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

Mercedes-Benz Actros, 425 kW, 6x4 tractor unit vs Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit

Mercedes-Benz Actros, 425 kW, 6x4 tractor unit

2017–2023 · 425 kW
39l/100 km
median; 36.3–42.4 across 26 declared configurations

Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit

2015–2023 · 425 kW
41.7l/100 km
median; 38.5–44.8 across 21 declared configurations
Mercedes-Benz Actros, 425 kW, 6x4 tractor unit and Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit side by side
SpecificationMercedes-Benz Actros, 425 kW, 6x4 tractor unitMercedes-Benz Arocs, 425 kW, 6x4 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2017–2023Registeredcentral 90% of records2015–2023Registeredcentral 90% of records
Engine power425 kWDeclared425 kWDeclared
Engine displacement15.6 litresDeclared15.6 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI, EURO VI A, EURO VI C, EURO VI D, EURO VI ERegisteredEURO VI, EURO VI A, EURO VI D, EURO VI ERegistered
Gross vehicle weight26,000–33,000 kgRegisteredmedian 33,000 kg, across 5 type-approval versions and 23 records without one28,000–33,000 kgRegisteredmedian 33,000 kg, across 5 type-approval versions and 6 records without one
Kerb weight9,720–11,850 kgRegisteredmedian 10,222 kg, over 33 registrations10,312–16,775 kgRegisteredmedian 10,552 kg, over 21 registrations
Wheelbase4,600–4,900 mmRegisteredmedian 4,750 mm, over 33 registrations4,800–5,250 mmRegisteredmedian 4,800 mm, over 21 registrations
Overall length6,820–7,400 mmRegisteredmedian 6,910 mm, over 33 registrations7,060–7,530 mmRegisteredmedian 7,060 mm, over 21 registrations
Overall height3,660–4,000 mmRegisteredmedian 3,840 mm, over 7 registrations3,930–4,000 mmRegisteredmedian 3,930 mm, over 6 registrations
Declared fuel, long haul39 l/100 km Declaredmedian; 36.3–42.4 l/100 km across 26 declared configurations41.7 l/100 km Declaredmedian; 38.5–44.8 l/100 km across 21 declared configurations
CO₂ per tonne-km52.92 g Declaredmedian; 49.28–57.45 g56.51 g Declaredmedian; 52.22–60.8 g

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

What the numbers actually say

There is 2.7 l/100 km between these two (6.9%). 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 3,240 litres a year (£4,536). The declared figures for one of them alone span 6.3 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Actros, 425 kW, 6x4 tractor unit full specificationArocs, 425 kW, 6x4 tractor unit full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Actros, 425 kW, 6x4 tractor unit46,800 litres
£65,520 at the assumed price
Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit50,040 litres
£70,056 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.