The BMW X6 (F16) 40d xDrive Steptronic, produced between 2014 and 2018, represents a significant iteration of BMW’s Sports Activity Coupe. Positioned as a mid-range offering within the F16 X6 lineup, it bridged the gap between the entry-level xDrive35i and the high-performance xDrive50i and M variants. This model combined a potent diesel engine with BMW’s xDrive all-wheel-drive system and the Steptronic eight-speed automatic transmission, aiming to deliver a blend of performance, efficiency, and luxury. The F16 generation marked a refinement of the original X6 concept, addressing some criticisms of the first generation while maintaining its distinctive coupe-like roofline and aggressive styling.
Technical Specifications
| Brand | BMW |
| Model | X6 |
| Generation | X6 (F16) |
| Type (Engine) | 40d (313 Hp) xDrive Steptronic |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 7.0-7.1 l/100 km (33.6 – 33.1 US mpg, 40.4 – 39.8 UK mpg, 14.3 – 14.1 km/l) |
| Fuel consumption (economy) – extra urban | 5.7-5.8 l/100 km (41.3 – 40.6 US mpg, 49.6 – 48.7 UK mpg, 17.5 – 17.2 km/l) |
| Fuel consumption (economy) – combined | 6.2-6.3 l/100 km (37.9 – 37.3 US mpg, 45.6 – 44.8 UK mpg, 16.1 – 15.9 km/l) |
| CO2 emissions | 163-165 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.7 kg/Hp, 148.7 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 299.3 Nm/tonne |
| Power | 313 Hp @ 4400 rpm |
| Power per litre | 104.6 Hp/l |
| Torque | 630 Nm @ 1500-2500 rpm (464.66 lb.-ft. @ 1500-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N57D30B |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| 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 | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 12.6 l (13.31 US qt | 11.09 UK qt) |
| Kerb Weight | 2105 kg (4640.73 lbs.) |
| Max. weight | 2820 kg (6217.04 lbs.) |
| Max load | 715 kg (1576.31 lbs.) |
| Trunk (boot) space – minimum | 550 l (19.42 cu. ft.) |
| Trunk (boot) space – maximum | 1525 l (53.85 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 4909 mm (193.27 in.) |
| Width | 1989 mm (78.31 in.) |
| Width including mirrors | 2170 mm (85.43 in.) |
| Height | 1702 mm (67.01 in.) |
| Wheelbase | 2933 mm (115.47 in.) |
| Front track | 1640 mm (64.57 in.) |
| Rear (Back) track | 1706 mm (67.17 in.) |
| Front overhang | 890 mm (35.04 in.) |
| Rear overhang | 1086 mm (42.76 in.) |
| Ride height (ground clearance) | 212 mm (8.35 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle (turning diameter) | 12.8 m (41.99 ft.) |
| Approach angle | 25.0° |
| Departure angle | 22.5° |
| Ramp-over (brakeover) angle | 20.0° |
| Wading depth | 500 mm (19.69 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone |
| 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 |
| Tires size | 255/50 R19; 285/45 R19; 275/40 R20; 315/35 R20 |
| Wheel rims size | 9J x 19; 10J x 19; 10J x 20; 11J x 20 |
INTRODUCTION
The BMW X6 (F16) 40d xDrive Steptronic, launched in 2014, was a key component of BMW’s second-generation X6 lineup. Built on the F16 platform, it continued the brand’s foray into the luxury sports activity coupe segment. This variant was specifically designed to appeal to buyers seeking a balance between performance and fuel efficiency, offering a diesel powertrain in a vehicle known for its dynamic handling and distinctive styling. The 40d model occupied a crucial position in the X6 range, providing a more accessible entry point into the X6 experience compared to the higher-powered gasoline options.
Powertrain & Engine Architecture
At the heart of the X6 40d lies the N57D30B inline-six diesel engine. This engine, a mainstay of BMW’s diesel offerings, is renowned for its robust construction and strong torque output. The 2993cc engine utilizes a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The N57D30B features a twin-turbocharger setup – a low-pressure turbocharger combined with a high-pressure turbocharger – working in sequence to minimize turbo lag and provide a broad, flat torque curve. The engine also incorporates an intercooler to further enhance performance by cooling the intake air. Paired with this engine is the ZF 8HP70 eight-speed automatic transmission, marketed by BMW as “Steptronic.” This transmission is known for its smooth shifts, quick response, and efficiency. It offers both fully automatic operation and manual gear selection via steering wheel-mounted paddles or the gear selector.
Driving Characteristics
The X6 40d xDrive Steptronic delivers a refined and capable driving experience. The engine’s 630 Nm (464.66 lb-ft) of torque, available from a low 1500 rpm, provides strong acceleration and effortless cruising. While not as overtly sporty as the gasoline-powered X6 variants, the 40d offers ample power for overtaking and maintaining highway speeds. The eight-speed automatic transmission contributes to this smoothness, selecting the appropriate gear for optimal performance and efficiency. The xDrive all-wheel-drive system provides excellent traction in various conditions, enhancing stability and confidence. The gear ratios are tuned for a balance between acceleration and fuel economy, with taller gears for relaxed highway driving and shorter gears for quicker response. Compared to the xDrive35i, the 40d offers a noticeable increase in performance, while the xDrive50i provides even more power but at the expense of fuel efficiency.
Equipment & Trim Levels
The X6 40d xDrive Steptronic came standard with a comprehensive array of features, reflecting its positioning as a luxury SUV. Standard equipment typically included leather upholstery, power-adjustable front seats with memory function, a premium sound system, dual-zone automatic climate control, and a rear-view camera. Infotainment was handled by BMW’s iDrive system, featuring a high-resolution display screen and intuitive controls. Optional extras included features such as a panoramic sunroof, adaptive cruise control, head-up display, ventilated front seats, and a rear entertainment system. Trim levels offered variations in interior materials and exterior styling cues, allowing buyers to personalize their vehicle. Popular options included upgraded leather packages, wood trim, and various wheel designs.
Chassis & Braking
The F16 X6 40d features a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable ride and precise handling. The suspension is tuned to balance comfort and control, minimizing body roll during cornering. The X6 40d is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and dynamic stability control (DSC) are standard features, enhancing safety and stability. The xDrive all-wheel-drive system actively distributes torque between the front and rear axles, optimizing traction and handling based on road conditions.
Market Reception & Comparison
The X6 40d xDrive Steptronic was generally well-received by automotive critics. It was praised for its strong diesel engine, comfortable ride, and luxurious interior. Critics noted the excellent fuel economy offered by the diesel powertrain, making it an attractive option for long-distance drivers. Compared to the xDrive35i, the 40d offered a significant performance upgrade without a substantial increase in fuel consumption. However, some critics found the ride to be slightly firm, and the styling remained polarizing. In terms of reliability, the N57 engine has proven to be generally robust, although preventative maintenance, particularly regarding the diesel particulate filter (DPF), is crucial.
Legacy
The BMW X6 (F16) 40d xDrive Steptronic remains a popular choice in the used car market. Its combination of performance, efficiency, and luxury continues to appeal to buyers seeking a versatile and capable SUV. The N57 engine is known for its longevity, but regular maintenance is essential to ensure its continued reliability. The Steptronic transmission has also proven to be durable, although fluid changes are recommended at the manufacturer’s specified intervals. The F16 X6 40d represents a refined and well-rounded offering in the luxury sports activity coupe segment, and its enduring popularity is a testament to its quality and appeal.
