median; 32.2–39.7 across 28 declared configurations
DAF XD 340 FA and Mercedes-Benz Arocs, 260 kW, 4x2 rigid truck side by side
Specification
DAF XD 340 FA
Mercedes-Benz Arocs, 260 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
2020–2023Registeredcentral 90% of records
Engine power
251 kWDeclared
260 kWDeclared
Engine displacement
10.8 litresDeclared
7.7 litresDeclared
Gearbox
automated, automaticDeclared
automated, manualDeclared
Emission class
EURO VI ERegistered
Not recorded
Gross vehicle weight
19,500–21,500 kgRegisteredmedian 20,500 kg, across 2 type-approval versions and 70 records without one
18,000–20,500 kgDeclaredmedian 19,000 kg, across 82 declared configurations
Kerb weight
8,512–14,148 kgRegisteredmedian 10,740 kg, over 72 registrations
Not recorded
Wheelbase
3,800–6,100 mmRegisteredmedian 5,400 mm, over 72 registrations
Not recorded
Overall length
6,810–11,250 mmRegisteredmedian 9,700 mm, over 72 registrations
Not recorded
Overall height
3,020–4,000 mmRegisteredmedian 3,800 mm, over 69 registrations
Not recorded
Declared fuel, long haul
29.5 l/100 km Declaredmedian; 27.3–30.3 l/100 km across 16 declared configurations
34.1 l/100 km Declaredmedian; 32.2–39.7 l/100 km across 28 declared configurations
CO₂ per tonne-km
55.06 g Declaredmedian; 51.06–56.71 g
63.82 g Declaredmedian; 60.22–74.28 g
Fuel and CO₂: long haul at 14 t, 2022 declarations.
What the numbers actually say
The DAF XD 340 FA declared 4.6 l/100 km less (15.5%) 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 5,520 litres a year, or £7,728. A gap this size is outside the 10% tolerance of declared figures.
