median; 31.7–40.6 across 12 declared configurations
DAF XG 450 FA and Mercedes-Benz Arocs, 335 kW, 4x2 rigid truck side by side
Specification
DAF XG 450 FA
Mercedes-Benz Arocs, 335 kW, 4x2 rigid truck
Vehicle form
Truck (BA)Registered
Truck (BA)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2022–2026Registeredcentral 90% of records
2020–2023Registeredcentral 90% of records
Engine power
330 kWDeclared
335 kWDeclared
Engine displacement
10.8 litresDeclared
10.7 litresDeclared
Gearbox
automatedDeclared
automatedDeclared
Emission class
EURO VI ERegistered
Not recorded
Gross vehicle weight
19,000–20,500 kgRegisteredmedian 20,500 kg, over 40 registrations
18,000–22,000 kgDeclaredmedian 19,000 kg, across 37 declared configurations
Kerb weight
8,878–12,372 kgRegisteredmedian 9,677 kg, over 40 registrations
Not recorded
Wheelbase
5,200–6,900 mmRegisteredmedian 5,400 mm, over 40 registrations
Not recorded
Overall length
9,000–12,300 mmRegisteredmedian 9,870 mm, over 40 registrations
Not recorded
Overall height
3,780–4,000 mmRegisteredmedian 3,970 mm, over 30 registrations
Not recorded
Declared fuel, long haul
28.6 l/100 km Declaredmedian; 27.6–35.3 l/100 km across 21 declared configurations
33.5 l/100 km Declaredmedian; 31.7–40.6 l/100 km across 12 declared configurations
CO₂ per tonne-km
53.54 g Declaredmedian; 51.54–66.1 g
62.7 g Declaredmedian; 59.24–75.86 g
Fuel and CO₂: long haul at 14 t, 2022 declarations.
What the numbers actually say
The DAF XG 450 FA declared 4.9 l/100 km less (17.1%) 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 5,880 litres a year, or £8,232. A gap this size is outside the 10% tolerance of declared figures.
