The Infiniti Q70 (facelift, introduced in 2014) with the 3.7-liter V6 engine and all-wheel drive automatic transmission represents a significant iteration of Infiniti’s mid-size luxury sedan. Produced from 2014 through 2018, this variant aimed to blend performance, comfort, and advanced technology within the competitive luxury segment. It served as a flagship sedan for the brand, positioned above the Q50 and offering a more spacious and refined experience. This particular configuration, combining the potent VQ37VHR engine with a seven-speed automatic and all-wheel drive, was a key offering in the Q70 lineup, appealing to buyers seeking a balance of capability and luxury.
Technical Specifications
| Brand | Infiniti |
| Model | Q70 |
| Generation | Q70 (facelift 2014) |
| Type (Engine) | 3.7 V6 (330 Hp) AWD Automatic |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (extra urban) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.6 kg/Hp, 179.3 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 198.9 Nm/tonne |
| Power | 330 Hp @ 7000 rpm |
| Power per litre | 89.3 Hp/l |
| Torque | 366 Nm @ 5200 rpm (269.95 lb.-ft. @ 5200 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 | 8.7 l (9.19 US qt | 7.65 UK qt) |
| Kerb Weight | 1840 kg (4056.51 lbs.) |
| Trunk (boot) space (minimum) | 422 l (14.9 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4981 mm (196.1 in.) |
| Width | 1844 mm (72.6 in.) |
| Height | 1514 mm (59.61 in.) |
| Wheelbase | 2901 mm (114.21 in.) |
| Front track | 1575 mm (62.01 in.) |
| Rear (Back) track | 1570 mm (61.81 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.4 m (37.4 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission ASC |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/50 R18 |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
At the heart of the 2014-2018 Infiniti Q70 3.7 AWD lies the VQ37VHR 3.7-liter V6 engine. This engine is a member of Nissan’s highly regarded VQ engine family, known for its smooth operation, reliability, and strong performance. The “VHR” designation stands for “Variable Valve Event and Lift,” indicating the engine’s advanced valvetrain technology. This system continuously adjusts valve timing and lift on both the intake and exhaust sides, optimizing engine performance across the rev range. The engine utilizes multi-port fuel injection and a naturally aspirated design, delivering 330 horsepower at 7000 rpm and 269.95 lb-ft of torque at 5200 rpm. The engine is mounted longitudinally in the front of the vehicle. The seven-speed automatic transmission, designated ASC (Advanced Shift Control), provides smooth and responsive gear changes. The all-wheel-drive system employs a rear-biased distribution, enhancing handling and stability, particularly in adverse weather conditions.
Driving Characteristics
The Q70 3.7 AWD offers a comfortable and refined driving experience. While not overtly sporty, the 330-hp V6 provides ample power for confident acceleration and highway cruising. The seven-speed automatic transmission is well-tuned, offering quick shifts and a seamless driving experience. Compared to the base 3.5-liter V6 model, the 3.7-liter engine delivers noticeably stronger acceleration. The all-wheel-drive system provides enhanced traction and stability, especially in inclement weather, making it a more secure option than rear-wheel-drive variants. The gear ratios are optimized for a balance of acceleration and fuel efficiency, with a focus on providing smooth power delivery in everyday driving situations. It doesn’t possess the sharp handling characteristics of some European competitors, but it prioritizes ride comfort and isolation from road imperfections.
Equipment & Trim Levels
The Q70 3.7 AWD typically came well-equipped with standard features including leather upholstery, power-adjustable front seats, a rearview camera, a premium audio system, and dual-zone automatic climate control. Higher trim levels, such as the Premium and Signature Editions, added features like a navigation system, upgraded leather, wood trim, a power rear sunshade, and advanced safety technologies like lane departure warning and intelligent cruise control. Optional extras included a Bose premium audio system, a rear-seat entertainment system, and various appearance packages. The interior design focused on luxury and comfort, with a spacious cabin and high-quality materials.
Chassis & Braking
The Q70 utilizes a double wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. A stabilizer bar is included on both axles to reduce body roll during cornering. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The Q70 is equipped with an Anti-lock Braking System (ABS) and electronic brake-force distribution. The steering system is a rack-and-pinion setup with electric power steering, offering precise and responsive handling. The vehicle rides on 245/50 R18 tires mounted on 8J x 18 inch alloy wheels.
Market Reception & Comparison
The Infiniti Q70 3.7 AWD was generally well-received by automotive critics, who praised its comfortable ride, spacious interior, and strong engine performance. However, some reviewers noted that its styling was becoming dated compared to newer competitors. Fuel economy was considered average for its class. Compared to other trims in the Q70 lineup, the 3.7 AWD offered a significant performance upgrade over the base 3.5-liter V6 model, but at a higher price point. It competed with luxury sedans such as the Acura RLX, Lexus GS, and BMW 5 Series. Reliability was generally good, with the VQ37VHR engine proving to be a durable and dependable powerplant.
Legacy
The Infiniti Q70 3.7 AWD has established a reputation as a reliable and comfortable luxury sedan in the used car market. The VQ37VHR engine is known for its longevity and relatively low maintenance costs. While it may not offer the latest technology features found in newer vehicles, its combination of performance, comfort, and value makes it an attractive option for buyers seeking a well-rounded luxury sedan. Parts availability remains good, and the vehicle’s relatively simple mechanical design makes it relatively easy to maintain. The Q70 represents a final evolution of Infiniti’s traditional luxury sedan formula, offering a blend of refinement and performance that continues to appeal to a dedicated following.
