Mercedes-Benz S 450 e vs Porsche Panamera 4S E-Hybrid: real-world fuel use
In real life the Mercedes-Benz S 450 e uses 3.5 L/100 km less fuel than the Porsche Panamera 4S E-Hybrid — about £743 a year at 15,000 km and £1.40/L.
214 cars in the data
Mercedes-Benz S 450 e9.5×the official figure
Official
0.7
Real world
6.2
0715 L/100 km
1,488 cars in the data
Porsche Panamera 4S E-Hybrid4.0×the official figure
Official
2.4
Real world
9.8
0715 L/100 km
| Mercedes-Benz S 450 e | Porsche Panamera 4S E-Hybrid | |
|---|---|---|
| Real fuel use (L/100 km) | 6.2 | 9.8 |
| Official fuel use (L/100 km) | 0.7 | 2.4 |
| Gap vs official | 9.5× | 4.0× |
| Distance with engine off | 31% | 43% |
| Real CO2 from fuel (g/km) | 144 | 226 |
| Official electric range (km) | 111 | 55 |
| Average kerb weight (kg) | 2,402 | 2,312 |
| Cars in the data | 214 | 1,488 |
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 450 e comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the Mercedes-Benz S 450 e 31% of the time with the engine off, and the Porsche Panamera 4S E-Hybrid 43%. Run the calculator with your own driving.