Real MPG: BMW 6 Series Convertible (2011 - 2018) 640i
Submit your Real MPG
35.8–36.2
Official MPG(NEDC)
26.5–32.0
Real MPG
28.9
Real MPGAverage
80%
of Official MPG(NEDC)
More engines available for this model:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| 640d | 49.6–50.4 mpg | - | 36.9 mpg | 74% | |
| 640d Automatic | 48.7–50.4 mpg | - | 37.1 mpg | 75% | |
| 640i Automatic | 35.8–36.7 mpg | - | 28.7 mpg | 79% | |
| 650i | 30.7 mpg | - | - | - | |
| 650i Automatic | 30.7–31.0 mpg | - | 20.8 mpg | 67% |
Read the Honest John review...
BMW 6 Series Convertible (2011 - 2018)
Incredibly smooth and refined. One of the best convertibles at minimising wind turbulance with the top down. Very well equipped as standard. Good ride quality.
Rivals
| BMW 6 Series Convertible (2011 - 2018) | 35.3 | avg mpg |
| Volkswagen Golf Cabriolet (2011 - 2016) | 47.8 | avg mpg |
| Mercedes-Benz E-Class Cabriolet (2010 - 2017) | 40.3 | avg mpg |
| Porsche Boxster (2012 - 2016) | 31.2 | avg mpg |
