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

Mercedes-Benz Actros, 460 kW, 6x4 tractor unit vs Mercedes-Benz Arocs, 460 kW, 6x4 tractor unit

Mercedes-Benz Actros, 460 kW, 6x4 tractor unit

2020–2023 · 460 kW
39.4l/100 km
median; 35.8–44.8 across 81 declared configurations

Mercedes-Benz Arocs, 460 kW, 6x4 tractor unit

2020–2023 · 460 kW
42.4l/100 km
median; 39.2–46.7 across 20 declared configurations
Mercedes-Benz Actros, 460 kW, 6x4 tractor unit and Mercedes-Benz Arocs, 460 kW, 6x4 tractor unit side by side
SpecificationMercedes-Benz Actros, 460 kW, 6x4 tractor unitMercedes-Benz Arocs, 460 kW, 6x4 tractor unit
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 power460 kWDeclared460 kWDeclared
Engine displacement15.6 litresDeclared15.6 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI A, EURO VI D, EURO VI ERegisteredEURO 6, EURO VI, EURO VI A, EURO VI ERegistered
Gross vehicle weight26,000–33,000 kgRegisteredmedian 33,000 kg, across 4 type-approval versions and 9 records without one32,200–33,000 kgRegisteredmedian 33,000 kg, across 1 type-approval version and 3 records without one
Kerb weight9,688–10,980 kgRegisteredmedian 10,105 kg, over 13 registrations10,071–11,055 kgRegisteredmedian 10,522 kg, over 4 registrations
Wheelbase4,650–4,900 mmRegisteredmedian 4,750 mm, over 13 registrations4,800–5,250 mmRegisteredmedian 4,950 mm, over 4 registrations
Overall length6,850–7,300 mmRegisteredmedian 7,000 mm, over 13 registrations7,060–7,510 mmRegisteredmedian 7,210 mm, over 4 registrations
Overall height3,000–4,000 mmRegisteredmedian 3,960 mm, over 11 registrations3,930 mmRegistered
Declared fuel, long haul39.4 l/100 km Declaredmedian; 35.8–44.8 l/100 km across 81 declared configurations42.4 l/100 km Declaredmedian; 39.2–46.7 l/100 km across 20 declared configurations
CO₂ per tonne-km53.37 g Declaredmedian; 48.48–60.8 g57.43 g Declaredmedian; 53.15–63.3 g

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

What the numbers actually say

There is 3 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 3,600 litres a year (£5,040). The declared figures for one of them alone span 9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Actros, 460 kW, 6x4 tractor unit47,280 litres
£66,192 at the assumed price
Mercedes-Benz Arocs, 460 kW, 6x4 tractor unit50,880 litres
£71,232 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.