The Infiniti FX37, specifically the facelifted 2011-2013 model year equipped with the 3.7-liter V6 engine producing 325 horsepower and paired with a seven-speed automatic transmission and ATTESA E-TS all-wheel drive, represents a significant iteration of Infiniti’s mid-size luxury crossover. Introduced as a 2012 model, this variant aimed to blend performance, luxury, and practicality within the increasingly competitive crossover segment. It built upon the foundation of the first-generation FX (introduced in 2003) and offered a more refined driving experience and updated styling. The FX series, marketed as a “crossover SUV,” sought to appeal to buyers desiring a sportier alternative to traditional luxury SUVs.
Technical Specifications
| Brand | Infiniti |
| Model | FX |
| Generation | FX II (facelift 2011) |
| Type (Engine) | 37 V6 (325 Hp) ATTESA E-TS AWD Automatic |
| Start of production | 2012 |
| End of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Crossover |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (EPA) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 6 kg/Hp, 165.8 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 184.7 Nm/tonne |
| Power | 325 Hp @ 7000 rpm |
| Power per litre | 87.9 Hp/l |
| Torque | 362 Nm @ 5200 rpm (267 lb.-ft. @ 5200 rpm) |
| Maximum engine speed | 7500 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, VVEL |
| Engine oil capacity | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Coolant | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1960 kg (4321.06 lbs.) |
| Max. weight | 2503 kg (5518.17 lbs.) |
| Max load | 543 kg (1197.11 lbs.) |
| Trunk (boot) space – minimum | 702 l (24.79 cu. ft.) |
| Trunk (boot) space – maximum | 1756 l (62.01 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Max. roof load | 45 kg (99.21 lbs.) |
| Permitted trailer load with brakes (12%) | 907 kg (1999.59 lbs.) |
| Permitted trailer load without brakes | 454 kg (1000.9 lbs.) |
| Permitted towbar download | 91 kg (200.62 lbs.) |
| Length | 4860 mm (191.34 in.) |
| Width | 1925 mm (75.79 in.) |
| Height | 1680 mm (66.14 in.) |
| Wheelbase | 2885 mm (113.58 in.) |
| Front track | 1635 mm (64.37 in.) |
| Rear (Back) track | 1640 mm (64.57 in.) |
| Ride height (ground clearance) | 187 mm (7.36 in.) |
| Drag coefficient (Cd) | 0.35 |
| Minimum turning circle (turning diameter) | 11.2 m (36.75 ft.) |
| Approach angle | 28.8° |
| Departure angle | 20.9° |
| 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 | Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 320×33 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 | 265/60 R18; 265/50 R20 |
| Wheel rims size | 8J x 18; 8J x 20 |
Powertrain & Engine Architecture
The heart of the FX37 is the VQ37VHR 3.7-liter V6 engine. This engine is a member of Nissan/Infiniti’s highly regarded VQ engine family, known for its smooth operation and reliability. The “VHR” designation signifies Variable Valve Event and Lift, a system that continuously adjusts valve timing and lift to optimize performance and efficiency across the rev range. The engine utilizes multi-port fuel injection and a compression ratio of 11:1. The seven-speed automatic transmission, sourced from Jatco, was specifically tuned to complement the engine’s power delivery. This transmission featured adaptive shift control, adjusting shift points based on driving conditions and driver input. The ATTESA E-TS (Advanced Total Traction Engineering System for All-Terrain) all-wheel-drive system is a key component, providing a rear-wheel-drive bias for sporty handling, while seamlessly engaging the front wheels when traction is needed.
Driving Characteristics
The FX37 Automatic offered a comfortable yet engaging driving experience. While not as overtly sporty as some competitors, the 325 horsepower and 267 lb-ft of torque provided ample power for everyday driving and confident passing maneuvers. The seven-speed automatic transmission generally shifted smoothly, although some reviewers noted a slight hesitation during quick downshifts. The ATTESA E-TS system contributed to stable handling and enhanced grip in various weather conditions. Compared to the FX35 (with its 3.5-liter V6), the FX37 offered a noticeable increase in power and torque. The FX37 was also quicker than the diesel options available in some international markets. However, it didn’t possess the raw acceleration of the higher-performance FX50, which featured a 5.0-liter V8 engine.
Equipment & Trim Levels
The FX37 typically came well-equipped with standard features including leather upholstery, power-adjustable front seats, a rearview camera, a premium audio system, and automatic climate control. Available options included a navigation system, a panoramic sunroof, adaptive cruise control, lane departure warning, and blind-spot monitoring. Trim levels were relatively straightforward, with most FX37s being equipped with a similar core set of features. The focus was on providing a luxurious and technologically advanced experience, with a strong emphasis on driver and passenger comfort.
Chassis & Braking
The FX37 utilized a robust chassis with a double-wishbone front suspension and an independent multi-link rear suspension. Stabilizer bars were fitted at both ends to minimize body roll during cornering. Braking duties were handled by ventilated discs on all four wheels, with ABS standard. The braking system provided ample stopping power for the vehicle’s weight and performance capabilities. The suspension tuning aimed for a balance between ride comfort and handling precision.
Market Reception & Comparison
The Infiniti FX37 was generally well-received by automotive critics, who praised its stylish design, comfortable interior, and strong performance. However, some reviewers noted its relatively high fuel consumption and somewhat firm ride quality. Compared to rivals like the BMW X5, Mercedes-Benz ML-Class, and Acura MDX, the FX37 offered a unique blend of sportiness and luxury at a competitive price point. Fuel economy was a common criticism, with the FX37 achieving around 16 mpg in the city and 22 mpg on the highway. Reliability was generally considered good, although some owners reported minor issues with the infotainment system.
Legacy
The Infiniti FX37, and the FX series as a whole, played a significant role in establishing Infiniti as a credible player in the luxury crossover segment. The VQ37VHR engine proved to be a durable and reliable powerplant, and the ATTESA E-TS all-wheel-drive system provided confident all-weather performance. On the used car market, the FX37 remains a popular choice for buyers seeking a stylish and well-equipped crossover with a sporty driving experience. While maintenance costs can be higher than some competitors due to the vehicle’s complexity and luxury features, the FX37’s overall reliability and strong resale value make it a compelling option.
