median; 31.6–40.7 across 14 declared configurations
DAF XD 340 FA and Mercedes-Benz Arocs, 240 kW, 4x2 rigid truck side by side
Specification
DAF XD 340 FA
Mercedes-Benz Arocs, 240 kW, 4x2 rigid truck
Vehicle form
Truck (BA)Registered
Truck (BA)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2023–2025Registeredcentral 90% of records
2017–2023Registeredcentral 90% of records
Engine power
251 kWDeclared
240 kWDeclared
Engine displacement
10.8 litresDeclared
10.7 litresDeclared
Gearbox
automated, automaticDeclared
automated, manualDeclared
Emission class
EURO VI ERegistered
EURO VI A, EURO VI C, EURO VI ERegistered
Gross vehicle weight
19,500–21,500 kgRegisteredmedian 20,500 kg, across 2 type-approval versions and 70 records without one
18,000–21,500 kgRegisteredmedian 19,500 kg, over 8 registrations
Kerb weight
8,512–14,148 kgRegisteredmedian 10,740 kg, over 72 registrations
10,805–18,600 kgRegisteredmedian 14,530 kg, over 8 registrations
Wheelbase
3,800–6,100 mmRegisteredmedian 5,400 mm, over 72 registrations
3,600–4,500 mmRegisteredmedian 4,200 mm, over 8 registrations
Overall length
6,810–11,250 mmRegisteredmedian 9,700 mm, over 72 registrations
6,750–8,990 mmRegisteredmedian 7,850 mm, over 8 registrations
Overall height
3,020–4,000 mmRegisteredmedian 3,800 mm, over 69 registrations
3,600 mmRegistered
Declared fuel, long haul
29.5 l/100 km Declaredmedian; 27.3–30.3 l/100 km across 16 declared configurations
33.6 l/100 km Declaredmedian; 31.6–40.7 l/100 km across 14 declared configurations
CO₂ per tonne-km
55.06 g Declaredmedian; 51.06–56.71 g
62.9 g Declaredmedian; 59.06–76 g
Fuel and CO₂: long haul at 14 t, 2022 declarations.
What the numbers actually say
The DAF XD 340 FA declared 4.1 l/100 km less (13.8%) on the long haul at 14 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 4,920 litres a year, or £6,888. A gap this size is outside the 10% tolerance of declared figures.
