BMW M5 vs Porsche Cayenne Turbo S E-Hybrid: real-world fuel use
In real life the Porsche Cayenne Turbo S E-Hybrid uses 0.7 L/100 km less fuel than the BMW M5 — about £139 a year at 15,000 km and £1.40/L.
474 cars in the data
BMW M57.8×the official figure
Official
1.6
Real world
12.8
0715 L/100 km
890 cars in the data
Porsche Cayenne Turbo S E-Hybrid3.2×the official figure
Official
3.8
Real world
12.2
0715 L/100 km
| BMW M5 | Porsche Cayenne Turbo S E-Hybrid | |
|---|---|---|
| Real fuel use (L/100 km) | 12.8 | 12.2 |
| Official fuel use (L/100 km) | 1.6 | 3.8 |
| Gap vs official | 7.8× | 3.2× |
| Distance with engine off | — | 18% |
| Real CO2 from fuel (g/km) | 296 | 281 |
| Official electric range (km) | 68 | 43 |
| Average kerb weight (kg) | 2,516 | 2,592 |
| Cars in the data | 474 | 890 |
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 Porsche Cayenne Turbo S E-Hybrid comes out ahead for the average owner. Your own result depends mostly on how often you charge. Run the calculator with your own driving.