The BMW X6 (E71 LCI), specifically the 40d variant with the xDrive all-wheel-drive system and Steptronic 8-speed automatic transmission, represents a mid-cycle refresh of the original X6 introduced in 2008. Produced from 2012 to 2014, this model aimed to refine the controversial, yet popular, Sports Activity Coupe (SAC) formula. The “LCI” (Life Cycle Impulse) facelift brought styling updates, improved efficiency, and enhanced technology to the X6 range. The 40d trim occupied a sweet spot in the lineup, offering a balance of performance, luxury, and fuel economy, positioned above the entry-level xDrive30d and below the high-performance xDrive50i and X6 M.
Technical Specifications
| Brand | BMW |
| Model | X6 |
| Generation | X6 (E71 LCI, facelift 2012) |
| Type (Engine) | 40d (306 Hp) xDrive Steptronic |
| Start of production | 2012 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 4-5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 km/l) |
| Fuel consumption (extra urban) | 6.8 l/100 km (34.6 US mpg, 41.5 UK mpg, 14.7 km/l) |
| Fuel consumption (combined) | 7.5 l/100 km (31.4 US mpg, 37.7 UK mpg, 13.3 km/l) |
| CO2 emissions | 198 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 236 km/h (146.64 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.9 kg/Hp, 145 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 284.4 Nm/tonne |
| Power | 306 Hp @ 4400 rpm |
| Power per litre | 102.2 Hp/l |
| Torque | 600 Nm @ 1500-2500 rpm (442.54 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 | 6.7 l (7.08 US qt | 5.9 UK qt) |
| Coolant | 10.4 l (10.99 US qt | 9.15 UK qt) |
| Kerb Weight | 2110 kg (4651.75 lbs.) |
| Max. weight | 2710 kg (5974.53 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Trunk (boot) space – minimum | 570 l (20.13 cu. ft.) |
| Trunk (boot) space – maximum | 1450 l (51.21 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 | 120 kg (264.55 lbs.) |
| Length | 4877 mm (192.01 in.) |
| Width | 1983 mm (78.07 in.) |
| Height | 1690 mm (66.54 in.) |
| Wheelbase | 2933 mm (115.47 in.) |
| Front track | 1644 mm (64.72 in.) |
| Rear (Back) track | 1706 mm (67.17 in.) |
| Ride height (ground clearance) | 212 mm (8.35 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 12.8 m (41.99 ft.) |
| Approach angle | 25.1° |
| Departure angle | 25.5° |
| Ramp-over (brakeover) angle | 19.1° |
| 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 107V XL |
| Wheel rims size | 9J x 19 |
INTRODUCTION
The BMW X6 E71 LCI 40d xDrive Steptronic, launched in 2012, built upon the foundation of the original X6, a vehicle that pioneered the luxury sports activity coupe segment. The LCI update brought revised styling cues, including new headlights, kidney grilles, and bumpers, along with interior enhancements and updated engine technology. The 40d model, powered by the N57D30B inline-six diesel engine, was a key offering in the X6 range, appealing to buyers seeking a blend of performance, efficiency, and practicality. It was designed to compete with other luxury SUVs, offering a more dynamic driving experience than traditional options.
Powertrain & Engine Architecture
At the heart of the X6 40d lies the N57D30B 3.0-liter inline-six diesel engine. This engine is a highly sophisticated unit featuring common-rail direct injection, a variable geometry turbocharger, and an intercooler. The N57 family of engines is known for its robust construction and ability to be tuned for increased performance. The 40d variant produced 306 horsepower at 4400 rpm and a substantial 600 Nm (442.54 lb-ft) of torque between 1500 and 2500 rpm. This broad torque curve provided strong acceleration in real-world driving conditions. The engine also incorporated BMW’s BlueEfficiency technologies to improve fuel economy and reduce emissions. The Steptronic 8-speed automatic transmission, a crucial component of this variant, offered smooth and quick gear changes. It featured adaptive shift programs that adjusted to the driver’s style and driving conditions. The transmission was designed to optimize fuel efficiency and performance, with close gear ratios for responsive acceleration.
Driving Characteristics
The X6 40d with the Steptronic transmission delivered a refined and capable driving experience. The abundant torque from the N57 engine provided effortless acceleration, making it well-suited for highway cruising and overtaking. While not as overtly sporty as the gasoline-powered X6 variants, the 40d offered a satisfying level of performance. The 8-speed automatic transmission contributed to a smooth and seamless driving experience, although some drivers might have preferred the more engaging feel of a manual gearbox. Compared to the X6 xDrive30d, the 40d offered a noticeable performance upgrade, while remaining more fuel-efficient than the X6 xDrive50i. The xDrive all-wheel-drive system provided excellent traction and stability in various weather conditions.
Equipment & Trim Levels
The X6 40d typically came well-equipped as standard. Common features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, dual-zone automatic climate control, and a navigation system. Optional extras included features like adaptive cruise control, a head-up display, panoramic sunroof, and upgraded interior trim options. The LCI facelift also brought updated iDrive infotainment system with improved functionality and a larger display screen. Interior color schemes were customizable, with a range of leather and trim options available to suit individual preferences.
Chassis & Braking
The X6 E71 LCI featured a robust chassis designed to handle the vehicle’s weight and power. It utilized a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable ride and precise handling. The suspension was tuned to balance comfort and sportiness. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The X6 40d also incorporated ABS (Anti-lock Braking System), Dynamic Stability Control (DSC), and other electronic safety systems to enhance stability and control.
Market Reception & Comparison
The BMW X6 E71 LCI 40d was generally well-received by automotive critics. It was praised for its powerful and efficient diesel engine, comfortable ride, and luxurious interior. However, some critics noted the X6’s polarizing styling and its relatively high price tag. Compared to other diesel-powered SUVs in its class, the X6 40d offered a compelling combination of performance, luxury, and technology. Its fuel economy was competitive, and its reliability was generally considered good, although diesel particulate filter issues could arise with infrequent long-distance driving.
Legacy
The BMW X6 E71 LCI 40d remains a desirable used car today, particularly for buyers seeking a luxurious and capable SUV with a strong diesel engine. The N57 engine is known for its durability, but regular maintenance is crucial to ensure long-term reliability. Common maintenance items include oil changes, filter replacements, and inspection of the diesel particulate filter. The Steptronic transmission is also generally reliable, but fluid changes should be performed according to the manufacturer’s recommendations. The X6 E71 LCI 40d represents a significant milestone in the evolution of the luxury SUV segment, and its blend of performance, efficiency, and style continues to appeal to a wide range of buyers.
