Added to its emissions it's possible, in theory, to achieve an average fuel economy figure of 34mpg (or 32.1mpg for cars with a manual gearbox). This is an entirely new engine for the M4 (and M3), and hasn't been used elsewhere in the BMW M range.
Fuel consumption: 9.9-10.2 l/100 km | 24 - 23 US mpg | 29 - 28 UK mpg | 10 - 10 km/l Competition 3.0 (510 Hp) M xDrive M Steptronic 2021 - Maximum speed: 250 km/h | 155.34 mph BMW M4 Competition Coupé: Fuel consumption in l/100 km (combined): 10.2 CO2 emissions in g/km (combined): 234 BMW M4 Coupé: Fuel consumption in l/100 km (combined): 10.8 CO2 emissions in g/km (combined): 248 BMW M440i xDrive Coupé: Fuel consumption in l/100 km (combined): 7.1-6.8 CO2 emissions in g/km (combined): 163-155 .