Comparison · 6×2 tractor unit · long haul at 19.3 t

DAF XD 450 FTP vs Volvo FM, 315 kW, 6x2 tractor unit

DAF XD 450 FTP

2023–2025 · 330 kW
28.9l/100 km
median; 28.2–32 across 13 declared configurations

Volvo FM, 315 kW, 6x2 tractor unit

2014–2025 · 315 kW
31.3l/100 km
median; 28.7–33.7 across 11 declared configurations
DAF XD 450 FTP and Volvo FM, 315 kW, 6x2 tractor unit side by side
SpecificationDAF XD 450 FTPVolvo FM, 315 kW, 6x2 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×2Declared6×2Declared
Registered new2023–2025Registeredcentral 90% of records2014–2025Registeredcentral 90% of records
Engine power330 kWDeclared315 kWDeclared
Engine displacement10.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI ERegisteredEURO 6, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight23,900 kgRegistered24,000–30,500 kgRegisteredmedian 27,000 kg, across 12 type-approval versions and 2 records without one
Kerb weight7,585–7,945 kgRegisteredmedian 7,710 kg, over 56 registrations8,173–18,105 kgRegisteredmedian 8,548 kg, over 23 registrations
Wheelbase3,850–4,050 mmRegisteredmedian 3,850 mm, over 56 registrations3,900–4,870 mmRegisteredmedian 4,100 mm, over 23 registrations
Overall length6,370–6,570 mmRegisteredmedian 6,370 mm, over 56 registrations6,310–7,600 mmRegisteredmedian 6,510 mm, over 23 registrations
Overall height3,020–3,530 mmRegisteredmedian 3,020 mm, over 20 registrations3,360–3,880 mmRegisteredmedian 3,380 mm, over 6 registrations
Declared fuel, long haul28.9 l/100 km Declaredmedian; 28.2–32 l/100 km across 13 declared configurations31.3 l/100 km Declaredmedian; 28.7–33.7 l/100 km across 11 declared configurations
CO₂ per tonne-km39.12 g Declaredmedian; 38.25–43.4 g42.4 g Declaredmedian; 38.87–45.68 g

Fuel and CO₂: long haul at 19.3 t, 2022 declarations.

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 price
DAF 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.