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

Mercedes-Benz Arocs, 390 kW, 6x4 tractor unit vs Volvo FH, 405 kW, 6x4 tractor unit (2018–2023)

Mercedes-Benz Arocs, 390 kW, 6x4 tractor unit

2018–2023 · 390 kW
40.1l/100 km
median; 35.5–45.2 across 30 declared configurations
Lower declared fuel

Volvo FH, 405 kW, 6x4 tractor unit (2018–2023)

2018–2023 · 405 kW
35.2l/100 km
median; 31.1–43 across 159 declared configurations
Mercedes-Benz Arocs, 390 kW, 6x4 tractor unit and Volvo FH, 405 kW, 6x4 tractor unit (2018–2023) side by side
SpecificationMercedes-Benz Arocs, 390 kW, 6x4 tractor unitVolvo FH, 405 kW, 6x4 tractor unit (2018–2023)
Vehicle formTractor unit (BC)RegisteredTractor unit (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2018–2023Registeredcentral 90% of records2018–2023Registeredcentral 90% of records
Engine power390 kWDeclared405 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO VIRegisteredEURO 5, EURO 6, EURO VI, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight33,000 kgRegistered27,500–36,000 kgRegisteredmedian 32,000 kg, across 41 type-approval versions and 21 records without one
Kerb weight10,287–10,351 kgRegisteredmedian 10,340 kg, over 9 registrations9,049–19,450 kgRegisteredmedian 10,165 kg, over 96 registrations
Wheelbase4,800 mmRegistered4,370–5,270 mmRegisteredmedian 4,570 mm, over 96 registrations
Overall length7,060 mmRegistered6,700–7,800 mmRegisteredmedian 6,960 mm, over 96 registrations
Overall heightNot recorded3,150–4,000 mmRegisteredmedian 3,740 mm, over 37 registrations
Declared fuel, long haul40.1 l/100 km Declaredmedian; 35.5–45.2 l/100 km across 30 declared configurations35.2 l/100 km Declaredmedian; 31.1–43 l/100 km across 159 declared configurations
CO₂ per tonne-km54.32 g Declaredmedian; 48.18–61.22 g47.77 g Declaredmedian; 42.12–58.3 g

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

What the numbers actually say

The Volvo FH, 405 kW, 6x4 tractor unit (2018–2023) declared 4.9 l/100 km less (13.9%) 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 5,880 litres a year, or £8,232. A gap this size is outside the 10% tolerance of declared figures.

Arocs, 390 kW, 6x4 tractor unit full specificationFH, 405 kW, 6x4 tractor unit (2018–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Arocs, 390 kW, 6x4 tractor unit48,120 litres
£67,368 at the assumed price
Volvo FH, 405 kW, 6x4 tractor unit (2018–2023)42,240 litres
£59,136 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.