Real MPG: BMW M3 (2014 - 2021)
Twin turbo 3.0-litre straight six engine with 430PS. More powerful, quicker yet more economical than before. Impressively forgiving ride. Phenomenal grip in the dry.
Lacks the V8 sound of the previous M3.
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 | - | 25.8 mpg | 82% | |
| 3.0 Competition Pack | 32.1 mpg | - | 21.5 mpg | 67% | |
| 3.0 Competition Pack DCT | 34.0 mpg | - | 21.1 mpg | 62% | |
| 3.0 CS | 33.2 mpg | - | - | - | |
| 3.0 DCT | 34.0 mpg | - | 24.3 mpg | 72% |
Read the Honest John review...
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BMW M3 (2014 - 2021)
Twin turbo 3.0-litre straight six engine with 430PS. More powerful, quicker yet more economical than before. Impressively forgiving ride. Phenomenal grip in the dry.
Rivals
| BMW M3 (2014 - 2021) | 23.5 | avg mpg |
| Audi A4 Avant (2015 on) | 44.2 | avg mpg |
| Infiniti Q50 (2013 - 2020) | 41.3 | avg mpg |
| Mercedes-Benz C-Class (2014 - 2021) | 45.9 | avg mpg |
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