Real MPG: BMW M3 (2014 - 2018)
Brilliant twin-turbo 3.0-litre straight six engine. Quicker yet more economical than its predecessor. Forgiving ride and phenomenal grip.
Lacks the aural drama of past BMW M3s. Can be a handful in the wet.
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| 3.0 | 31.0–32.1 mpg | - | 28.2 mpg | 89% | |
| 3.0 Competition Pack | 32.1 mpg | - | 21.5 mpg | 67% | |
| 3.0 Competition Pack DCT | 34.0 mpg | - | 22.0 mpg | 65% | |
| 3.0 CS | 33.2 mpg | - | - | - | |
| 3.0 DCT | 34.0 mpg | - | 25.4 mpg | 75% |
Read the Honest John review...
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BMW M3 (2014 - 2018)
Brilliant twin-turbo 3.0-litre straight six engine. Quicker yet more economical than its predecessor. Forgiving ride and phenomenal grip.
Rivals
| BMW M3 (2014 - 2018) | 24.9 | avg mpg |
| Mercedes-Benz CLS (2018 - 2023) | 42.6 | avg mpg |
| Alfa Romeo Giulia (2016 on) | 36.9 | avg mpg |
| BMW M4 (2014 - 2021) | 26.2 | avg mpg |
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