The Infiniti QX70 3.0D V6, produced from 2013 onwards, represents a compelling offering in the mid-size luxury SUV segment. Positioned as a more performance-oriented alternative to traditional luxury crossovers, the QX70 blended sporty styling with a robust diesel powertrain. This particular variant, equipped with the 3.0-liter V6 diesel engine and a seven-speed automatic transmission coupled with all-wheel drive (AWD), aimed to deliver a balance of fuel efficiency, torque, and all-weather capability. It occupied a middle ground within the QX70 lineup, offering a step up in performance from the gasoline-powered models while remaining more accessible than the higher-performance trims.
Technical Specifications
| Brand | Infiniti |
| Model | QX70 |
| Generation | QX70 |
| Type (Engine) | 3.0D V6 (238 Hp) Automatic AWD |
| Start of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 10.8 l/100 km (21.8 US mpg) |
| Fuel consumption (extra urban) | 7.3 l/100 km (32.2 US mpg) |
| Fuel consumption (combined) | 8.6 l/100 km (27.4 US mpg) |
| CO2 emissions | 225 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 212 km/h (131.73 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.1 kg/Hp |
| Weight-to-torque ratio | 4 kg/Nm |
| Power | 238 Hp @ 3750 rpm |
| Torque | 550 Nm @ 1750 rpm (405.66 lb.-ft. @ 1750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | V9X |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Kerb Weight | 2175 kg (4795.05 lbs.) |
| Trunk (boot) space – minimum | 410 l (14.48 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Length | 4865 mm (191.54 in.) |
| Width including mirrors | 2134 mm (84.02 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.) |
| Drag coefficient (Cd) | 0.36 |
| Minimum turning circle | 11.2 m (36.75 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the QX70 3.0D is the V9X engine, a 2.993-liter V6 diesel. This engine utilizes a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A variable geometry turbocharger with an intercooler further enhances performance by increasing air intake and reducing intake air temperature. The engine produces 238 horsepower at 3750 rpm and a substantial 550 Nm (405.66 lb-ft) of torque at a low 1750 rpm. This torque output is a key characteristic of the engine, providing strong acceleration and effortless cruising. The engine is longitudinally mounted, contributing to the vehicle’s balanced handling. The seven-speed automatic transmission, sourced from AISIN, is designed to handle the engine’s torque output efficiently. It features adaptive shift logic, adjusting shift points based on driving conditions and driver input.
Driving Characteristics
The QX70 3.0D Automatic AWD delivers a refined and capable driving experience. The abundance of low-end torque from the diesel engine makes for brisk acceleration, especially in everyday driving situations. While not a sports car, the QX70 feels surprisingly agile for its size. The seven-speed automatic transmission provides smooth and timely gear changes, although it may not be as responsive as some dual-clutch transmissions. The AWD system provides excellent traction in various weather conditions, enhancing stability and confidence. Compared to the gasoline-powered QX70 models, the 3.0D offers significantly improved fuel economy and a more relaxed driving experience, particularly on long journeys. It doesn’t possess the outright punch of higher-performance trims, but its torque-rich character makes it a very usable and enjoyable vehicle.
Equipment & Trim Levels
The QX70 3.0D typically came well-equipped, reflecting its luxury positioning. Standard features often included leather upholstery, power-adjustable front seats, a premium audio system, dual-zone automatic climate control, and a rearview camera. Higher trim levels added features such as a navigation system, heated and ventilated front seats, a panoramic sunroof, and advanced safety technologies like adaptive cruise control and lane departure warning. Exterior features generally included alloy wheels, xenon headlights, and a power liftgate. Optional extras allowed buyers to further personalize their QX70 with items like upgraded interior trim, different wheel designs, and a rear-seat entertainment system.
Chassis & Braking
The QX70 utilizes a robust chassis with a double wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride while maintaining good handling characteristics. The suspension is tuned to balance comfort and control, offering a composed ride on most road surfaces. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. Anti-lock brakes (ABS) and electronic brake-force distribution (EBD) are standard features, enhancing safety and stability during braking maneuvers. The vehicle’s weight, around 2175 kg (4795.05 lbs), is well-managed by the suspension and braking systems.
Market Reception & Comparison
The Infiniti QX70 3.0D was generally well-received by automotive critics. It was praised for its stylish design, comfortable interior, and strong diesel engine. The fuel economy was a significant selling point, particularly in Europe where diesel engines are more popular. However, some critics noted that the interior, while well-appointed, wasn’t quite as luxurious as some of its German rivals. Compared to the gasoline-powered QX70 models, the 3.0D offered a more refined driving experience and better fuel efficiency. Against competitors like the BMW X6 and Porsche Cayenne, the QX70 offered a compelling value proposition, providing a similar level of performance and luxury at a lower price point.
Legacy
The V9X diesel engine, while not without its complexities, has proven to be relatively reliable when properly maintained. Regular servicing, including oil changes and filter replacements, is crucial for ensuring long-term durability. The seven-speed automatic transmission is also generally considered to be a robust unit. In the used car market, the QX70 3.0D represents a good value for those seeking a stylish and capable luxury SUV. However, potential buyers should be aware of the potential maintenance costs associated with a diesel engine and ensure that the vehicle has been well-maintained throughout its life. The QX70, in general, remains a distinctive and desirable vehicle, appreciated for its unique blend of style, performance, and practicality.
