Comparison · 4×2 lorry · long haul at 14 t

DAF XF 450 FA vs Volvo FM, 323 kW, 4x2 rigid lorry

Lower declared fuel

DAF XF 450 FA

2018–2024 · 330 kW
28l/100 km
median; 27.1–31.9 across 31 declared configurations

Volvo FM, 323 kW, 4x2 rigid lorry

2019–2023 · 323 kW
30.9l/100 km
median; 28.6–42 across 27 declared configurations
DAF XF 450 FA and Volvo FM, 323 kW, 4x2 rigid lorry side by side
SpecificationDAF XF 450 FAVolvo FM, 323 kW, 4x2 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2018–2024Registeredcentral 90% of records2019–2023Registeredcentral 90% of records
Engine power330 kWDeclared323 kWDeclared
Engine displacement10.8 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomated, automaticDeclared
Emission classEURO VI C, EURO VI D, EURO VI ERegisteredNot recorded
Gross vehicle weight18,000–20,500 kgRegisteredmedian 20,500 kg, over 113 registrations19,500–23,000 kgDeclaredmedian 22,000 kg, across 133 declared configurations
Kerb weight7,080–12,744 kgRegisteredmedian 10,528 kg, over 113 registrationsNot recorded
Wheelbase4,700–6,900 mmRegisteredmedian 5,700 mm, over 113 registrationsNot recorded
Overall length8,400–12,000 mmRegisteredmedian 9,880 mm, over 113 registrationsNot recorded
Overall height3,350–4,000 mmRegisteredmedian 3,980 mm, over 45 registrationsNot recorded
Declared fuel, long haul28 l/100 km Declaredmedian; 27.1–31.9 l/100 km across 31 declared configurations30.9 l/100 km Declaredmedian; 28.6–42 l/100 km across 27 declared configurations
CO₂ per tonne-km52.25 g Declaredmedian; 50.61–59.5 g57.71 g Declaredmedian; 53.5–78.6 g

Fuel and CO₂: long haul at 14 t, 2022 declarations.

What the numbers actually say

The DAF XF 450 FA declared 2.9 l/100 km less (10.3%) on the long haul at 14 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 3,480 litres a year, or £4,872. A gap this size is outside the 10% tolerance of declared figures.

Fuel over a year

120,000 km · assumed price
DAF XF 450 FA33,600 litres
£47,040 at the assumed price
Volvo FM, 323 kW, 4x2 rigid lorry37,080 litres
£51,912 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.