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

Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit vs Scania R 580 A6x4

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

Scania R 580 A6x4

2015–2021 · 427 kW
39l/100 km
median; 36.3–46 across 15 declared configurations
Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit and Scania R 580 A6x4 side by side
SpecificationMercedes-Benz Arocs, 425 kW, 6x4 tractor unitScania R 580 A6x4
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2015–2023Registeredcentral 90% of records2015–2021Registeredcentral 90% of records
Engine power425 kWDeclared427 kWDeclared
Engine displacement15.6 litresDeclared16.4 litresDeclared
GearboxautomatedDeclaredautomated, manualDeclared
Emission classEURO VI, EURO VI A, EURO VI D, EURO VI ERegisteredEURO 6, EURO VI, EURO VI A, EURO VI C, EURO VI DRegistered
Gross vehicle weight28,000–33,000 kgRegisteredmedian 33,000 kg, across 5 type-approval versions and 6 records without one26,800–36,000 kgRegisteredmedian 30,000 kg, across 4 type-approval versions and 17 records without one
Kerb weight10,312–16,775 kgRegisteredmedian 10,552 kg, over 21 registrations9,805–16,843 kgRegisteredmedian 10,505 kg, over 22 registrations
Wheelbase4,800–5,250 mmRegisteredmedian 4,800 mm, over 21 registrations4,400–5,500 mmRegisteredmedian 4,500 mm, over 22 registrations
Overall length7,060–7,530 mmRegisteredmedian 7,060 mm, over 21 registrations6,650–8,100 mmRegisteredmedian 6,910 mm, over 22 registrations
Overall height3,930–4,000 mmRegisteredmedian 3,930 mm, over 6 registrations3,700–3,840 mmRegisteredmedian 3,750 mm, over 3 registrations
Declared fuel, long haul41.7 l/100 km Declaredmedian; 38.5–44.8 l/100 km across 21 declared configurations39 l/100 km Declaredmedian; 36.3–46 l/100 km across 15 declared configurations
CO₂ per tonne-km56.51 g Declaredmedian; 52.22–60.8 g52.9 g Declaredmedian; 49.3–62.3 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 9.7 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Arocs, 425 kW, 6x4 tractor unit full specificationR 580 A6x4 full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit50,040 litres
£70,056 at the assumed price
Scania R 580 A6x446,800 litres
£65,520 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.