The BMW X3 (F25) 28i xDrive Steptronic, produced from 2012 to 2014, represents a key iteration of BMW’s compact luxury SUV. Positioned as a mid-range offering within the F25 X3 lineup, it bridged the gap between the entry-level 20i models and the performance-oriented 35i variants. This model was primarily aimed at buyers seeking a balance of performance, efficiency, and all-weather capability, particularly in markets where all-wheel drive was highly valued. The F25 generation X3 marked a significant shift for the model, growing in size and offering a more refined driving experience compared to its predecessor.
Technical Specifications
| Brand | BMW |
| Model | X3 |
| Generation | X3 (F25) |
| Type (Engine) | 28i (245 Hp) xDrive Steptronic |
| Start of production | 2012 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.9 l/100 km (26.4 US mpg, 31.7 UK mpg, 11.2 km/l) |
| Fuel consumption (extra urban) | 6.7 l/100 km (35.1 US mpg, 42.2 UK mpg, 14.9 km/l) |
| Fuel consumption (combined) | 7.5 l/100 km (31.4 US mpg, 37.7 UK mpg, 13.3 km/l) |
| CO2 emissions | 175 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.7 sec |
| Acceleration 0 – 62 mph | 6.7 sec |
| Acceleration 0 – 60 mph | 6.4 sec |
| Maximum speed | 230 km/h (142.92 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7 kg/Hp, 142.4 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 203.5 Nm/tonne |
| Power | 245 Hp @ 5000 rpm |
| Power per litre | 122.7 Hp/l |
| Torque | 350 Nm @ 1250-4800 rpm (258.15 lb.-ft. @ 1250-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N20B20A |
| Engine displacement | 1997 cm3 (121.86 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90.1 mm (3.55 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2310 kg (5092.68 lbs.) |
| Max load | 590 kg (1300.73 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 | 4648 mm (182.99 in.) |
| Width | 1881 mm (74.06 in.) |
| Height | 1661 mm (65.39 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1616 mm (63.62 in.) |
| Rear (Back) track | 1632 mm (64.25 in.) |
| Ride height (ground clearance) | 212 mm (8.35 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 ft.) |
| Approach angle | 25.7° |
| Departure angle | 22.6° |
| Ramp-over (brakeover) angle | 19.4° |
| 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 |
| 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 | 225/60 R17 99V |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the X3 28i is the BMW N20B20A 2.0-liter inline-four cylinder engine. This engine is a member of BMW’s highly regarded modular engine family, known for its efficiency and performance. The N20 utilizes direct fuel injection, a twin-scroll turbocharger, and variable valve timing (VANOS) and valve lift (Valvetronic) technologies. These features work in concert to deliver a broad torque curve and responsive power delivery. The engine produces 245 horsepower at 5,000 rpm and 350 Nm (258 lb-ft) of torque between 1,250 and 4,800 rpm. The engine’s longitudinal mounting and all-wheel-drive system (xDrive) contribute to balanced handling. The Steptronic 8-speed automatic transmission is a crucial component, offering smooth shifts and contributing to fuel efficiency. This transmission features adaptive learning, adjusting shift points based on driving style.
Driving Characteristics
The X3 28i xDrive Steptronic delivers a comfortable and capable driving experience. While not as overtly sporty as the 35i model, the 2.0-liter turbo engine provides ample power for everyday driving and highway cruising. The 8-speed automatic transmission is well-tuned, offering quick and seamless gear changes. Acceleration from 0 to 60 mph takes approximately 6.4 seconds. The xDrive all-wheel-drive system provides excellent traction in various weather conditions, enhancing stability and confidence. Compared to the manual transmission versions, the Steptronic automatic prioritizes ease of use and fuel economy over outright performance. The gear ratios are optimized for efficiency, resulting in slightly slower acceleration than the manual, but a more relaxed driving experience.
Equipment & Trim Levels
The X3 28i xDrive Steptronic typically came standard with features such as leatherette upholstery, automatic climate control, a BMW iDrive infotainment system with a 6.5-inch display, and power-adjustable front seats. Standard safety features included ABS, stability control, and multiple airbags. Optional extras included a panoramic sunroof, navigation system, premium sound system, heated front seats, and a rearview camera. Trim levels were relatively simple, with most options available as individual add-ons rather than distinct packages. The interior design was functional and well-built, reflecting BMW’s commitment to quality.
Chassis & Braking
The F25 X3 features a robust chassis with MacPherson strut front suspension and a multi-link rear suspension. This setup provides a good balance of ride comfort and handling precision. The X3 28i typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control system (DSC) works in conjunction with the ABS to enhance braking performance and maintain control during emergency maneuvers. The suspension tuning was geared towards comfort, with a focus on absorbing road imperfections. Stabilizer bars were used front and rear to minimize body roll during cornering.
Market Reception & Comparison
The X3 28i xDrive Steptronic was generally well-received by automotive critics. It was praised for its comfortable ride, spacious interior, and efficient engine. However, some reviewers noted that the 2.0-liter engine lacked the punch of the 3.0-liter inline-six found in the 35i model. Compared to the X3 35i, the 28i offered better fuel economy but less exhilarating performance. Against competitors like the Audi Q5 and Acura RDX, the X3 28i held its own, offering a compelling combination of luxury, performance, and practicality. Fuel economy figures of around 31.4 US mpg combined were competitive for its class.
Legacy
The N20 engine, while generally reliable, has been known to exhibit some issues, including oil leaks and timing chain wear, particularly with higher mileage. The 8-speed Steptronic transmission has also proven to be relatively durable, but regular maintenance, including fluid changes, is crucial for long-term reliability. Today, the F25 X3 28i xDrive Steptronic represents a good value in the used luxury SUV market. Its combination of practicality, comfort, and all-wheel-drive capability makes it a popular choice for buyers seeking a well-rounded vehicle. Properly maintained examples continue to provide years of reliable service, and parts availability remains good.
