median; 35.3–37.6 across 5 declared configurations
DAF XF 430 FT (2022–2025) and Mercedes-Benz Arocs, 315 kW, 4x2 tractor unit side by side
Specification
DAF XF 430 FT (2022–2025)
Mercedes-Benz Arocs, 315 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
2018–2023Registeredcentral 90% of records
Engine power
315 kWDeclared
315 kWDeclared
Engine displacement
12.9 litresDeclared
10.7 litresDeclared
Gearbox
automatedDeclared
automated, manualDeclared
Emission class
EURO VI ERegistered
EURO 6, EURO VI CRegistered
Gross vehicle weight
19,000–20,500 kgRegisteredmedian 20,500 kg, across 17 type-approval versions and 1 record without one
22,000–23,000 kgRegisteredmedian 22,000 kg, over 2 registrations
Kerb weight
7,129–8,383 kgRegisteredmedian 7,612 kg, over 196 registrations
7,925–13,300 kgRegisteredmedian 7,925 kg, over 2 registrations
Wheelbase
3,600–3,800 mmRegisteredmedian 3,800 mm, over 196 registrations
3,610–3,900 mmRegisteredmedian 3,610 mm, over 2 registrations
Overall length
5,880–6,320 mmRegisteredmedian 6,080 mm, over 196 registrations
6,150–6,460 mmRegisteredmedian 6,150 mm, over 2 registrations
Overall height
3,690–3,850 mmRegisteredmedian 3,690 mm, over 61 registrations
Not recorded
Declared fuel, long haul
26.4 l/100 km Declaredmedian; 25.9–34.4 l/100 km across 132 declared configurations
35.4 l/100 km Declaredmedian; 35.3–37.6 l/100 km across 5 declared configurations
CO₂ per tonne-km
35.75 g Declaredmedian; 35.16–46.7 g
48 g Declaredmedian; 47.92–51 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The DAF XF 430 FT (2022–2025) declared 9 l/100 km less (34%) 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 10,800 litres a year, or £15,120. A gap this size is outside the 10% tolerance of declared figures.
