Real MPG: Mercedes-Benz GLC (2015 - 2021) GLC 43 AMG
                
        Submit your Real MPG
        
    
                    
                                29.1
                            
                            Official MPG(NEDC)
                                    25.9
                                
                                Official MPG(WLTP)
18.0–28.9                            
                            Real MPG
                        
                                23.5
                            
                            Real MPGAverage
                                    81%
                                
                                of Official MPG(NEDC)
                                    91%
                                
                                of Official MPG(WLTP)
More engines available for this model:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| GLC 220 d | 47.9 mpg | 40.9–45.6 mpg | 36.5 mpg | 84%* | |
| GLC 220 d Automatic 4Matic | 47.9 mpg | - | 43.1 mpg | 90% | |
| GLC 250 | 37.2 mpg | - | 29.8 mpg | 80% | |
| GLC 250 Automatic 4Matic | 37.2–37.7 mpg | - | 29.8 mpg | 80% | |
| GLC 250 d | 46.3 mpg | - | 34.1 mpg | 74% | |
| GLC 250 d Automatic 4Matic | 46.3 mpg | - | 41.4 mpg | 89% | |
| GLC 300 Automatic | - | 34.4 mpg | 31.4 mpg | 91%* | |
| GLC 300 d | - | 39.2 mpg | - | -* | |
| GLC 300 de | - | 148.7 mpg | - | -* | |
| GLC 300 e | - | 128.4 mpg | - | -* | |
| GLC 350 d | 41.5–47.9 mpg | - | 37.1 mpg | 83% | |
| GLC 350 d Automatic 4Matic | 47.9 mpg | - | 36.0 mpg | 75% | |
| GLC 63 AMG | 24.4 mpg | 21.2 mpg | 19.5 mpg | 92%* | |
| GLC 63 AMG S | 23.7 mpg | 21.2–21.7 mpg | 18.0 mpg | 84%* | 
Read the Honest John review...
Mercedes-Benz GLC (2015 - 2021)
                Excellent refinement and very composed ride quality. Quiet diesel engine. Superb cabin quality. Spacious for rear seat passengers. Capable off-road if need be. 
            
        Rivals
| Mercedes-Benz GLC (2015 - 2021) | 38.5 | avg mpg | 
| Hyundai Ioniq (2016 - 2022) | 62.6 | avg mpg | 
| Volkswagen Golf GTE (2015 - 2020) | 75.8 | avg mpg | 
| Audi Q7 (2015 on) | 35.3 | avg mpg | 
