Mercedes-Benz C 300 e 4MATIC vs Volvo S90: real-world fuel use

In real life the Mercedes-Benz C 300 e 4MATIC uses 1.0 L/100 km less fuel than the Volvo S90 — about £218 a year at 15,000 km and £1.40/L.
942 cars in the data
Mercedes-Benz C 300 e 4MATIC
7.7×the official figure
Official
0.7
Real world
5.6
0510 L/100 km
Full Mercedes-Benz C 300 e 4MATIC data →
1,844 cars in the data
Volvo S90
5.7×the official figure
Official
1.2
Real world
6.7
0510 L/100 km
Full Volvo S90 data →
Mercedes-Benz C 300 e 4MATICVolvo S90
Real fuel use (L/100 km)5.66.7
Official fuel use (L/100 km)0.71.2
Gap vs official7.7×5.7×
Distance with engine off34%23%
Real CO2 from fuel (g/km)130154
Official electric range (km)10278
Average kerb weight (kg)2,1092,113
Cars in the data9421,844
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 e 4MATIC comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the Mercedes-Benz C 300 e 4MATIC 34% of the time with the engine off, and the Volvo S90 23%. Run the calculator with your own driving.

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