MPG and running costs
Considering its selection of diesel engines, the X4 is appropriately frugal. BMW claims the four-cylinder manual X4 achieves 52.3mpg on a combined run, while the automatic is slightly better with a consumption figure of 54.3mpg.
Predictably the 3-litre six-cylinder models aren’t as economical, but the claimed figures are still impressive. The xDrive30d’s combined MPG figure is 47.9 while the 35d is only slightly worse with 47.1mpg.
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As with all manufacturer claimed figures, you should expect to achieve worse. When driven enthusiastically, the xDrive30d we tested averaged 32-34mpg; nowhere near BMW’s economy figures but still not bad for a 1820kg four-wheel drive SUV.
This weight might not put too large a dent in the X4’s MPG figure, but it will put a lot of strain on the brakes if driven hard regularly. So, although the X4 isn’t an all-out performance car and shouldn’t cost a huge amount to run, we expect brake pads to need relatively frequent attention.