Citroën C5 X vs Peugeot 408: real-world fuel use
In real life the Peugeot 408 uses 0.3 L/100 km less fuel than the Citroën C5 X — about £69 a year at 15,000 km and £1.40/L.
1,151 cars in the data
Citroën C5 X4.4×the official figure
Official
1.3
Real world
5.6
0510 L/100 km
1,261 cars in the data
Peugeot 4084.5×the official figure
Official
1.2
Real world
5.2
0510 L/100 km
| Citroën C5 X | Peugeot 408 | |
|---|---|---|
| Real fuel use (L/100 km) | 5.6 | 5.2 |
| Official fuel use (L/100 km) | 1.3 | 1.2 |
| Gap vs official | 4.4× | 4.5× |
| Distance with engine off | 25% | 31% |
| Real CO2 from fuel (g/km) | 129 | 121 |
| Official electric range (km) | 60 | 63 |
| Average kerb weight (kg) | 1,797 | 1,778 |
| Cars in the data | 1,151 | 1,261 |
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 Peugeot 408 comes out ahead for the average owner. Your own result depends mostly on how often you charge. Owners drive the Citroën C5 X 25% of the time with the engine off, and the Peugeot 408 31%. Run the calculator with your own driving.