AllTruckData
Comparison · 4×2 tractor unit · long haul at 19.3 t

Mercedes-Benz Actros, 265 kW, 4x2 tractor unit (2021–2025) vs Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)

Mercedes-Benz Actros, 265 kW, 4x2 tractor unit (2021–2025)

2021–2025 · 265 kW
29.9l/100 km
median; 28–36 across 51 declared configurations

Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)

2019–2023 · 251 kW
29.6l/100 km
median; 28.4–42.1 across 18 declared configurations
Mercedes-Benz Actros, 265 kW, 4x2 tractor unit (2021–2025) and Volvo FM, 251 kW, 4x2 tractor unit (2019–2023) side by side
SpecificationMercedes-Benz Actros, 265 kW, 4x2 tractor unit (2021–2025)Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2021–2025Registeredcentral 90% of records2019–2023Registeredcentral 90% of records
Engine power265 kWDeclared251 kWDeclared
Engine displacement10.7 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI, EURO VI D, EURO VI ERegisteredEURO 6, EURO VI D, EURO VI ERegistered
Gross vehicle weight18,700–20,500 kgRegisteredmedian 19,000 kg, across 15 type-approval versions and 36 records without one18,200–21,000 kgRegisteredmedian 20,500 kg, across 14 type-approval versions and 2 records without one
Kerb weight6,923–7,694 kgRegisteredmedian 7,403 kg, over 161 registrations6,828–7,650 kgRegisteredmedian 7,050 kg, over 72 registrations
Wheelbase3,700–3,850 mmRegisteredmedian 3,700 mm, over 161 registrations3,600–3,800 mmRegisteredmedian 3,800 mm, over 72 registrations
Overall length5,860–6,310 mmRegisteredmedian 5,910 mm, over 161 registrations5,790–5,990 mmRegisteredmedian 5,990 mm, over 72 registrations
Overall height3,460–4,000 mmRegisteredmedian 3,810 mm, over 160 registrations3,380–3,890 mmRegisteredmedian 3,820 mm, over 18 registrations
Declared fuel, long haul29.9 l/100 km Declaredmedian; 28–36 l/100 km across 51 declared configurations29.6 l/100 km Declaredmedian; 28.4–42.1 l/100 km across 18 declared configurations
CO₂ per tonne-km40.52 g Declaredmedian; 37.9–48.76 g40.17 g Declaredmedian; 38.52–57.1 g

Fuel and CO₂: long haul at 19.3 t, 2022 declarations.

What the numbers actually say

There is 0.3 l/100 km between these two (1%). That is inside the 10% tolerance of declared figures, so on fuel alone neither is the better choice: at 120,000 km a year and an assumed £1.40 a litre the gap would be about 360 litres a year (£504). The declared figures for one of them alone span 13.7 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Actros, 265 kW, 4x2 tractor unit (2021–2025) full specificationFM, 251 kW, 4x2 tractor unit (2019–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Actros, 265 kW, 4x2 tractor unit (2021–2025)35,880 litres
£50,232 at the assumed price
Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)35,520 litres
£49,728 at the assumed price
At 120,000 km a year and an assumed £1.40 a litre; the price is an assumption, not one we track.