BMW X4 Service Costs

The F26 petrol range offered turbocharged four-cylinder and six-cylinder options. The xDrive20i (2014–2018) used the N20B20 2.0-litre turbocharged four-cylinder producing 184 hp and 270 Nm — adequate for everyday driving but not the natural choice for a coupé-SUV. The xDrive28i (2014–2018) used a higher-output N20 variant producing 245 hp and 350 Nm — the more rewarding four-cylinder choice, with strong mid-range response and sufficient performance for spirited driving. The xDrive35i (2014–2016) featured the N55B30 3.0-litre turbocharged inline-six producing 306 hp and 400 Nm — smooth, powerful, and well-suited to the X4's sporting character. From 2016, selected markets received the M40i with the newer B58B30 3.0-litre turbo inline-six producing 360 hp and 500 Nm. The N20 four-cylinder requires attention to the oil pump chain, high-pressure fuel pump, and VANOS system beyond 100,000 miles; the N55 inline-six is robust but benefits from valve-cover gasket and charge-pipe monitoring at higher mileages.

Diesel variants were the most popular in the UK market. The xDrive20d (2014–2018) used the N47D20 2.0-litre turbocharged four-cylinder producing 184 hp and 380 Nm on early models, transitioning to the B47D20 producing 190 hp and 400 Nm from 2015 onwards — the B47 bringing improved refinement, lower emissions, and crucially, a front-mounted timing chain replacing the N47's problematic rear-mounted design. The xDrive30d (2014–2018) employed the N57D30 3.0-litre turbocharged inline-six producing 258 hp and 560 Nm — effortless torque and refined cruising ability, making it the ideal long-distance engine in the range. The xDrive35d (2014–2016, selected markets) used a twin-turbo N57 variant producing 313 hp and 630 Nm. Early xDrive20d models with the N47 engine require timing-chain inspection beyond 80,000 miles; the B47 replacement resolved this issue. The N57 inline-six diesel is exceptionally robust and long-lived, with many examples exceeding 200,000 miles on proper maintenance.

Hybrid and electric variants were not available for the F26 X4. BMW's electrification of the mid-size SUV range did not begin until the second-generation G02 X4 and the parallel iX3 programme. The F26's rear-wheel-drive-based platform was not designed to accommodate hybrid or electric powertrains.

The G02 petrol range moved to BMW's latest modular engine families. The xDrive20i (2018–present) uses the B48B20 2.0-litre turbocharged four-cylinder producing 184 hp and 290 Nm — a smooth, efficient base petrol with adequate performance for daily driving. The xDrive30i (2018–present) uses a higher-output B48 variant producing 252 hp and 350 Nm — the more rewarding four-cylinder, with strong mid-range response and refined motorway cruising. The M40i (2018–present) features the B58B30 3.0-litre turbocharged inline-six producing 360 hp and 500 Nm — smooth, powerful, and widely regarded as one of BMW's finest modern engines. At the top of the range, the X4 M and X4 M Competition (F98, 2019–present) deploy the S58B30 3.0-litre twin-turbo inline-six producing 480 hp (standard) or 510 hp (Competition) and 600 Nm — genuine sports-car performance in an SUV body. The B48 is well-proven and durable; the B58 is exceptionally refined with excellent long-term reliability; the S58 demands specialist M-car knowledge and premium maintenance.

Diesel variants remain popular in the UK and dominate fleet sales. The xDrive20d (2018–present) uses the B47D20 2.0-litre turbocharged four-cylinder producing 190 hp and 400 Nm — the sweet spot of the G02 range, combining strong low-end torque with excellent fuel economy (45+ mpg achievable). The xDrive30d (2018–present) employs the B57D30 3.0-litre turbocharged inline-six producing 265 hp and 620 Nm — effortless performance with exceptional refinement, making it the ideal long-distance cruiser. The M40d (2018–2021) used a higher-output B57 variant producing 340 hp and 700 Nm — diesel performance rivalling many petrol sports cars. The B47 four-cylinder diesel is reliable with a front-mounted timing chain and no repeat of the N47's rear-chain issues. The B57 inline-six is BMW's finest modern diesel — smooth, powerful, and durable. DPF health, AdBlue replenishment, and quality fuel are the primary diesel service considerations across all variants.

Hybrid and electric variants are not available for the G02 X4. BMW's electrification of the mid-size SUV coupé segment has focused on other platforms — the iX3 and iX serve the electric market, whilst plug-in hybrid options are concentrated in the X3 and X5 ranges. The G02's CLAR platform is capable of accommodating hybrid powertrains, but market positioning has prioritised combustion and M-performance variants for the X4.