The BMW X3 (F25 LCI), specifically the 35d variant with the xDrive all-wheel-drive system and Steptronic 8-speed automatic transmission, was produced from 2014 to 2017. This model represents a facelift of the second-generation X3 (F25), introducing updated styling, improved efficiency, and enhanced technology. Positioned as a mid-to-high range offering within the X3 lineup, the 35d catered to buyers seeking a blend of performance, luxury, and fuel economy in a compact SUV package. It served as a key competitor to vehicles like the Audi Q5 and Mercedes-Benz GLK, primarily targeting the European and North American markets.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 (F25 LCI, facelift 2014) |
| Type (Engine) | 35d (313 Hp) xDrive Steptronic |
| Start of production | 2014 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 6.7 l/100 km (35.1 US mpg, 42.2 UK mpg, 14.9 km/l) |
| Fuel consumption (economy) – extra urban | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (economy) – combined | 6 l/100 km (39.2 US mpg, 47.1 UK mpg, 16.7 km/l) |
| CO2 emissions | 157 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.3 sec |
| Acceleration 0 – 62 mph | 5.3 sec |
| Acceleration 0 – 60 mph | 5 sec |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.9 kg/Hp, 168.3 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 338.7 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 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 1860 kg (4100.6 lbs.) |
| Max. weight | 2440 kg (5379.28 lbs.) |
| Max load | 580 kg (1278.68 lbs.) |
| Trunk (boot) space – minimum | 550 l (19.42 cu. ft.) |
| Trunk (boot) space – maximum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 67 l (17.7 US gal | 14.74 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2400 kg (5291.09 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4657 mm (183.35 in.) |
| Width | 1881 mm (74.06 in.) |
| Height | 1661 mm (65.39 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1594 mm (62.76 in.) |
| Rear (Back) track | 1610 mm (63.39 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the X3 35d is the BMW N57D30B engine, a 3.0-liter inline-six cylinder diesel engine. This engine is a member of the N57 family, known for its robust construction and sophisticated technology. It utilizes a common-rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion. The N57D30B is equipped with a twin-turbocharger setup – a low-pressure turbocharger combined with a high-pressure turbocharger – providing both excellent low-end torque and high-end power. The engine also features variable valve timing (VANOS) and variable turbine geometry (VTG) on the turbochargers to further enhance efficiency and responsiveness. Paired with the engine is the ZF 8HP80 8-speed automatic transmission, renowned for its smooth shifts and wide gear ratio spread. This transmission contributes significantly to both fuel economy and performance, allowing the engine to operate in its optimal power band.
Driving Characteristics
The X3 35d with the Steptronic transmission offers a compelling driving experience. The substantial 630 Nm (464 lb-ft) of torque available from 1500-2500 rpm provides effortless acceleration and strong pulling power, making it well-suited for highway cruising and towing. While not as overtly sporty as some of its gasoline-powered siblings, the 35d delivers a refined and capable driving experience. The 8-speed automatic transmission is generally quick and responsive, although some drivers may prefer the more direct control of a manual gearbox. Compared to the X3 28i (gasoline), the 35d offers significantly more torque and a more relaxed driving experience, particularly at highway speeds. Compared to the X3 35i, the diesel offers comparable acceleration but with superior fuel economy. The xDrive all-wheel-drive system provides excellent traction in various weather conditions.
Equipment & Trim Levels
The X3 35d 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 multi-function steering wheel. The LCI facelift brought updated interior trim options and a revised iDrive infotainment system with a larger display screen. Optional extras included navigation, a panoramic sunroof, adaptive cruise control, parking assist, and various driver assistance systems. Trim levels varied by market, but generally, the 35d sat towards the higher end of the X3 range, offering a more luxurious and refined experience than the base models.
Chassis & Braking
The X3 35d utilizes a robust chassis with independent suspension all around – coil springs at the front and a multi-link setup at the rear. This suspension configuration provides a comfortable ride while maintaining good handling characteristics. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and electronic stability control are standard features. Due to the higher weight of the diesel engine, the 35d models often featured slightly stiffer suspension components compared to the lighter gasoline variants.
Market Reception & Comparison
The X3 35d was generally well-received by automotive critics. It was praised for its strong performance, excellent fuel economy, and comfortable ride. However, some reviewers noted that the diesel engine could be slightly noisy compared to gasoline engines. In terms of fuel economy, the 35d significantly outperformed the gasoline-powered X3 models, offering a substantial advantage for drivers covering long distances. Reliability was generally good, although diesel engines can be more susceptible to issues with the fuel injection system and particulate filter over time. Compared to competitors like the Audi Q5 TDI and Mercedes-Benz GLK 250 CDI, the X3 35d offered a compelling combination of performance, luxury, and technology.
Legacy
The N57 engine family, including the N57D30B found in the X3 35d, has proven to be remarkably durable. Well-maintained examples continue to provide reliable service today. However, as with any diesel engine, proper maintenance – including regular oil changes and timely replacement of filters – is crucial. The X3 35d remains a popular choice in the used car market, particularly for buyers seeking a fuel-efficient and capable SUV. The combination of its strong engine, comfortable interior, and all-wheel-drive capability ensures its continued appeal for years to come.
