median; 35.2–39.9 across 3 declared configurations
Mercedes-Benz Actros, 310 kW, 6x2 tractor unit and Volvo FM, 308 kW, 6x2 tractor unit side by side
Specification
Mercedes-Benz Actros, 310 kW, 6x2 tractor unit
Volvo FM, 308 kW, 6x2 tractor unit
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
6×2Declared
6×2Declared
Registered new
2013–2022Registeredcentral 90% of records
2013–2019Registeredcentral 90% of records
Engine power
310 kWDeclared
308 kWDeclared
Engine displacement
12.8 litresDeclared
10.8 litresDeclared
Gearbox
automatedDeclared
automatedDeclared
Emission class
EURO 6, EURO VI, EURO VI A, EURO VI C, EURO VI D, EURO VI ERegistered
EURO 5, EURO 6, EURO VI B, EURO VI CRegistered
Gross vehicle weight
23,100–27,000 kgRegisteredmedian 23,800 kg, across 31 type-approval versions and 72 records without one
24,000–28,000 kgRegisteredmedian 24,500 kg, across 8 type-approval versions and 2 records without one
Kerb weight
7,915–9,080 kgRegisteredmedian 8,585 kg, over 191 registrations
7,353–8,600 kgRegisteredmedian 7,961 kg, over 18 registrations
Wheelbase
4,000 mmRegistered
3,800–4,570 mmRegisteredmedian 3,800 mm, over 18 registrations
Overall length
6,250–6,500 mmRegisteredmedian 6,460 mm, over 191 registrations
5,990–7,200 mmRegisteredmedian 5,990 mm, over 18 registrations
Overall height
3,970–3,980 mmRegisteredmedian 3,980 mm, over 10 registrations
Not recorded
Declared fuel, long haul
29.3 l/100 km Declaredmedian; 29.3–37.4 l/100 km across 7 declared configurations
39.2 l/100 km Declaredmedian; 35.2–39.9 l/100 km across 3 declared configurations
CO₂ per tonne-km
39.69 g Declaredmedian; 39.69–50.73 g
53.2 g Declaredmedian; 47.7–54.1 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The Mercedes-Benz Actros, 310 kW, 6x2 tractor unit declared 9.9 l/100 km less (33.7%) 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 11,880 litres a year, or £16,632. A gap this size is outside the 10% tolerance of declared figures.
