median; 32.4–42.8 across 31 declared configurations
DAF XG 450 FAR and Volvo FMX, 323 kW, 6x2 rigid truck side by side
Specification
DAF XG 450 FAR
Volvo FMX, 323 kW, 6x2 rigid truck
Vehicle form
Truck (BA)Registered
Truck (BA)Registered
Axle configuration
6×2Declared
6×2Declared
Registered new
2023Registeredcentral 90% of records
2021–2023Registeredcentral 90% of records
Engine power
330 kWDeclared
323 kWDeclared
Engine displacement
10.8 litresDeclared
10.8 litresDeclared
Gearbox
automatedDeclared
automated, automaticDeclared
Emission class
EURO VI ERegistered
Not recorded
Gross vehicle weight
25,700–27,000 kgRegisteredmedian 25,700 kg, over 20 registrations
27,000–33,000 kgDeclaredmedian 28,000 kg, across 89 declared configurations
Kerb weight
10,143–10,397 kgRegisteredmedian 10,143 kg, over 20 registrations
Not recorded
Wheelbase
6,450–6,700 mmRegisteredmedian 6,700 mm, over 20 registrations
Not recorded
Overall length
10,220–10,440 mmRegisteredmedian 10,440 mm, over 20 registrations
Not recorded
Overall height
3,770–4,000 mmRegisteredmedian 3,950 mm, over 20 registrations
Not recorded
Declared fuel, long haul
31 l/100 km Declaredmedian; 29.8–31.5 l/100 km across 19 declared configurations
34.7 l/100 km Declaredmedian; 32.4–42.8 l/100 km across 31 declared configurations
CO₂ per tonne-km
42.05 g Declaredmedian; 40.46–42.8 g
47.11 g Declaredmedian; 43.9–58 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The DAF XG 450 FAR declared 3.7 l/100 km less (11.9%) on the long haul at 19.3 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 4,440 litres a year, or £6,216. A gap this size is outside the 10% tolerance of declared figures.
