median; 28.7–33.7 across 11 declared configurations
DAF XF 450 FTG, tractor unit (2018–2023) and Volvo FM, 315 kW, 6x2 tractor unit side by side
Specification
DAF XF 450 FTG, tractor unit (2018–2023)
Volvo FM, 315 kW, 6x2 tractor unit
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
6×2Declared
6×2Declared
Registered new
2018–2023Registeredcentral 90% of records
2014–2025Registeredcentral 90% of records
Engine power
330 kWDeclared
315 kWDeclared
Engine displacement
10.8 litresDeclared
12.8 litresDeclared
Gearbox
automatedDeclared
automatedDeclared
Emission class
EURO VI C, EURO VI D, EURO VI ERegistered
EURO 6, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight
26,500–28,000 kgRegisteredmedian 27,000 kg, across 13 type-approval versions and 2 records without one
24,000–30,500 kgRegisteredmedian 27,000 kg, across 12 type-approval versions and 2 records without one
Kerb weight
8,066–9,214 kgRegisteredmedian 8,656 kg, over 146 registrations
8,173–18,105 kgRegisteredmedian 8,548 kg, over 23 registrations
Wheelbase
3,950–4,150 mmRegisteredmedian 3,950 mm, over 146 registrations
3,900–4,870 mmRegisteredmedian 4,100 mm, over 23 registrations
Overall length
6,260–6,670 mmRegisteredmedian 6,310 mm, over 146 registrations
6,310–7,600 mmRegisteredmedian 6,510 mm, over 23 registrations
Overall height
3,800–3,930 mmRegisteredmedian 3,850 mm, over 6 registrations
3,360–3,880 mmRegisteredmedian 3,380 mm, over 6 registrations
Declared fuel, long haul
28.4 l/100 km Declaredmedian; 28–30.7 l/100 km across 14 declared configurations
31.3 l/100 km Declaredmedian; 28.7–33.7 l/100 km across 11 declared configurations
CO₂ per tonne-km
38.47 g Declaredmedian; 37.91–41.69 g
42.4 g Declaredmedian; 38.87–45.68 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The DAF XF 450 FTG, tractor unit (2018–2023) declared 2.9 l/100 km less (10.2%) 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 3,480 litres a year, or £4,872. A gap this size is outside the 10% tolerance of declared figures.
