Real MPG: Mercedes-Benz SL (2008 - 2012)
Great performance from all the engines with SL350 the pick of the bunch, neat folding metal roof.
Expensive with top versions more than £100,000.
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| SL 300 | 30.4 mpg | - | 26.4 mpg | 87% | |
| SL 350 | 29.1 mpg | - | 26.2 mpg | 90% | |
| SL 500 | 24.4 mpg | - | 23.7 mpg | 97% | |
| SL 600 | 20.3 mpg | - | - | - | |
| SL 63 AMG | 20.0 mpg | - | 19.5 mpg | 98% | |
| SL 65 AMG | 20.2 mpg | - | 17.9 mpg | 88% | |
| SL55 AMG | 19.3 mpg | - | 18.3 mpg | 95% |
Read the Honest John review...
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Mercedes-Benz SL (2008 - 2012)
Great performance from all the engines with SL350 the pick of the bunch, neat folding metal roof.
Rivals
| Mercedes-Benz SL (2008 - 2012) | 23.4 | avg mpg |
| Audi TT RS (2009 - 2015) | 31.2 | avg mpg |
| Audi A3 Cabriolet (2008 - 2013) | 43.1 | avg mpg |
| Alfa Romeo Spider (2007 - 2011) | 28.4 | avg mpg |
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