median; 31.3–40.9 across 29 declared configurations
DAF XD 450 FT and Mercedes-Benz Arocs, 330 kW, 4x2 tractor unit side by side
Specification
DAF XD 450 FT
Mercedes-Benz Arocs, 330 kW, 4x2 tractor unit
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2022–2025Registeredcentral 90% of records
2020–2022Registeredcentral 90% of records
Engine power
330 kWDeclared
330 kWDeclared
Engine displacement
10.8 litresDeclared
12.8 litresDeclared
Gearbox
automatedDeclared
automatedDeclared
Emission class
EURO VI ERegistered
EURO VI ARegistered
Gross vehicle weight
19,000–20,500 kgRegisteredmedian 20,500 kg, across 29 type-approval versions and 39 records without one
18,000–20,500 kgRegisteredmedian 18,000 kg, across 2 type-approval versions
Kerb weight
6,785–8,354 kgRegisteredmedian 7,361 kg, over 406 registrations
7,699–7,823 kgRegisteredmedian 7,699 kg, over 2 registrations
Wheelbase
3,600–4,550 mmRegisteredmedian 3,800 mm, over 406 registrations
3,600–3,750 mmRegisteredmedian 3,600 mm, over 2 registrations
Overall length
5,880–6,400 mmRegisteredmedian 6,080 mm, over 406 registrations
6,070–6,220 mmRegisteredmedian 6,070 mm, over 2 registrations
Overall height
2,900–4,000 mmRegisteredmedian 3,650 mm, over 131 registrations
Not recorded
Declared fuel, long haul
28.4 l/100 km Declaredmedian; 25.3–32.3 l/100 km across 147 declared configurations
37.1 l/100 km Declaredmedian; 31.3–40.9 l/100 km across 29 declared configurations
CO₂ per tonne-km
38.5 g Declaredmedian; 34.34–43.82 g
50.29 g Declaredmedian; 42.39–55.4 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The DAF XD 450 FT declared 8.7 l/100 km less (30.6%) 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 10,440 litres a year, or £14,616. A gap this size is outside the 10% tolerance of declared figures.
