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

Mercedes-Benz Arocs, 390 kW, 6x4 rigid lorry vs Scania R 540 B6x4, lorry (2020–2023)

Mercedes-Benz Arocs, 390 kW, 6x4 rigid lorry

2021–2023 · 390 kW
42.5l/100 km
median; 35.3–49.2 across 23 declared configurations
Lower declared fuel

Scania R 540 B6x4, lorry (2020–2023)

2020–2023 · 397 kW
36.5l/100 km
median; 34.1–41.3 across 32 declared configurations
Mercedes-Benz Arocs, 390 kW, 6x4 rigid lorry and Scania R 540 B6x4, lorry (2020–2023) side by side
SpecificationMercedes-Benz Arocs, 390 kW, 6x4 rigid lorryScania R 540 B6x4, lorry (2020–2023)
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration6×4Declared6×4Declared
Registered new2021–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power390 kWDeclared397 kWDeclared
Engine displacement12.8 litresDeclared12.7 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight26,000–35,800 kgDeclaredmedian 28,000 kg, across 79 declared configurations26,500–42,000 kgDeclaredmedian 30,000 kg, across 155 declared configurations
Declared fuel, long haul42.5 l/100 km Declaredmedian; 35.3–49.2 l/100 km across 23 declared configurations36.5 l/100 km Declaredmedian; 34.1–41.3 l/100 km across 32 declared configurations
CO₂ per tonne-km57.67 g Declaredmedian; 47.92–66.7 g49.49 g Declaredmedian; 46.26–56 g

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

What the numbers actually say

The Scania R 540 B6x4, lorry (2020–2023) declared 6 l/100 km less (16.4%) 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 7,200 litres a year, or £10,080. A gap this size is outside the 10% tolerance of declared figures.

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Arocs, 390 kW, 6x4 rigid lorry51,000 litres
£71,400 at the assumed price
Scania R 540 B6x4, lorry (2020–2023)43,800 litres
£61,320 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.