The Infiniti G-series is a line of / produced by the division of for the 1991–1996 and 1999–present . The first two generations of the Infiniti G (P10 and P11) were based on the . Beginning with its third generation (V35), the Infiniti G have been of the line of and that were exported to the United States and Canada. The current incarnation is the fourth generation (V36) which introduced the hardtop coupe . The , on top of which the third and fourth generations (V35 and V36) of the Infiniti G have been built, also underpins the and has shared components with the , , and .
In May 2013, Infiniti announced a new naming convention beginning with the 2014 model year; all passenger cars are designated by the letter "Q," while sport-utility model names will begin with "QX." The Infiniti G was to have been replaced by the , but the G37 was revived as the Q40 beginning with the 2015 model year.
First generation (P10, 1991–1996)1991–1993 G20 1993.5 G20 1994–1996 G20t
The Infiniti G20 was 's entry-level luxury car in the United States from 1990 to 2002, with a two-year hiatus for model years 1997 and 1998, in which the became their entry-level car. It was a rebadged version of the sedan, primarily designed for the European market. It was launched in September 1990 as Infiniti's first small car as an entry-level alternative to the ; later advertisements in 1998 for the second-generation G20 emphasized its European heritage with the tag line "Born in Japan. Educated in Europe. Now Available in America." Two generations of the G20 exist in the United States, the HP10 (P10), built from 1990 to 1996, and the HP11 (P11), built from 1998 to 2002. All G20s were and were built in Oppama, Japan. The exterior and interior designs of the P10 were styled by Mamoru Aoki in 1987.
The G20 was first unveiled to Infiniti dealers at the 1989 (appearing to the public at the 1990 show), with the first series production example being assembled on July 10, 1990. The final 1996 G20 was rolled off the assembly line on July 19, 1996. The P10 featured the first application of Nissan's multi-link front suspension in a front-wheel-drive car, with an independent setup in the rear. It came standard with a 5-speed . The only options to begin with were an , leather interior, and a power glass ; a Touring package (labeled G20t) was introduced in 1994 and featured a black leather interior with sport front and fold-down rear seats, as well as a in the transmission and a on the rear decklid.
The G20 was powered by the . It was a mounted . Displacement was 2.0 litre (1998 cc) with a square (Bore × Stroke: 86.0 × 86.0 mm). This engine was also shared with the US-spec / SE-R, 2000, and a host of non-US Nissan vehicles. The particular version used in the G20 produced 140 hp (100 kW) crank in the US at first, and 145 hp (108 kW) in '00+ editions (116 to 126 ; stock range) and 132 lb⋅ft (179 N⋅m) or 136 lb⋅ft (184 N⋅m) (111 to 120 ; stock range). These engines were also fairly high-revving with a of 7500 rpm for 1991 through 1996 models, 6950 rpm for the 1999 model, and 6750 rpm for 2000-2002 models. Due to the SR20DE engine's flexibility, reliability, fuel economy and high power-handling capabilities, as well as a low buy-in cost, pre-owned NX2000, SE-R powered Sentras/200SXs and G20s have become popular and prominent in the "" or "" subculture.
There were three major variants of the SR20DE used in the G20. The first, used from July 1990 to December 1993, was the highport, in which the injectors and fuel rail were located above the intake plenum. In January 1994, due to tightening restrictions, Nissan switched to a lowport design, in which the and fuel rail switched places with the intake plenum. This design also featured a milder intake . (Switching it out for the highport intake cam is a popular upgrade to gain more power.) This design was used from 1994 to 1996 and again in 1998. In 1999 Nissan replaced the with a roller-rocker arm lifter design in place of the hydraulic rocker arm previously used, but kept the lowport intake design; many performance parts are not interchangeable between roller-rocker and highport/lowport engines, most notably camshafts.
The G20 featured either a 5-speed or an optional 4-speed automatic. Most front wheel drive transmissions from other SR-powered cars can be used with few modifications. The stock transmission as well as other SR20 transmissions are often upgraded with various modifications in order to handle more power. Common modifications include cryo treating, , transmission case , aftermarket , aftermarket , and upgraded . Common automatic transmission modifications include built valve bodies, aftermarket , (ATF) coolers, additional ATF filters, and aftermarket . Higher rated transmission swaps from front-wheel drive or powered cars such as the 2002–2006 have also been performed.
The G20 was a version of the Nissan Primera, but because Infiniti was pitched as a premium brand, it featured a high level of equipment compared to its European and Japanese relatives. The only engine available was the 2.0 litre ; in Europe this was the top-of-the-line engine for the Primera lineup. 5-speed manual and 4-speed automatic transmissions were both available, with the 5-speed being praised as "one of the best in the business." Power windows, power locks, power mirrors, air conditioning, four-wheel with , alloy wheels, a stereo, a , , floor mats, and a leather-wrapped steering wheel and gearshift knob were all standard. Heated mirrors, leather seats and a power moonroof were common options, and were later offered in a package that included power seats and . Later models also featured dual front airbags. The standard trim was called Luxury. Two major trim package upgrades were offered: Touring, badged G20t, available from model years 1994 to 1996 and 1999 to 2001, and Sport (with no badge modification) which was offered during model year 2002. These packages featured a limited-slip differential in the transmission, sportier, more highly bolstered front bucket seats and fold-down rear seats, all-black leather interior, fog lamps, and a spoiler on the rear decklid. The details of these trims varied from year to year.
P10 model refresh changes
Introduced at the 1993 New York Auto Show, the main changes for the P10 came as a midyear refresh in April 1993 (model year 1993.5), when dual replaced motorized , leather interiors came standard with power front seats, matte-black side moldings were replaced by body-colored ones, the was converted from to , the audio system was upgraded to six speakers with a CD player instead of the previously-standard cassette deck, and other new options such as remote were added. In February 1994, the 1994 model year was given a new larger grille and door handles, a lowport engine (replacing the original highport , in which the intake plenum is below the fuel injectors and fuel rail), a change in the vehicle's self-diagnostic system to -II, and larger 195/65R14 tires. The Touring models, introduced in February 1994, featured a limited-slip differential in the transmission; 195/65R14 Yokohama tires, sportier, more highly bolstered black leather front bucket seats and fold-down rear seats; ; and a spoiler on the rear decklid.
The G20 was temporarily discontinued after the 1996 model year, leaving the as Infiniti's lowest-priced car for the 1997 & 1998 model years.
Second generation (P11, 1999–2002)1999 Infiniti G20 Nissan Primera Camino is the Japanese equivalent of the Infiniti G20
The second-generation G20 underwent several changes, including adopting the rear suspension very similar to the 1995–1999 with a continued use of the independent multi-link strut front suspension of the P10 (similar to the and ). Despite enthusiasts' aversion to the beam, several publications praised the updated G20, as a technically good method of avoiding lateral suspension movement (which would compromise handling) while still offering a compliant ride. The P11 has a lateral grip figure of between 0.80 and 0.94g plus a 61/39 (61% front/39% rear). It grew in size, with a 2.7-inch (69 mm) length increase and 0.4-inch (10 mm) height increase over the P10, resulting in 1.4 inches (36 mm) more legroom for rear-seat passengers. The new model's increased size and luxury options, however, added to the car's weight (which rose to 3000 pounds); the stock 140-145 engine provided lower performance (the MY1999 automatic, for example, had a 10.9-second 0-60 mph time and did the quarter-mile in 18.4 seconds at 77 mph (124 km/h).
The first example of the second-generation G20 rolled off the Oppama assembly line on May 18, 1998, going on sale in July 1998 as a 1999 model. The final second-generation 2002 G20 was assembled on January 11, 2002 and the G20 slowly phased out during the first quarter of 2002, in being replaced by the 2003 model year rear-wheel drive G35 sports sedan. All models featured a higher level of standard equipment than the P10, including automatic on all but cloth-seat Luxury models, 15" 16-spoke , a higher-quality Bose radio/CD/cassette player standard, , standard power moonroof, and later, side-impact airbags. The Touring models continued to feature a limited-slip differential, but also had unique 12-spoke alloy wheels, and the upgraded sports seats were now available in beige leather and "sport cloth" (the latter as a factory-order option) in addition to the previously-offered black leather.
P11 model refresh changes
In late 1999, several noteworthy changes for the P11 came as a refresh in the 2000 model year, when the 145 variant of the SR20DE engine was implemented, newer automatic and manual transmission variations were introduced, anti-theft circuitry was added, anti-glare side mirrors became standard, and a remote trunk release was added to the keyless entry fob. In 2001, the G20t was dropped and a Sport model was introduced. In addition to the prior G20t's limited slip differential and decklid spoiler, this model featured two-tone leather/suede sport seats, 16" wheels, and a variety of minor cosmetic modifications. The 2002 base G20 received the 12-spoke Touring alloy wheels as standard.
End of production
The G20 was discontinued in favor of the rear wheel drive , a export version of the which was introduced in Japan in 2001. The G35 received significant praise from the automotive press and became a sales success for Infiniti despite being priced approximately US,000 above the G20's average of ,000. The G35, significantly larger and more powerful than the G20, was aimed more at the entry level premium- market instead of the G20's premium- market. The Nissan Primera was continued outside the United States as the slightly restyled and the significantly restyled markets with a final end to all production in 2006 as a 2007 model.
Third generation (V35, 2003–2007)Infiniti G35 sedan Infiniti G35 coupe
The third generation G (V35) was unveiled in June 2001 and released to North America for the 2003 , as the G35 in early 2002. It had little in common with the , and continued in the same tradition as the and the , which were also RWD models utilizing the same drivetrain as contemporary Nissan Zs. According to , CEO of , the letter G was chosen "for marketing purposes and its similarity in sound to the letter J", apparently in deference to the . Hiroshi Hasegawa designed both the sedan (frozen in 1998) and coupe (finalized in late 2000), with the former being previewed as the Nissan XVL Concept sports sedan in October 1999 at the Tokyo Motor Show and Infiniti XVL Concept in January 2000 at the NAIAS. Over 6 months prior to the Nissan XVL Concept introduction, in early April 1999 at the 1999 New York International Auto Show, Infiniti showcased a prototype of the V35 to journalists as part of an early preview of various other 2001 and 2002 model year Infiniti vehicles.
The G35 was based on the shared with the and . The FM platform stands for "front midship" design where the engine is moved back towards the rear of the engine bay which in turn improves the weight distribution. The G35 was 's for 2003 and has been well received by both the media and customers as a viable alternative to other luxury cars. The G35 was also nominated for the award that year and was on the for 2003 and 2004.
Sporting the ubiquitous engine, the Infiniti G35 uses a front-midship engine, layout ( is available for the G35x sedan) to achieve a 52% front/48% rear . Both body styles are available with either a 5-speed automatic or 6-speed , although the automatic is the only transmission available for the AWD sedan.
A 6-speed became available in 2003 as a 2004 model on the sedan (the coupe always had the option). For the 2003-04 model years, the produced 194 kW (264 PS; 260 hp) and 353 N⋅m (260 lb⋅ft) of torque in the sedan, 209 kW (284 PS; 280 hp) and 366 N⋅m (270 lb⋅ft) in the coupe. In the 2005 and 2006 model years (sedan, 2005-2007 for the coupe), those with automatic transmissions (both sedan and coupe) produced 209 kW (284 PS; 280 hp) and 366 N⋅m (270 lb⋅ft) of torque, while those with manual transmissions produced 222 kW (302 PS; 298 hp) and 350 N⋅m (258 lb⋅ft) of torque (again, both in sedan and coupe form). There is speculation that the output did not actually change, and that Infiniti was simply taking advantage of the outdated SAE standard of rating horsepower. However, manual transmission cars received a slightly different engine versus those fitted with automatics; manual cars had engines fitted with variable valve timing on both intake and exhaust camshafts, whereas automatic cars only have VVT on the intake side. The G35 is assembled in , Japan, and the first G35 was built on March 12, 2002 as a 2003 model.
The AWD model of the G35 sedan is called the G35x. Although the for the G35x is manufactured by , the AWD technology uses Nissan's proprietary AWD system. The system will make the car 100% rear wheel drive when driving at a steady speed. When the driver uses the throttle to accelerate from a stop or constant speed, the AWD system can send up to 50% of to the front wheels. When the car's speed becomes steady again, the drivetrain will return torque to the rear wheels. The AWD system will also transfer torque to the front wheels if the system detects loss of traction. This technology was first used in the 1989 , and has since been used in subsequent Skylines, and other vehicles in Japan and overseas, including the , and . There are few differences between the 2003 & 2004 G35 coupes. Both '03 & '04 six-speed manual models had the option of Brembo brakes and the Performance Tire and Wheel Package. On the 2005 coupes, three new colors, 'Athens Blue', 'Lakeshore Slate', and 'Serengeti Sand', replaced 'Twilight Blue', 'Caribbean Blue', and 'Desert Platinum' respectively; also, the Willow Cloth interior option was removed, and Stone leather became available.
2005 and 2006 refreshes2006 Infiniti G35 coupe 2006 Infiniti G35 sedan
The G35 sedan was refreshed inside and out for the 2005 model year and the coupe for the 2005 and 2006 model years. The interior was given sportier gauges with better backlighting and higher quality trim and knobs. Genuine aluminum trim replaces "tinted" interior trim, and the dash and center console layout were revised. Rosewood trim becomes available as a package on the 2005 models. MP3/WMA playback was added to the now standard 6 disc in-dash CD player, and the cassette player was removed. brakes were removed for the 2005 and 2006 models, and the brakes were redesigned with larger discs and a different caliper design. This was partly in response to a number of complaints about the previous years' brakes, which included a class action lawsuit filed in California related to premature wear on 2003–2004 models. A sport-tuned suspension package was standard on all six-speed manual equipped models, which included a viscous and the higher output "Rev-UP" engine. The 2006 models received minor updates. On the exterior there were new headlights, taillights, spoiler, sport side sills, and front bumper. capability was added to the interior for hands-free phone use. was an option for the '06 coupe.
Fourth generation (V36, 2007–2015)
The five-year development program for the V36 began in 2002, with conclusion in 2006 for the sedan and 2007 for the coupe. Design work started in 2003 and continued into 2004, when Hideo Komuro's design was chosen for the sedan. The coupe design process was later completed in the first half of 2005, with a conceptual variant being readied for public introduction. The redesigned G sedan and coupe were introduced for the 2007 and 2008 model years, respectively. The fourth generation G sedan was launched in November 2006 as a 2007 model with a heavily revised 3.5 L engine and a 5-speed automatic as the standard transmission, a 6-speed manual was also available. The redesigned second generation G coupe launched in August 2007 as a 2008 model with a larger 3.7 L , the first engine to feature . It too came with either a 5-speed automatic or 6-speed manual. All manual G models include a sport package. The 2009 G37 convertible was launched in June 2009. The 2009 model G sedan followed suit using the same VQ37VHR engine. Also for 2009 the 5-speed automatic was replaced with an all-new 7-speed and both the sedan and coupe gained a self-healing paint finish from the . The V36 platform continued for 2010 with numerous interior changes and upgrades as well as a mid-product cycle exterior update for the sedan. In late 2010 the Infiniti G25 went on sale as a 2011 model, featuring a smaller 2.5L version of the VQVHR engine to allow the G to better compete with the and .
Pre facelift models
2007–2008 G35 Sedan
The G35 sedan underwent a major revision for the 2007 model year. This 2nd generation front-mid (FM) platform underpinning the new G is shared in part with the Infiniti M and has several structural reinforcements around the engine and rear floor area, along with three times more laser welding and 16 percent more spot welds than the old version; overall body stiffness was improved by 40 percent. Single-pivot lower control arms in front replace the 1st gen model's twin lower links. The G35x sedan uses an E-TS all-wheel drive system.
Along with these chassis refinements, Sport package equipped models came with firmer rear shocks, bigger front brake calipers, and larger 13-inch (330 mm) rotors all around (up from 12.6/12.1-inch front/rear). Sport package equipped cars also get a viscous . An all-new package can be ordered for sport package equipped models. It features a planetary gearset on the steering shaft (similar to BMW), that varies the steering ratio between 12.0:1 and 18.5:1. A rear-wheel steering system that induces up to one degree of rear steer is also included in this package. The Active Steering package includes even stiffer shocks than the sport package at all four corners and the ride has been repeatedly reported as being too stiff for most customers except the most "enthusiastic" drivers. Base and Journey model 17 inch wheels were fitted with wider 225 section tires (up from 215), while the 18 inch wheel upgrade (included in sport or wheel package) with 225/50-ZR18 front and 245/45-ZR18 rear is now a size smaller in front and larger in back than the 1st gen model's all-around 235/45R18s.
The updated is more powerful (306 hp (228 kW) at 6,800 rpm and 268 lb⋅ft (363 N⋅m) at 4,800 rpm), more fuel efficient, and more responsive than the previous . The "HR" stands for "High Revolution" or "High Response". A dual-path intake (two air cleaners, throttle bodies, etc.) lowers intake tract restriction by 18 percent and new equal-length exhaust manifolds lead into mufflers that are 25 percent freer flowing. The intake is said to benefit from a ram-air effect adding three horsepower at 60 mph. Electrically actuated is new on the exhaust cams which broadens the torque curve. The new engine block maintains the same bore and stroke, but the connecting rods were lengthened and the block deck was raised by 8.4 mm to reduce piston side-loads. 80% of the internal components have been strengthened or redesigned to handle the increased 7,500 rpm red line, along with the use of larger crank bearings with main bearing caps reinforced by a rigid ladder-type main cap girdle. With an increase in compression ratio from 10.3:1 to 10.6:1 these changes add 26 more horsepower. Torque is down 2 pound force-feet (2.7 N⋅m) from the old DE engine (268 vs. 270). The engine now sits 15 mm lower in the chassis for a lower center of gravity.
Although the horsepower rating increases only 8 hp compared to the latest version of the previous "DE" engine, the real horsepower difference was much greater due to Nissan adopting the 2006 SAE hp measurement guidelines for horsepower ratings in 2007. According to Consumer Reports an Infiniti G35 Journey sedan with a 5-speed Automatic transmission can reach 0–60 mph (0–97 km/h) in 5.4 seconds, and the 1/4-mile (400 m) 13.8 seconds. According to the also newly revised EPA guidelines, fuel economy is estimated at 17 mpg‑US (14 L/100 km; 20 mpg‑imp) in the city and 24 mpg‑US (9.8 L/100 km; 29 mpg‑imp) on the highway. Fuel economy is virtually identical between generations, with the second generation earning a 1-mile-per-US-gallon (0.43 km/L; 1.2 mpg‑imp) edge in highway driving (both measured using EPA 2008 guidelines).
Second generation G35 performance: According to and , a previous model 2005 G35 6MT sedan reached 0-60 mph in 5.7 seconds and the 1/4-mile in 14.1 seconds. This gives the new 2nd gen G35 V36 sedan a solid 0.4 and 0.3 second performance advantage respectively. 5-speed automatics are on par with manual transmission cars from a performance perspective. In a 2008 with the new 2008 Cadillac CTS a 5-speed automatic transmission equipped G35 sedan achieved a 0-60 time of 5.3 seconds, a 0-100 time of 13.1 seconds and a 1/4-mile time of 13.8 seconds at 102.9 mph (165.6 km/h). Generally a V36 G35 reaches 60 mph in the low 5 second range; 100 mph in around 13 seconds and runs the quarter-mile in about 13.8 seconds. The 200 lb heavier all wheel drive versions are only approximately 0.3 seconds behind in each of these measurements.
Models (including the since 2009 G37):
- G35/G37 - 3.5/3.7 L , 306 hp (228 kW) / 328 hp (245 kW),
- G35/G37 Journey - 3.5/3.7 L , 306 hp (228 kW) / 328 hp (245 kW), weight 3,628 lb (1,646 kg)
- G35x/G37x AWD - 3.5/3.7 L , 306 hp (228 kW) / 328 hp (245 kW) , weight 3,882 lb (1,761 kg)
- G35/G37 Sport 6MT - 3.5/3.7 L , 306 hp (228 kW) / 328 hp (245 kW), weight 3,709 lb (1,682 kg)
- G37 Convertible - 3.7 L , 325 hp (242 kW), weight 4,083 lb (1,852 kg)
- G37 Convertible Sport 6MT - 3.7 L , 325 hp (242 kW), weight 4,149 lb (1,882 kg)
In addition, a special edition of the G37 was entered into the Awards in 2008.
Infiniti Coupe Concept (2006)
Developed from mid-2005 to November 2005, it was a concept vehicle that previewed the design of the V36-based G coupe. It included a full-length glass panel roof, modulated front fenders and hood, deep front spoiler and large projector headlights, polished bare metal-look paint, compact camera outside rearview mirrors, hidden door handles and large 20-inch, 9-spoke painted aluminum-alloy wheels.
The vehicle was unveiled in 2006 North American International Auto Show.
2008 G37 CoupeInfiniti G37 S coupe (Europe)
In 2007, the redesigned G coupe was unveiled at the 2007 and was available for sale as a 2008 model. Unlike the 2007 and 2008 G sedan it was given the new 3.7 L 330 hp (250 kW) engine but for this one model year still paired with the 5-speed automatic transmission and was named the "G37." In Japan, the G37 joined the updated G Sedan under the (V36) nameplate. This also marks the first use of 's VVEL () system on a production vehicle in the US market.
2009-2013 G37 Sedan and CoupeG35/37 transmission gear ratios.
For the 2009 model the G35 sedan was replaced by the G37 sedan. The G37 sedan was first unveiled at the for the European market. Exterior, interior and options remain identical to the 2008 G35 model range but the sedan now also sports the 3.7-liter VQ37VHR "VVEL" V6, rated 328 hp (245 kW) at 7,000 rpm and 269 lb⋅ft (365 N⋅m) at 5,200 rpm that was previously introduced in the G37 Coupe. Although the engine gains only 0.2 kg⋅m (2 N⋅m; 1 lb⋅ft) torque over the VQ35HR and this torque value arrives at a later 5,200 rpm vs. 4,800 in the VQ35HR, the torque curve itself is improved and flattened across the rpm range via 's new VVEL () variable valve timing resulting in better throttle response and low rpm torque. The G37s VQ37VHR engine has been touted by car magazines and reviewers as an improvement over the VQ35HR engine mostly adding much more refinement and smoother engine operation, especially at high rpm where the VQ35HR engine was frequently criticized for and sounding strained, harsh and loud. The often criticized too aggressive clutch engagement, notchiness of the 6-speed manual in the G35 and engine vibrations transferred through the shifter and pedals in the G35 6MT cars was also addressed in the new G37 models.The 2009 Infiniti G37 Anniversary Art Project Vehicle
All 2009 models came standard with Infiniti's new seven-speed that was also introduced on the 2009 FX35 and FX50, updated from the previous five-speed transmission. The G37 Sedan or Coupe could be equipped with a six-speed by specifying the Sport 6MT model. The Base, Journey and X models could not be ordered with manual transmissions, however the Sport Package included all sport options of the 6MT model (excluding the manual transmission and the hand lever parking brake), and was available for the Journey and X models.
The 2009 sport package (standard on Sport 6MT cars, optional on Journey and X models) now also included larger sport brakes with 4-piston front/2-piston rear calipers with 14-inch (360 mm) ventilated front rotors and 13.8-inch (350 mm) ventilated rear rotors, a new sport wheel design 18-inch (460 mm) for the Sedan and 19-inch (480 mm) on the Coupe, and Viscous Limited-Slip Differential (VLSD). The Sport Package on G37 x AWD Sedans does not include the larger opposed piston brakes, nor does it include the more aggressive steering rack, VLSD, or sport tuned suspension (the same package for AWD Coupes includes everything from the RWD version, save the more aggressive steering rack). Brakes on non-Sport models are front 13-inch (330 mm) ventilated discs and rear 13-inch (330 mm) ventilated discs with sliding calipers. The G37 is available as G37, G37 Journey, G37S 6MT and G37x AWD models. Major option packages remain to be the Premium Package, Sport Package, Nav Package, Tech Package. All 2009 models come standard with self healing "Scratch Shield" paint which employs a soft polymer top coat that can self heal small scratches and swirl marks.
Even though the final drive ratio for vehicles equipped with the 7-speed automatic has been (numerically) reduced from 3.69 to 3.36, the new 7-speed automatic has much lower first through fourth gear overall ratios than the old 5-speed automatic and the 6-speed manual in the 6MT cars (which retain the old 3.69 final drive ratio). Giving it closer gear ratios in all gears, to match engine rpm better with power demand, brings better acceleration while overdrive ratios in 6th and 7th gears reduces highway cruising rpm and improves fuel mileage. The new 7-speed automatic retains the Drive Sport (DS) shift mode and Downshift Rev Matching (DRM) feature of the previous 5-speed automatic. Paddle shifters are standard on G37S models equipped with the 7-speed automatic. The new engine/transmission combo did add some weight the car (3,590 lb. for the G37 vs. 3,508 for the G35 in identical trim).
G37x Coupe uses an E-TS all-wheel drive system.
G37 coupe and sedan were set on sale in September 2008 as 2009 models.
G37x Coupe and G37 sedan were unveiled in 58th annual . Pictures of G37 convertible was first shown in Monterey, while the vehicle itself would be unveiled in 2008 in November.
The 2009 Infiniti G37 Anniversary Art Project Vehicle - This is a version of G37 Sport Coupe inspired by to commemorate Infiniti's 20th anniversary. The vehicle was designed by Montreal artist Heidi Taillefer. The vehicle was set on tour at various Cirque du Soleil shows and other events, with eventual vehicle sale at charity auction.
2009-2013 G37 ConvertibleInfiniti G37 convertible Infiniti G37 cabrio
G37 Convertible was introduced in June 2009  as a 2009 model on the V36 FM platform and is only from a design perspective based on the G Coupe.
The G Convertible came equipped with a standard 325 horsepower (242 kW) 3.7-liter V6, backed by a choice of a 7-speed automatic transmission with available magnesium paddle shifters or a responsive close-ratio 6-speed manual transmission. The G Convertible has a curb weight of 4,149 lb (1,882 kg).
FaceliftThe facelift model 2011 G37 Convertible (US) 2010-2011 Infiniti G37 sedan (Germany)
From November 2009, a facelift for the 2010 model year G Sedan commenced production and went on sale in January 2010. Changes include a revised fascia with fog lamps moved from the head light cluster to the more traditional separate housings, a new grill for the sedan mimicking the one from the coupe, a new optional navigation system for both the coupe and sedan (revised from the optional system available with the 2008 and 2009 G37s). Other minor changes included new interior colors, trim, and lighting design for the dash and center display. Several items that were options on the 2008 and 2009 models became standard on the 2010 G37s.
In a March 2010 comparison test by Car and Driver, the Infiniti G37 Convertible came in third place out of four cars in a convertible comparison behind the and .2010 model year refresh brought in revised headlight shape, along with a grille more similar to that of the coupe variant.
In July 2010, the Coupe and Convertible received a refresh for the 2011 model year.
2011-2012 Infiniti G25
Infiniti debuted the G25 sedan at the 2010 . The G25 was powered by a 2.5 L V6 producing 218 hp (163 kW) and 187 lb⋅ft (254 N⋅m) of torque. In a Motor Trend 2012 comparison the Infiniti accelerated from 0-60 in 7.5 seconds, over 2 seconds slower than its bigger brother, the G37. The G25's JDM relative, the which features the same engine, had been on sale for several years already.
Priced lower than the G37, the G25 was aimed to compete with entry-level luxury rivals such as the 250, Audi A4 and . Compared to the G37, other than a smaller engine and fewer options (no six-speed manual transmission available, no Navigation, no Premium or Technology packages in the U.S. market), the G25 was otherwise identical and features a choice of rear-wheel drive or all-wheel drive.2011 Infiniti G37 Coupe IPL
In 2012, the G25 was discontinued in the United States.
Infiniti Performance Line (IPL)
In July 2010 Infiniti released its new performance division, (IPL). The debut IPL offering is the G37 Coupe for 2011 model year, and later the G37 Convertible. The IPL models featured a retuned engine producing 348 hp (353 PS; 260 kW) @ 7400 rpm and 276 lb⋅ft (374 N⋅m) @ 5200 rpm of . Performance improvements included a redesigned exhaust system, sportier suspension tuning, as well as a more direct steering feel. Design changes were made to the exterior including more aggressive front/rear bumpers and sideskirts, sportier 19 inch alloy wheels, and larger exhaust tips. Inside, the G37 IPL has red Monaco leather seats. The IPL G37 Coupe and Convertible are only available in 2 colours; Graphite Shadow gray metallic and Malbec Black. Like the regular models, the G37 IPL was also renamed Q60 IPL beginning 2014 model year.2013 Infiniti G37 Convertible IPL
The Infiniti G sedan was renamed to Q40 for the production period between June 2014 and June 2015. This was due to the creation of and gradual implementation of the new nomenclature from September 2012 through 2014. The G/Q40 sedan went largely unchanged for its final year and final production run in 2015.
For the 2014 model year, the all new Q50 sedan was sold alongside the fourth generation G/Q40, marketing the Q40 as a lower cost option. The Q50 sedan was code-named "V37" and made its debut at the 2013 (NAIAS).
The Infiniti Q60 is the coupe and convertible replacement for the Infiniti G37 coupe and convertible, and was released in July 2013.
Specifications1990–1996 1998–2002 2002–2004 2004–2006 2006–2007 2007–2008 2008–2009 2009–2010 2010–2015 Generation P10 P11 V35 V36 (sedan) V36 V35 (coupe) Powertrain Engine 2.0 L (120 cu in)
140 bhp (100 kW)
132 lb⋅ft (179 N⋅m) 2.0 L (120 cu in)
145 bhp (108 kW)
136 lb⋅ft (184 N⋅m) I4 3.5 L (210 cu in)
260 bhp (190 kW)
260 lb⋅ft (350 N⋅m)
280 bhp (210 kW)
270 lb⋅ft (370 N⋅m) 3.5 L (210 cu in)
298 bhp (222 kW)
258 lb⋅ft (350 N⋅m)
280 bhp (210 kW)
270 lb⋅ft (370 N⋅m)V6 Sedan:
306 bhp (228 kW)
268 lb⋅ft (363 N⋅m) V6 Sedan:
3.7 L 328 hp (245 kW) 269 lb⋅ft (365 N⋅m) V6 Coupe:
298 bhp (222 kW)
270 lb⋅ft (370 N⋅m) V6 Coupe:
3.7 L 330 hp (250 kW) 270 lb⋅ft (370 N⋅m) V6 Transmission 5-speed Manual, 4-speed Automatic 6-speed Manual, 5-speed Automatic 6-, 7- Dimensions Curb Weight 2,535 lb (1,150 kg)-2,818 lb (1,278 kg)
(depending on options) 2,913 lb (1,321 kg)-2,981 lb (1,352 kg)
(depending on options)
3,416 lb (1,549 kg)-3,422 lb (1,552 kg)
3,435 lb (1,558 kg)
3,336 lb (1,513 kg)-3,677 lb (1,668 kg)(AWD)
3,505 lb (1,590 kg)
3,524 lb (1,598 kg)
3,449 lb (1,564 kg)-3,650 lb (1,660 kg)(AWD) Coupe:
3,710 lb (1,680 kg)
3,701 lb (1,679 kg)
4,149 lb (1,882 kg)
Wheelbase 100.4 in (2,550 mm) 102.4 in (2,600 mm) 112.2 in (2,850 mm) Length 174.8 in (4,440 mm) 177.5 in (4,510 mm) Sedan: 186.5 in (4,740 mm) Sedan: 187.0 in (4,750 mm) Coupe: 182.2 in (4,630 mm) Coupe: 183.1 in (4,650 mm) Width 66.7 in (1,690 mm) Sedan: 69.0 in (1,750 mm) Sedan: 69.8 in (1,770 mm) Coupe: 71.5 in (1,820 mm) Coupe: 71.8 in (1,820 mm) Height 54.7 in (1,390 mm) 55.1 in (1,400 mm) Sedan: 0 in (0 mm) Sedan: 0 in (0 mm) Coupe: 0 in (0 mm) Coupe: 0 in (0 mm)
The current generation of the G features standard dual , front and rear , and front . It was rated "Good" for each the "Front Offset" and the "Side Impact" crash tests while rated "Acceptable" for "Roof Strength" by the (IIHS). However, an IIHS Statusate.
Awards and recognition
The G has earned many automotive awards over its lifespan:
- : 1991 (April & September) High marks for suspension and value.
- : 1993 “Best Overall Import Car Value Over ,000” and “Best Value in Compact Class Over ,000.”
- : 1996 Top Score in Customer Satisfaction Index.
- : 1997 Second Highest Scorer in Customer Satisfaction Index.
- : 1999 G20 and G20t “A Best Overall Value - Compact Sedan Over ,000.”
- First Place: Top 10 Cars (upscale sedan category) for 2007 and 2008
- : Rated One of the Top 10 Best Handling Cars in the World (P11)
- "10 Best Cars" list: 2003, 2004, 2007, and 2009.
- Nominated for the 2003 .
- 2003 Car of the Year
- Best of 2006 Awards: Best Japanese Car
U.S. sales by calendar year1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 — 13,929 14,592 16,545 17,248 16,818 13,467 — 7,217 16,108 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 13,095 11,513 40,535 64,730 71,177 68,728 60,471 71,809 64,181 87,546 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 58,143 58,246 59,844 57,878 15,590 8,605 59 — — —
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- . G20.net. 2007.
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- Coleman, Dave (1998). (November 1998 ed.). Sport Compact Car.
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- September 15, 2012, at the . Insurance Institute for Highway Safety, Status Report, Vol. 42, No. 4, April 19, 2007.
- . Concept Carz. 2004.
- . Nissan & Infiniti News Bureau. 1996.
- . Nissan & Infiniti News Bureau. 1999.
- . Car and Driver. Retrieved October 10, 2010.
- 2010 G: