2013-2017 Infiniti Q50 2.2D (170 Hp) Automatic

The Infiniti Q50 2.2D, produced between 2013 and 2017, represented Infiniti’s entry into the European diesel market and a strategic offering in regions where diesel fuel was prevalent. This variant, equipped with a 2.2-liter four-cylinder diesel engine producing 170 horsepower, was paired exclusively with a seven-speed automatic transmission and rear-wheel drive. It occupied a mid-range position within the Q50 lineup, positioned below the more powerful 3.7-liter V6 models and above any base gasoline-powered options available in certain markets. The Q50, as a whole, was the successor to the G37, marking a shift in Infiniti’s naming convention and design language.

Technical Specifications

Powertrain & Engine Architecture

The heart of the Q50 2.2D is the OM651.930, a 2.143-liter inline-four cylinder diesel engine developed by Mercedes-Benz and supplied to Infiniti under a collaborative agreement. This engine utilizes a common-rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. A turbocharger with an intercooler is employed to boost power and torque, mitigating turbo lag and improving responsiveness. The engine features four valves per cylinder and a single overhead camshaft. The seven-speed automatic transmission, sourced from ZF, provides smooth and efficient gear changes. This transmission was known for its responsiveness and ability to adapt to driving conditions. The transmission’s gear ratios were tuned to balance fuel economy with acceptable acceleration.

Driving Characteristics

The Q50 2.2D Automatic offered a comfortable and refined driving experience, prioritizing fuel efficiency and ease of use over outright performance. While 170 horsepower isn’t a substantial figure, the engine’s 310 lb-ft of torque provided adequate pulling power for everyday driving and highway cruising. Acceleration from 0-60 mph took approximately 8.1 seconds, which was respectable for a diesel-powered sedan of its size. Compared to the Q50 3.7-liter V6, the 2.2D felt noticeably slower, particularly during quick overtaking maneuvers. However, the diesel engine’s low-end torque made it more tractable in city traffic. The automatic transmission generally shifted smoothly, although some drivers noted occasional hesitation during downshifts. The rear-wheel-drive configuration contributed to a balanced feel, but it lacked the all-weather capability of all-wheel-drive models.

Equipment & Trim Levels

The Q50 2.2D typically came standard with features such as leather upholstery, dual-zone automatic climate control, a touchscreen infotainment system, and a rearview camera. Higher trim levels added features like navigation, premium audio systems, and advanced safety technologies such as lane departure warning and blind-spot monitoring. Optional extras included a panoramic sunroof, heated and ventilated front seats, and adaptive cruise control. Interior color schemes were generally conservative, with black and gray being the most common options. The dashboard layout was modern and driver-focused, with a prominent center console display.

Chassis & Braking

The Q50 2.2D utilized a double wishbone front suspension and an independent multi-link rear suspension, providing a comfortable ride and good handling characteristics. Stabilizer bars were fitted to both axles to reduce body roll during cornering. The braking system consisted of ventilated discs on all four wheels, providing ample stopping power. Anti-lock brakes (ABS) and electronic brake-force distribution (EBD) were standard features. The steering was electrically assisted, offering a light and precise feel.

Market Reception & Comparison

The Infiniti Q50 2.2D was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. However, some reviewers criticized its relatively modest performance compared to its gasoline-powered counterparts. In terms of fuel economy, the Q50 2.2D offered a significant advantage over the V6 models, achieving around 49 US mpg on the combined cycle. Reliability was generally good, although some owners reported minor issues with the infotainment system. Compared to rivals such as the BMW 320d and Audi A4 TDI, the Q50 2.2D offered a competitive package, with a focus on value and comfort.

Legacy

The OM651 diesel engine, used in the Q50 2.2D, has proven to be a durable and reliable powerplant when properly maintained. While diesel engines, in general, have faced increased scrutiny regarding emissions, the OM651 remains a respected unit. On the used car market, the Q50 2.2D represents a relatively affordable entry point into the Infiniti brand. Its fuel efficiency and comfortable ride make it a practical choice for commuters and long-distance drivers. However, potential buyers should be aware of the higher maintenance costs associated with diesel engines, such as diesel particulate filter (DPF) maintenance and potential issues with the fuel injection system. Overall, the Q50 2.2D remains a viable option for those seeking a refined and economical luxury sedan.