Real MPG: Mercedes-Benz C-Class Cabriolet (2016 - 2024)
Select engine for more Real MPG information:
| Engine | Official MPG (NEDC) | Official MPG (WLTP) | Real MPG Avg. | Real MPG % | |
| AMG C 43 | 29.1–34.0 mpg | 28.0 mpg | 24.8 mpg | 89%* | |
| AMG C 63 | 27.2–31.7 mpg | 24.4 mpg | - | -* | |
| AMG C 63 S | 27.2–31.7 mpg | 24.4–25.0 mpg | 24.7 mpg | 100%* | |
| C 180 | 43.5 mpg | 35.3 mpg | - | -* | |
| C 180 Automatic | 43.5 mpg | - | - | - | |
| C 200 1.5 4Matic Automatic | - | 40.9 mpg | - | -* | |
| C 200 1.5 Automatic | 44.1 mpg | - | 34.4 mpg | 78% | |
| C 200 2.0 | 46.3–47.1 mpg | - | - | - | |
| C 200 2.0 Automatic | 44.8–45.6 mpg | - | 36.1 mpg | 80% | |
| C 200 EQ Boost | - | 38.7 mpg | - | -* | |
| C 220 d 2.0 4Matic Automatic | 54.3 mpg | - | 39.0 mpg | 72% | |
| C 220 d 2.0 Automatic | 58.9 mpg | - | - | - | |
| C 220 d 2.1 | 62.8 mpg | - | - | - | |
| C 220 d 2.1 4Matic Automatic | 29.1–56.5 mpg | - | 35.5 mpg | 83% | |
| C 220 d 2.1 Automatic | 57.7–61.4 mpg | - | 49.9 mpg | 84% | |
| C 220 d Automatic | - | 52.3 mpg | - | -* | |
| C 250 d 2.1 Automatic | 57.7 mpg | - | - | - | |
| C 250 d Automatic | 57.7–61.4 mpg | - | 43.1 mpg | 72% | |
| C 300 Automatic | 40.9–42.2 mpg | - | 29.3 mpg | 71% | |
| C 300 d Automatic | 54.3 mpg | 48.7 mpg | 41.1 mpg | 84%* | |
| C 300 EQ Boost | - | 37.2 mpg | - | -* | 
Read the Honest John review...
Mercedes-Benz C-Class Cabriolet (2016 - 2024)
                Refined and relaxing to drive, relatively affordable pricing and generous equipment, interior design matches classy exterior with plenty of neat features.
            
        Rivals
| Mercedes-Benz C-Class Cabriolet (2016 - 2024) | 37.4 | avg mpg | 
| MINI Convertible (2016 - 2024) | 42.5 | avg mpg | 
| Abarth 124 Spider (2016 - 2019) | 37.1 | avg mpg | 
| Ford Mustang (2015 - 2022) | 25.0 | avg mpg | 
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