Real MPG: Mercedes-Benz SLK (2011 - 2016) SLK250 BlueEfficiency
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                                38.7
                            
                            Official MPG(NEDC)
28.0–29.0                            
                            Real MPG
                        
                                28.7
                            
                            Real MPGAverage
                                    74%
                                
                                of Official MPG(NEDC)
More engines available for this model:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| SLK200 BlueEfficiency | 41.5–43.5 mpg | - | 34.5 mpg | 81% | |
| SLK200 BlueEfficiency Automatic | 43.5–47.9 mpg | - | 32.3 mpg | 71% | |
| SLK250 BlueEfficiency Automatic | 42.8 mpg | - | 31.5 mpg | 74% | |
| SLK250 CDI Automatic | 56.5 mpg | - | 46.0 mpg | 81% | |
| SLK250 CDI BlueEfficiency | 70.6 mpg | - | 45.7 mpg | 65% | |
| SLK300 BlueEfficiency | 47.1 mpg | - | - | - | |
| SLK350 BlueEfficency Automatic | 39.8 mpg | - | 34.1 mpg | 86% | |
| SLK55 AMG | 33.6 mpg | - | 28.9 mpg | 86% | 
Read the Honest John review...
Mercedes-Benz SLK (2011 - 2016)
                High quality interior. Three roof options. Offered with 250 CDI diesel engine. Also available with 5.5 litre V8.
            
        
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