AllTruckData
Comparison · 6×4 tractor unit · long haul at 19.3 t

Mercedes-Benz Actros, 375 kW, 6x4 tractor unit vs Volvo FM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023)

Mercedes-Benz Actros, 375 kW, 6x4 tractor unit

2020–2023 · 375 kW
39.3l/100 km
median; 33.8–43 across 25 declared configurations

Volvo FM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023)

2020–2023 · 345 kW
36.5l/100 km
median; 36.1–37.5 across 4 declared configurations
Mercedes-Benz Actros, 375 kW, 6x4 tractor unit and Volvo FM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023) side by side
SpecificationMercedes-Benz Actros, 375 kW, 6x4 tractor unitVolvo FM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power375 kWDeclared345 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI, EURO VI A, EURO VI ERegisteredEURO VI B, EURO VI DRegistered
Gross vehicle weight33,000 kgRegistered29,000–32,000 kgRegisteredmedian 29,000 kg, across 1 type-approval version and 1 record without one
Kerb weight10,223–10,749 kgRegisteredmedian 10,302 kg, over 4 registrations9,361–20,130 kgRegisteredmedian 9,361 kg, over 2 registrations
Wheelbase4,750 mmRegistered4,770 mmRegistered
Overall length6,910–6,970 mmRegisteredmedian 6,970 mm, over 4 registrations6,940–7,400 mmRegisteredmedian 6,940 mm, over 2 registrations
Overall height3,840 mmRegisteredNot recorded
Declared fuel, long haul39.3 l/100 km Declaredmedian; 33.8–43 l/100 km across 25 declared configurations36.5 l/100 km Declaredmedian; 36.1–37.5 l/100 km across 4 declared configurations
CO₂ per tonne-km53.34 g Declaredmedian; 45.86–58.25 g49.4 g Declaredmedian; 48.97–50.81 g

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

What the numbers actually say

There is 2.8 l/100 km between these two (7.6%). 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 3,360 litres a year (£4,704). The declared figures for one of them alone span 9.2 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Actros, 375 kW, 6x4 tractor unit full specificationFM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Actros, 375 kW, 6x4 tractor unit47,160 litres
£66,024 at the assumed price
Volvo FM, 345 kW, 6x4 tractor unit, 12.8 L (2020–2023)43,800 litres
£61,320 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.