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

Mercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025) vs Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)

Lower declared fuel

Mercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025)

2022–2025 · 350 kW
29.6l/100 km
median; 27.1–39.1 across 2,878 declared configurations

Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)

2021–2023 · 345 kW
34.4l/100 km
median; 32.4–37.5 across 21 declared configurations
Mercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025) and Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023) side by side
SpecificationMercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025)Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2022–2025Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power350 kWDeclared345 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI D, EURO VI ERegisteredNot recorded
Gross vehicle weight18,000–20,500 kgRegisteredmedian 19,000 kg, across 56 type-approval versions and 369 records without one19,500–23,000 kgDeclaredmedian 21,000 kg, across 58 declared configurations
Kerb weight7,346–8,574 kgRegisteredmedian 8,240 kg, over 766 registrationsNot recorded
Wheelbase3,700–4,000 mmRegisteredmedian 3,700 mm, over 766 registrationsNot recorded
Overall length5,860–6,450 mmRegisteredmedian 6,250 mm, over 766 registrationsNot recorded
Overall height3,420–4,000 mmRegisteredmedian 3,960 mm, over 735 registrationsNot recorded
Declared fuel, long haul29.6 l/100 km Declaredmedian; 27.1–39.1 l/100 km across 2,878 declared configurations34.4 l/100 km Declaredmedian; 32.4–37.5 l/100 km across 21 declared configurations
CO₂ per tonne-km40.14 g Declaredmedian; 36.7–53 g46.6 g Declaredmedian; 43.98–50.85 g

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

What the numbers actually say

The Mercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025) declared 4.8 l/100 km less (16.2%) 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 5,760 litres a year, or £8,064. A gap this size is outside the 10% tolerance of declared figures.

Actros, 350 kW, 4x2 tractor unit (2022–2025) full specificationFMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Actros, 350 kW, 4x2 tractor unit (2022–2025)35,520 litres
£49,728 at the assumed price
Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)41,280 litres
£57,792 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.