Real MPG: Mercedes-Benz CLS (2011 - 2018)
Big CO2 reductions. Four-cylinder CLS 250 CDI available at last. Precisely-built interior. Retains unique style of original CLS. Comes with full LED headlights.
Rear headroom tight for taller passengers. Options expensive.
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| CLS220 d | 57.7 mpg | - | 49.8 mpg | 86% | |
| CLS250 CD | 54.3 mpg | - | 44.1 mpg | 81% | |
| CLS250 CDI | 54.3 mpg | - | 41.9 mpg | 77% | |
| CLS350 | 40.9 mpg | - | 34.3 mpg | 84% | |
| CLS350 CDI | 46.3 mpg | - | 42.1 mpg | 91% | |
| CLS350 d | 51.4 mpg | - | 40.8 mpg | 79% | |
| CLS400 | 37.7–39.2 mpg | - | - | - | |
| CLS500 | 31.4 mpg | - | 28.6 mpg | 91% | |
| CLS63 AMG | 28.5 mpg | - | 19.7 mpg | 69% | |
| CLS63 AMG S | 28.5 mpg | - | - | - |
Read the Honest John review...
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Mercedes-Benz CLS (2011 - 2018)
Big CO2 reductions. Four-cylinder CLS 250 CDI available at last. Precisely-built interior. Retains unique style of original CLS. Comes with full LED headlights.
Rivals
| Mercedes-Benz CLS (2011 - 2018) | 40.3 | avg mpg |
| Infiniti M (2010 - 2013) | 33.7 | avg mpg |
| Audi S6 (2012 - 2018) | 21.4 | avg mpg |
| Audi A6 Allroad (2012 - 2018) | 39.3 | avg mpg |
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