The BMW 3 Series Gran Turismo (F34) 320d Steptronic, produced from 2015 to 2016, represents a unique offering within the broader F34 Gran Turismo lineup. Positioned as a mid-range variant, it aimed to bridge the gap between comfort and efficiency, appealing to buyers seeking a more spacious and practical alternative to the standard 3 Series sedan or wagon. Built on the F34 platform, which blended elements of the 3 Series with increased rear passenger space and a hatchback-style trunk, the 320d Steptronic offered a compelling package for families and those prioritizing versatility. This model specifically utilized a 2.0-liter turbocharged diesel engine paired with BMW’s 8-speed Steptronic automatic transmission.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Gran Turismo (F34) |
| Type (Engine) | 320d (190 Hp) Steptronic |
| Start of production | 2015 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Grand Tourer |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.0 – 5.4 l/100 km (47 – 43.6 US mpg, 56.5 – 52.3 UK mpg, 20 – 18.5 km/l) |
| Fuel consumption (extra urban) | 3.9 – 4.1 l/100 km (60.3 – 57.4 US mpg, 72.4 – 68.9 UK mpg, 25.6 – 24.4 km/l) |
| Fuel consumption (combined) | 4.3 – 4.6 l/100 km (54.7 – 51.1 US mpg, 65.7 – 61.4 UK mpg, 23.3 – 21.7 km/l) |
| CO2 emissions | 113 – 120 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.7 sec |
| Acceleration 0 – 62 mph | 7.7 sec |
| Acceleration 0 – 60 mph | 7.3 sec |
| Maximum speed | 226 km/h (140.43 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.4 kg/Hp, 119.1 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 250.8 Nm/tonne |
| Power | 190 Hp @ 4000 rpm |
| Power per litre | 95.2 Hp/l |
| Torque | 400 Nm @ 1750-2500 rpm (295.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20A |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1595 kg (3516.37 lbs.) |
| Max. weight | 2165 kg (4773.01 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Trunk (boot) space – minimum | 520 l (18.36 cu. ft.) |
| Trunk (boot) space – maximum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 57 l (15.06 US gal | 12.54 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 745 kg (1642.44 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4824 mm (189.92 in.) |
| Width | 1828 mm (71.97 in.) |
| Height | 1508 mm (59.37 in.) |
| Wheelbase | 2920 mm (114.96 in.) |
| Front track | 1541 mm (60.67 in.) |
| Rear (Back) track | 1586 mm (62.44 in.) |
| Ride height (ground clearance) | 165 mm (6.5 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 11.8 m (38.71 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| 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 | 225/55 R17 97V; 225/50 R18; 255/45 R18; 225/45 R19; 255/40 R19 |
| Wheel rims size | 8J x 17; 8J x 18; 9J x 18; 8J x 19; 9J x 19 |
Powertrain & Engine Architecture
The heart of the 320d Gran Turismo Steptronic is the BMW 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 features a single twin-scroll turbocharger with variable geometry turbine (VGT) technology, along with direct common-rail fuel injection operating at pressures up to 2,000 bar. The B47 engine utilizes four valves per cylinder and a sophisticated engine management system to optimize combustion and reduce emissions. The engine’s aluminum block and head contribute to weight savings. The Steptronic 8-speed automatic transmission is a crucial component, offering smooth and quick shifts. It features a torque converter and allows for both fully automatic operation and manual gear selection via steering wheel-mounted paddles or the gear selector. The transmission is designed to work seamlessly with the engine’s torque curve, providing optimal acceleration and fuel economy.
Driving Characteristics
The 320d Steptronic delivers a comfortable and refined driving experience. While not overtly sporty, the 190 horsepower and 400 Nm (295 lb-ft) of torque provide adequate performance for everyday driving and highway cruising. Acceleration from 0 to 60 mph takes approximately 7.3 seconds. The Steptronic transmission contributes to smooth gear changes, and the engine’s strong low-end torque makes overtaking relatively effortless. Compared to the 320i (gasoline) variant, the 320d offers superior fuel economy and a more relaxed driving style. However, it lacks the outright punch of higher-output models like the 330d. The Gran Turismo’s longer wheelbase and softer suspension tuning prioritize ride comfort over sharp handling, making it a more suitable choice for long journeys than the standard 3 Series.
Equipment & Trim Levels
The 320d Steptronic typically came equipped with a generous array of standard features. These included automatic climate control, power-adjustable front seats, a BMW iDrive infotainment system with a 6.5-inch display, Bluetooth connectivity, and rear parking sensors. Upholstery was typically a combination of cloth and leatherette, with full leather options available as an upgrade. Common optional extras included a larger iDrive screen, navigation system, Harman Kardon premium sound system, panoramic sunroof, and adaptive cruise control. The Gran Turismo’s spacious interior and large trunk (520-1600 liters) were key selling points, offering ample room for passengers and luggage.
Chassis & Braking
The F34 320d Gran Turismo features a MacPherson strut front suspension and a multi-link rear suspension. The suspension is tuned for comfort, providing a smooth ride over various road surfaces. The braking system consists of ventilated disc brakes on all four wheels, providing adequate stopping power. Anti-lock Braking System (ABS), Dynamic Stability Control (DSC), and Brake Assist are standard safety features. The steering is electrically assisted, offering precise and responsive control. The Gran Turismo’s increased weight compared to the standard 3 Series necessitates a slightly firmer suspension setup to maintain stability and control.
Market Reception & Comparison
The 3 Series Gran Turismo, including the 320d Steptronic, received mixed reviews from automotive critics. While praised for its spaciousness, practicality, and fuel efficiency, it was sometimes criticized for its styling and lack of sporty driving dynamics. Compared to the 320d sedan, the Gran Turismo offered more rear passenger space and a larger trunk, but at the expense of some handling agility. The 330d variant provided significantly more power and performance, but at a higher price point. Fuel economy figures for the 320d Steptronic were consistently impressive, averaging around 55 mpg on the combined cycle. Reliability has generally been good, with the B47 engine proving to be a robust and durable unit.
Legacy
The BMW 3 Series Gran Turismo (F34) was discontinued in 2016, replaced by the updated G30 3 Series. However, the 320d Steptronic remains a popular choice in the used car market, particularly for buyers seeking a comfortable, practical, and fuel-efficient family vehicle. The B47 engine has proven to be relatively reliable, although regular maintenance is essential. Common issues include diesel particulate filter (DPF) clogging and occasional turbocharger problems. Overall, the 320d Steptronic represents a well-rounded and capable vehicle that continues to offer good value for money.
