BMW 550e xDrive vs Mercedes-Benz C 300 de 4MATIC: real-world fuel use
In real life the Mercedes-Benz C 300 de 4MATIC uses 2.6 L/100 km less fuel than the BMW 550e xDrive — about £546 a year at 15,000 km and £1.40/L.
1,500 cars in the data
BMW 550e xDrive8.0×the official figure
Official
0.9
Real world
7.1
0510 L/100 km
1,644 cars in the data
Mercedes-Benz C 300 de 4MATIC8.9×the official figure
Official
0.5
Real world
4.5
0510 L/100 km
| BMW 550e xDrive | Mercedes-Benz C 300 de 4MATIC | |
|---|---|---|
| Real fuel use (L/100 km) | 7.1 | 4.5 |
| Official fuel use (L/100 km) | 0.9 | 0.5 |
| Gap vs official | 8.0× | 8.9× |
| Distance with engine off | 29% | 30% |
| Real CO2 from fuel (g/km) | 164 | 119 |
| Official electric range (km) | 87 | 105 |
| Average kerb weight (kg) | 2,232 | 2,242 |
| Cars in the data | 1,500 | 1,644 |
Bold = better. Source: EEA OBFCM real-world data, reporting year 2024, CC BY 4.0.
Which one is cheaper to run?
On fuel alone, the Mercedes-Benz C 300 de 4MATIC comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the BMW 550e xDrive 29% of the time with the engine off, and the Mercedes-Benz C 300 de 4MATIC 30%. Run the calculator with your own driving.