AllTruckData
Comparison · 4×2 lorry · long haul at 14 t

Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry vs Volvo FMX, 251 kW, 4x2 rigid lorry

Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry

2017–2023 · 240 kW
33.6l/100 km
median; 31.6–40.7 across 14 declared configurations

Volvo FMX, 251 kW, 4x2 rigid lorry

2021–2023 · 251 kW
33l/100 km
median; 31.1–36.5 across 12 declared configurations
Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry and Volvo FMX, 251 kW, 4x2 rigid lorry side by side
SpecificationMercedes-Benz Arocs, 240 kW, 4x2 rigid lorryVolvo FMX, 251 kW, 4x2 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2017–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power240 kWDeclared251 kWDeclared
Engine displacement10.7 litresDeclared10.8 litresDeclared
Gearboxautomated, manualDeclaredautomated, automaticDeclared
Emission classEURO VI A, EURO VI C, EURO VI ERegisteredEURO VI ERegistered
Gross vehicle weight18,000–21,500 kgRegisteredmedian 19,500 kg, over 8 registrations22,000 kgRegistered
Kerb weight10,805–18,600 kgRegisteredmedian 14,530 kg, over 8 registrations10,803 kgRegistered
Wheelbase3,600–4,500 mmRegisteredmedian 4,200 mm, over 8 registrations3,700 mmRegistered
Overall length6,750–8,990 mmRegisteredmedian 7,850 mm, over 8 registrations6,750 mmRegistered
Overall height3,600 mmRegistered3,570 mmRegistered
Declared fuel, long haul33.6 l/100 km Declaredmedian; 31.6–40.7 l/100 km across 14 declared configurations33 l/100 km Declaredmedian; 31.1–36.5 l/100 km across 12 declared configurations
CO₂ per tonne-km62.9 g Declaredmedian; 59.06–76 g61.8 g Declaredmedian; 58.21–68.2 g

Fuel and CO₂: long haul at 14 t, 2022 declarations.

What the numbers actually say

There is 0.6 l/100 km between these two (1.8%). 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 720 litres a year (£1,008). The declared figures for one of them alone span 9.1 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Arocs, 240 kW, 4x2 rigid lorry full specificationFMX, 251 kW, 4x2 rigid lorry full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry40,320 litres
£56,448 at the assumed price
Volvo FMX, 251 kW, 4x2 rigid lorry39,600 litres
£55,440 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.