Real MPG: Mercedes-Benz GLC (2015 on)
Excellent refinement and very composed ride quality. Quiet diesel engine. Superb cabin quality. Spacious for rear seat passengers. Capable off-road if need be.
High price. Best ride quality depends on optional air suspension. COMAND system is still frustrating to use. Four-seat accommodation only. No room for a spare wheel. Lots of reported problems with steering at low speeds.
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| GLC 220 d | 47.9 mpg | 40.9–45.6 mpg | - | -* | |
| GLC 220 d Automatic 4Matic | 47.9 mpg | - | 43.7 mpg | 91% | |
| GLC 250 | 37.2 mpg | - | - | - | |
| GLC 250 Automatic 4Matic | 37.2–37.7 mpg | - | 30.5 mpg | 81% | |
| GLC 250 d | 46.3 mpg | - | - | - | |
| GLC 250 d Automatic 4Matic | 46.3 mpg | - | 42.6 mpg | 92% | |
| GLC 300 Automatic | - | 34.4 mpg | - | -* | |
| 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 | - | - | - | |
| GLC 350 d Automatic 4Matic | 47.9 mpg | - | 39.8 mpg | 83% | |
| GLC 43 AMG | 29.1 mpg | 25.9 mpg | 23.6 mpg | 91%* | |
| GLC 63 AMG | 24.4 mpg | 21.2 mpg | - | -* | |
| GLC 63 AMG S | 23.7 mpg | 21.2–21.7 mpg | - | -* |
Read the Honest John review...
Mercedes-Benz GLC (2015 on)
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 on) | 40.5 | avg mpg |
| Jaguar XE (2015 on) | 46.7 | avg mpg |
| Audi A4 Avant (2015 on) | 44.2 | avg mpg |
| BMW X1 (2015 - 2022) | 42.8 | avg mpg |
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