The Infiniti G37 Sedan, produced from September 2008 through November 2009, represented the high-performance variant of the V36 generation of Infiniti’s G-series. Positioned as the flagship sedan, it replaced the G35 and introduced a significant leap in power and refinement. This particular configuration – the 3.7-liter V6 engine producing 328 horsepower paired with an all-wheel-drive system and a seven-speed automatic transmission – was a key offering in the G37 lineup, aimed at buyers seeking a blend of luxury, performance, and all-weather capability. The G37 Sedan competed directly with established luxury sport sedans like the BMW 3-Series, Lexus IS, and Acura TL.
Technical Specifications
| Brand | Infiniti |
| Model | G |
| Generation | G37 Sedan (V36) |
| Type (Engine) | 3.7 V6 (328 Hp) AWD Automatic |
| Start of production | September, 2008 |
| End of production | November, 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (EPA) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 9.4 l/100 km (25 US mpg, 30.1 UK mpg, 10.6 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Emission standard | LEV2 |
| Weight-to-power ratio | 5.2 kg/Hp, 190.7 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 212.2 Nm/tonne |
| Power | 328 Hp @ 7000 rpm |
| Power per litre | 88.7 Hp/l |
| Torque | 365 Nm @ 5200 rpm (269.21 lb.-ft. @ 5200 rpm) |
| Maximum engine speed | 7600 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | VQ37VHR |
| Engine displacement | 3696 cm3 (225.54 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 95.5 mm (3.76 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, CVTCS, VVEL |
| Engine oil capacity | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2198 kg (4845.76 lbs.) |
| Max load | 478 kg (1053.81 lbs.) |
| Trunk (boot) space – minimum | 382 l (13.49 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4755 mm (187.2 in.) |
| Width | 1773 mm (69.8 in.) |
| Height | 1469 mm (57.83 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1520 mm (59.84 in.) |
| Rear (Back) track | 1530 mm (60.24 in.) |
| Ride height (ground clearance) | 124-130 mm (4.88 – 5.12 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11 m (36.09 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 320×28 mm |
| Rear brakes | Ventilated discs, 308×16 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/55 R17; 225/50 R18 |
| Wheel rims size | 7.5J x 17; 7.5J x 18 |
Powertrain & Engine Architecture
The heart of the G37 Sedan AWD Automatic is the VQ37VHR 3.7-liter V6 engine. This engine is a naturally aspirated powerplant, representing a significant evolution of Nissan/Infiniti’s venerable VQ series. The “VHR” designation stands for “Variable Valve Timing and Lift,” indicating the engine’s advanced valvetrain technology. It utilizes Continuously Variable Valve Timing Control System (CVTCS) on both intake and exhaust valves, coupled with Variable Valve Event and Lift (VVEL) on the intake side. This combination allows for precise control over valve timing and lift, optimizing performance and fuel efficiency across the engine’s operating range. The engine employs multi-port fuel injection and boasts a compression ratio of 11:1. The seven-speed automatic transmission, sourced from Aisin, was specifically tuned to handle the engine’s substantial power output and provide smooth, responsive shifts. The all-wheel-drive system utilizes a rear-biased configuration, sending most of the power to the rear wheels under normal driving conditions and engaging the front wheels as needed for enhanced traction.
Driving Characteristics
The G37 Sedan AWD Automatic delivers a compelling driving experience. The 328 horsepower and 269 lb-ft of torque provide brisk acceleration, with 0-60 mph times typically around 5.5 seconds. While not as overtly sporty as the six-speed manual version, the seven-speed automatic offers quick and seamless gear changes, particularly in Sport mode. The AWD system provides excellent grip and stability, especially in inclement weather. Compared to the G35, the G37 offers a noticeable improvement in power and responsiveness. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as the manual. The gear ratios are optimized for a balance of acceleration and fuel economy, but some drivers may find the transmission occasionally hesitant during kickdown maneuvers.
Equipment & Trim Levels
The G37 Sedan AWD Automatic typically came well-equipped with standard features including leather upholstery, power-adjustable front seats, a premium Bose audio system, automatic climate control, and a navigation system. Optional extras included a power moonroof, heated front seats, and advanced safety features like lane departure warning and intelligent cruise control. The interior design was focused on a driver-centric layout with a sporty aesthetic. Trim levels were relatively straightforward, with the AWD Automatic representing a mid-to-high-range offering within the G37 lineup.
Chassis & Braking
The G37 Sedan features a robust chassis with a double-wishbone front suspension and an independent multi-link rear suspension. Stabilizer bars are fitted to both axles to reduce body roll during cornering. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The front brakes measure 320x28mm, while the rear brakes are 308x16mm. An Anti-lock Braking System (ABS) is standard. The steering is a rack-and-pinion system with hydraulic power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The Infiniti G37 Sedan was generally well-received by automotive critics. It was praised for its powerful engine, refined interior, and engaging driving dynamics. The AWD system was a significant selling point for buyers in regions with harsh winters. Fuel economy, however, was a common criticism, with the G37 achieving around 18 mpg in the city and 25 mpg on the highway. Compared to the rear-wheel-drive G37, the AWD version experienced a slight weight penalty, which marginally impacted performance. The G37 offered a compelling alternative to its European and Japanese rivals, often at a more competitive price point.
Legacy
The VQ37VHR engine has proven to be a durable and reliable powerplant, with many G37 Sedans exceeding 150,000 miles with proper maintenance. The seven-speed automatic transmission is also generally considered reliable. However, like any vehicle, regular maintenance is crucial to ensure longevity. On the used car market, the G37 Sedan AWD Automatic remains a popular choice for buyers seeking a sporty and luxurious sedan at an affordable price. Its combination of performance, features, and all-weather capability continues to make it a desirable option.
