BYD Seal U DM-i vs Hyundai Santa Fe: real-world fuel use

In real life the BYD Seal U DM-i uses 1.3 L/100 km less fuel than the Hyundai Santa Fe — about £279 a year at 15,000 km and £1.40/L.
2,860 cars in the data
BYD Seal U DM-i
4.9×the official figure
Official
1.0
Real world
4.8
0510 L/100 km
Full BYD Seal U DM-i data →
408 cars in the data
Hyundai Santa Fe
3.8×the official figure
Official
1.6
Real world
6.1
0510 L/100 km
Full Hyundai Santa Fe data →
BYD Seal U DM-iHyundai Santa Fe
Real fuel use (L/100 km)4.86.1
Official fuel use (L/100 km)1.01.6
Gap vs official4.9×3.8×
Distance with engine off27%22%
Real CO2 from fuel (g/km)111142
Official electric range (km)7558
Average kerb weight (kg)2,0722,062
Cars in the data2,860408
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 BYD Seal U DM-i comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the BYD Seal U DM-i 27% of the time with the engine off, and the Hyundai Santa Fe 22%. Run the calculator with your own driving.

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