BMW 3-SERIE vs DS 9: real-world fuel use

In real life the DS 9 uses 0.2 L/100 km less fuel than the BMW 3-SERIE — about £32 a year at 15,000 km and £1.40/L.
262 cars in the data
BMW 3-SERIE
4.7×the official figure
Official
1.4
Real world
6.5
0510 L/100 km
Full BMW 3-SERIE data →
397 cars in the data
DS 9
4.3×the official figure
Official
1.5
Real world
6.4
0510 L/100 km
Full DS 9 data →
BMW 3-SERIEDS 9
Real fuel use (L/100 km)6.56.4
Official fuel use (L/100 km)1.41.5
Gap vs official4.7×4.3×
Distance with engine off16%21%
Real CO2 from fuel (g/km)151148
Official electric range (km)6057
Average kerb weight (kg)1,9341,940
Cars in the data262397
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 DS 9 comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the BMW 3-SERIE 16% of the time with the engine off, and the DS 9 21%. Run the calculator with your own driving.

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