Comparison · 6×4 lorry · long haul at 19.3 t

Mercedes-Benz Arocs, 310 kW, 6x4 rigid lorry vs Mercedes-Benz Arocs, 315 kW, 6x4 rigid lorry

Mercedes-Benz Arocs, 310 kW, 6x4 rigid lorry

2021–2023 · 310 kW
41.9l/100 km
median; 37.6–43.7 across 5 declared configurations

Mercedes-Benz Arocs, 315 kW, 6x4 rigid lorry

2021–2023 · 315 kW
41.4l/100 km
median; 37.3–46.6 across 31 declared configurations
Mercedes-Benz Arocs, 310 kW, 6x4 rigid lorry and Mercedes-Benz Arocs, 315 kW, 6x4 rigid lorry side by side
SpecificationMercedes-Benz Arocs, 310 kW, 6x4 rigid lorryMercedes-Benz Arocs, 315 kW, 6x4 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration6×4Declared6×4Declared
Registered new2021–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power310 kWDeclared315 kWDeclared
Engine displacement12.8 litresDeclared10.7 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight26,000–35,000 kgDeclaredmedian 26,000 kg, across 17 declared configurations26,000–35,800 kgDeclaredmedian 26,000 kg, across 83 declared configurations
Declared fuel, long haul41.9 l/100 km Declaredmedian; 37.6–43.7 l/100 km across 5 declared configurations41.4 l/100 km Declaredmedian; 37.3–46.6 l/100 km across 31 declared configurations
CO₂ per tonne-km56.8 g Declaredmedian; 50.96–59.21 g56.1 g Declaredmedian; 50.57–63.2 g

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

What the numbers actually say

There is 0.5 l/100 km between these two (1.2%). 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 600 litres a year (£840). The declared figures for one of them alone span 9.3 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 Arocs, 310 kW, 6x4 rigid lorry50,280 litres
£70,392 at the assumed price
Mercedes-Benz Arocs, 315 kW, 6x4 rigid lorry49,680 litres
£69,552 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.