2015-2016 BMW 3 Series Gran Turismo (F34) 318d (150 Hp) Steptronic

The BMW 3 Series Gran Turismo (F34) 318d Steptronic, produced from 2015 to 2016, represents a unique offering within the broader F34 Gran Turismo lineup. Positioned as an entry-level diesel variant, it aimed to provide a blend of practicality, efficiency, and BMW’s signature driving experience. The F34 Gran Turismo, itself a relatively short-lived model, sought to combine the sleek styling of a coupe with the spaciousness of a touring wagon, targeting buyers who desired a versatile and premium vehicle. This 318d model, equipped with a 2.0-liter turbocharged diesel engine and an 8-speed automatic transmission, served as a more accessible alternative to the higher-performance and more expensive 320d and 330d models.

Technical Specifications

Powertrain & Engine Architecture

The heart of the 318d Gran Turismo is BMW’s B47D20A 2.0-liter inline-four diesel engine. This engine is a member of BMW’s modular engine family, known for its efficiency and refinement. It utilizes a second-generation common rail direct injection system, delivering fuel at pressures up to 2,000 bar for optimized combustion. The engine is turbocharged with a twin-scroll turbocharger, which helps to reduce turbo lag and improve responsiveness. An intercooler further cools the intake air, increasing power output. The B47 engine also features variable valve timing (VANOS) and variable turbine geometry (VTG) on the turbocharger to optimize performance across the rev range. The engine produces 150 horsepower at 4,000 rpm and 320 Nm (236 lb-ft) of torque between 1,500 and 3,000 rpm. This torque output is a key characteristic of diesel engines, providing strong pulling power at lower engine speeds. The engine is paired with BMW’s 8-speed Steptronic automatic transmission, which offers smooth and quick gear changes. This transmission is known for its efficiency and adaptability, contributing to the car’s overall fuel economy.

Driving Characteristics

The 318d Steptronic delivers a comfortable and refined driving experience. While not a performance-oriented model, the 320 Nm of torque provides adequate acceleration for everyday driving. The 0-60 mph sprint takes approximately 8.7 seconds, and the car has a top speed of 130.49 mph. The 8-speed automatic transmission is well-matched to the engine, providing smooth gear changes and keeping the engine in its optimal power band. Compared to the more powerful 320d and 330d models, the 318d feels less urgent in its acceleration, but it offers a more relaxed and fuel-efficient driving experience. The gear ratios are tuned for efficiency, with taller gears for highway cruising. The steering is precise and well-weighted, typical of BMW, and the suspension provides a good balance between comfort and handling.

Equipment & Trim Levels

The 318d Gran Turismo typically came equipped with a generous amount of standard features. These included automatic climate control, a BMW iDrive infotainment system with a 6.5-inch display, Bluetooth connectivity, and a leather-wrapped steering wheel. Standard safety features included ABS, stability control, and multiple airbags. Optional extras included a larger iDrive display, navigation system, premium sound system, heated seats, and a panoramic sunroof. Interior upholstery was typically cloth, with leather options available as an upgrade. Trim levels varied depending on the market, but generally, the 318d was positioned as a mid-range offering, bridging the gap between the base models and the more luxurious trims.

Chassis & Braking

The F34 Gran Turismo utilizes a sophisticated chassis design. The front suspension features independent coil springs and struts, while the rear suspension employs an independent multi-link setup. This configuration provides a comfortable ride and good handling characteristics. The 318d is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) is standard, enhancing safety during emergency braking situations. The car’s weight distribution is well-balanced, contributing to its stability and handling. The standard tire size is 225/55 R17, with larger sizes available as options.

Market Reception & Comparison

The 318d Gran Turismo was generally well-received by critics for its fuel efficiency, comfortable ride, and spacious interior. However, some reviewers noted that the engine lacked the punch of the more powerful diesel options. Compared to the 320d, the 318d offered a lower price point but sacrificed some performance. The 318d’s fuel economy was a key selling point, with combined fuel consumption figures ranging from 4.3 to 4.5 l/100 km (54.7 – 52.3 US mpg). Reliability was generally good, although, like all modern diesel engines, the 318d’s emissions control systems (particularly the diesel particulate filter) required careful maintenance.

Legacy

The BMW 3 Series Gran Turismo (F34) was discontinued after a relatively short production run. The 318d variant, while not the most popular model in the lineup, remains a viable option in the used car market. The B47 engine is known for its durability, but regular maintenance is crucial to ensure long-term reliability. The diesel particulate filter (DPF) can be a potential issue if the car is primarily used for short trips, as it requires periodic regeneration. Overall, the 318d Gran Turismo offers a compelling combination of practicality, efficiency, and BMW’s signature driving experience, making it a worthwhile consideration for buyers seeking a versatile and refined grand tourer.