median; 27.1–31.9 across 31 declared configurations
DAF CF 450 FT, truck (2019–2020) and DAF XF 450 FA side by side
Specification
DAF CF 450 FT, truck (2019–2020)
DAF XF 450 FA
Vehicle form
Truck (BA)Registered
Truck (BA)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2019–2020Registeredcentral 90% of records
2018–2024Registeredcentral 90% of records
Engine power
330 kWDeclared
330 kWDeclared
Engine displacement
10.8 litresDeclared
10.8 litresDeclared
Gearbox
automatedDeclared
automatedDeclared
Emission class
Not recorded
EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight
19,000–20,500 kgDeclaredmedian 20,500 kg, across 82 declared configurations
18,000–20,500 kgRegisteredmedian 20,500 kg, over 113 registrations
Kerb weight
Not recorded
7,080–12,744 kgRegisteredmedian 10,528 kg, over 113 registrations
Wheelbase
Not recorded
4,700–6,900 mmRegisteredmedian 5,700 mm, over 113 registrations
Overall length
Not recorded
8,400–12,000 mmRegisteredmedian 9,880 mm, over 113 registrations
Overall height
Not recorded
3,350–4,000 mmRegisteredmedian 3,980 mm, over 45 registrations
Declared fuel, long haul
33.8 l/100 km Declaredmedian; 33.8–34.9 l/100 km across 3 declared configurations
28 l/100 km Declaredmedian; 27.1–31.9 l/100 km across 31 declared configurations
CO₂ per tonne-km
45.81 g Declaredmedian; 45.78–47.3 g
52.25 g Declaredmedian; 50.61–59.5 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The DAF XF 450 FA declared 5.8 l/100 km less (20.7%) 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 6,960 litres a year, or £9,744. A gap this size is outside the 10% tolerance of declared figures.
