The Infiniti Q50 3.7 V6 AWD Automatic, produced from 2014 to 2015, represented a significant step forward for Infiniti’s mid-size luxury sedan. Positioned as a performance-oriented trim within the broader Q50 lineup (which also included 2.5L four-cylinder and 3.5L hybrid variants), this model aimed to deliver a compelling blend of power, handling, and all-weather capability. It was a key component of Infiniti’s strategy to attract buyers seeking a sportier alternative to established German rivals like the BMW 3 Series and Audi A4. The Q50, internally designated as the V37 platform, marked a departure from the G37 it replaced, introducing a more sophisticated design and a focus on advanced technology.
Technical Specifications
| Brand | Infiniti |
| Model | Q50 |
| Generation | Q50 |
| Type (Engine) | 3.7 V6 (328 Hp) AWD Automatic |
| Start of production | 2014 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.2 kg/Hp, 192.9 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 214.7 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 |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | VQ37VHR |
| Engine displacement | 3696 cm3, 225.54 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, CVTCS |
| Engine oil capacity | 4.9 l, 5.18 US qt | 4.31 UK qt |
| Coolant | 9.9 l, 10.46 US qt | 8.71 UK qt |
| Kerb Weight | 1700-1746 kg, 3747.86 – 3849.27 lbs. |
| Fuel tank capacity | 76 l, 20.08 US gal | 16.72 UK gal |
| Length | 4783-4803 mm, 188.31 – 189.09 in. |
| Width | 1824 mm, 71.81 in. |
| Height | 1453 mm, 57.2 in. |
| Wheelbase | 2850 mm, 112.2 in. |
| Front track | 1519 mm, 59.8 in. |
| Rear (Back) track | 1519-1529 mm, 59.8 – 60.2 in. |
| Drag coefficient (Cd) | 0.26-0.28 |
| 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 ASC |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 320×28 mm |
| Rear brakes | Ventilated discs, 307×15 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17; 245/40 R19 |
| Wheel rims size | 7.5J x 17; 8.5J x 19 |
Powertrain & Engine Architecture
The heart of the Q50 3.7 was the VQ37VHR 3.7-liter V6 engine. This engine, a member of Nissan/Infiniti’s highly regarded VQ family, was known for its smooth power delivery and robust construction. The “VHR” designation indicated Variable Valve Timing and lift control, optimizing performance across the rev range. It featured a direct injection system, enhancing fuel efficiency and reducing emissions. The engine produced 328 horsepower at 7,000 rpm and 269 lb-ft of torque at 5,200 rpm. The engine’s longitudinal mounting allowed for a more balanced weight distribution. Paired with the engine was a 7-speed automatic transmission with Adaptive Shift Control (ASC), designed to learn driving habits and adjust shift points accordingly. While offering smooth shifts, the ASC system wasn’t always the most responsive in manual mode, a common criticism.
Driving Characteristics
The Q50 3.7 AWD Automatic delivered a noticeably more engaging driving experience than its four-cylinder counterpart. The 3.7L V6 provided ample power for confident acceleration and passing maneuvers. The all-wheel-drive system, which primarily operated in a rear-wheel-drive configuration with power sent to the front wheels as needed, enhanced traction and stability, particularly in inclement weather. The 7-speed automatic transmission, while generally smooth, could feel slightly hesitant during quick downshifts. Compared to the available manual transmission, the automatic sacrificed some driver involvement, but offered greater convenience for daily commuting. The steering, while precise, lacked some of the feedback preferred by driving enthusiasts.
Equipment & Trim Levels
The Q50 3.7 AWD Automatic typically came well-equipped, reflecting its position as a premium trim. Standard features included leather upholstery, power-adjustable front seats, a touchscreen infotainment system, a rearview camera, and automatic climate control. Available options included a premium audio system, navigation, heated and ventilated front seats, and a suite of advanced safety features like lane departure warning and blind-spot monitoring. Interior trim options varied, with choices ranging from aluminum accents to woodgrain finishes. The Q50 also offered a unique dual-screen display configuration, which became a signature feature of later Infiniti models.
Chassis & Braking
The Q50 utilized a double wishbone front suspension and an independent multi-link rear suspension, providing a comfortable ride while maintaining good handling characteristics. Stabilizer bars were standard front and rear, reducing body roll during cornering. Braking duties were handled by ventilated discs at all four corners, providing ample stopping power. The Q50’s ABS (Anti-lock Braking System) and electronic brake-force distribution further enhanced safety. The AWD system added weight compared to the rear-wheel-drive models, but the added traction often offset this disadvantage.
Market Reception & Comparison
Critics generally praised the Q50 3.7 AWD Automatic for its powerful engine, comfortable ride, and well-appointed interior. However, some reviewers noted the somewhat detached steering feel and the occasionally sluggish response of the automatic transmission. Compared to the base 2.5L Q50, the 3.7 offered a significant performance upgrade, justifying its higher price tag. Against competitors like the BMW 335i and Audi A4 3.0T, the Q50 offered a compelling value proposition, often undercutting their prices while delivering comparable performance. Fuel economy was reasonable for a V6-powered luxury sedan, averaging around 19 mpg city and 27 mpg highway.
Legacy
The Infiniti Q50 3.7 V6 AWD Automatic has proven to be a relatively reliable vehicle, with the VQ37VHR engine known for its durability. Common maintenance items include regular oil changes, coolant flushes, and spark plug replacements. The automatic transmission, while generally dependable, may require servicing at higher mileage. Today, the Q50 3.7 represents a good value on the used car market, offering a blend of performance, luxury, and reliability. Its powerful engine and all-wheel-drive system continue to appeal to buyers seeking a sporty and capable sedan. While newer Q50 models have introduced more advanced technology, the 2014-2015 3.7 remains a desirable option for those seeking a well-rounded and engaging driving experience.
