median; 31.3–40.9 across 29 declared configurations
DAF XG+ 450 FT and Mercedes-Benz Arocs, 330 kW, 4x2 tractor unit side by side
Specification
DAF XG+ 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 8 type-approval versions and 10 records without one
18,000–20,500 kgRegisteredmedian 18,000 kg, across 2 type-approval versions
Kerb weight
7,536–8,360 kgRegisteredmedian 8,168 kg, over 102 registrations
7,699–7,823 kgRegisteredmedian 7,699 kg, over 2 registrations
Wheelbase
4,000 mmRegistered
3,600–3,750 mmRegisteredmedian 3,600 mm, over 2 registrations
Overall length
6,280–6,520 mmRegisteredmedian 6,520 mm, over 102 registrations
6,070–6,220 mmRegisteredmedian 6,070 mm, over 2 registrations
Overall height
3,850–4,000 mmRegisteredmedian 3,980 mm, over 26 registrations
Not recorded
Declared fuel, long haul
28.6 l/100 km Declaredmedian; 26.1–29 l/100 km across 56 declared configurations
37.1 l/100 km Declaredmedian; 31.3–40.9 l/100 km across 29 declared configurations
CO₂ per tonne-km
38.7 g Declaredmedian; 35.4–39.3 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 XG+ 450 FT declared 8.5 l/100 km less (29.7%) 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 10,200 litres a year, or £14,280. A gap this size is outside the 10% tolerance of declared figures.
