BMW 745Le xDrive vs Mercedes-Benz S 580 e: real-world fuel use
In real life the Mercedes-Benz S 580 e uses 1.3 L/100 km less fuel than the BMW 745Le xDrive — about £281 a year at 15,000 km and £1.40/L.
279 cars in the data
BMW 745Le xDrive3.7×the official figure
Official
2.3
Real world
8.5
0510 L/100 km
1,509 cars in the data
Mercedes-Benz S 580 e9.9×the official figure
Official
0.7
Real world
7.2
0510 L/100 km
| BMW 745Le xDrive | Mercedes-Benz S 580 e | |
|---|---|---|
| Real fuel use (L/100 km) | 8.5 | 7.2 |
| Official fuel use (L/100 km) | 2.3 | 0.7 |
| Gap vs official | 3.7× | 9.9× |
| Distance with engine off | 18% | 29% |
| Real CO2 from fuel (g/km) | 196 | 165 |
| Official electric range (km) | 47 | 106 |
| Average kerb weight (kg) | 2,180 | 2,391 |
| Cars in the data | 279 | 1,509 |
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 S 580 e comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the BMW 745Le xDrive 18% of the time with the engine off, and the Mercedes-Benz S 580 e 29%. Run the calculator with your own driving.