Comparison · 6×2 tractor unit · long haul at 19.3 t
DAF XD 450 FTP vs Volvo FM, 315 kW, 6x2 tractor unit
Volvo FM, 315 kW, 6x2 tractor unit
2014–2025 · 315 kW
31.3l/100 km
median; 28.7–33.7 across 11 declared configurations
What the numbers actually say
There is 2.4 l/100 km between these two (8.3%). That is inside the 10% tolerance of declared figures, so on fuel alone neither is the better choice: at 120,000 km a year and an assumed £1.40 a litre the gap would be about 2,880 litres a year (£4,032). The declared figures for one of them alone span 5 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.
Fuel over a year
120,000 km · assumed priceDAF XD 450 FTP34,680 litres
£48,552 at the assumed price
Volvo FM, 315 kW, 6x2 tractor unit37,560 litres
£52,584 at the assumed price
At 120,000 km a year and an assumed £1.40 a litre; the price is an assumption, not one we track.