AllTruckData
Comparison · 8×4 lorry · construction at 12.9 t

Mercedes-Benz Arocs, 330 kW, 8x4 rigid lorry vs Volvo FMX, 323 kW, 8x4 rigid lorry

Mercedes-Benz Arocs, 330 kW, 8x4 rigid lorry

2014–2024 · 330 kW
44.1l/100 km
median; 42.3–46.7 across 18 declared configurations

Volvo FMX, 323 kW, 8x4 rigid lorry

2021–2023 · 323 kW
43.5l/100 km
median; 39.3–47.2 across 18 declared configurations
Mercedes-Benz Arocs, 330 kW, 8x4 rigid lorry and Volvo FMX, 323 kW, 8x4 rigid lorry side by side
SpecificationMercedes-Benz Arocs, 330 kW, 8x4 rigid lorryVolvo FMX, 323 kW, 8x4 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2014–2024Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power330 kWDeclared323 kWDeclared
Engine displacement12.8 litresDeclared10.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO VI A, EURO VI C, EURO VI D, EURO VI ERegisteredNot recorded
Gross vehicle weight34,500–44,000 kgRegisteredmedian 37,000 kg, over 68 registrations35,000–40,000 kgDeclaredmedian 39,000 kg, across 43 declared configurations
Kerb weight10,020–38,940 kgRegisteredmedian 19,170 kg, over 68 registrationsNot recorded
Wheelbase5,600–7,500 mmRegisteredmedian 6,600 mm, over 68 registrationsNot recorded
Overall length8,250–11,950 mmRegisteredmedian 9,480 mm, over 68 registrationsNot recorded
Overall height3,630–4,000 mmRegisteredmedian 3,820 mm, over 29 registrationsNot recorded
Declared fuel, construction44.1 l/100 km Declaredmedian; 42.3–46.7 l/100 km across 18 declared configurations43.5 l/100 km Declaredmedian; 39.3–47.2 l/100 km across 18 declared configurations
CO₂ per tonne-km89.47 g Declaredmedian; 85.73–94.8 g88.3 g Declaredmedian; 79.82–95.83 g

Fuel and CO₂: construction at 12.9 t, 2022 declarations.

What the numbers actually say

There is 0.6 l/100 km between these two (1.3%). 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 7.9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Arocs, 330 kW, 8x4 rigid lorry full specificationFMX, 323 kW, 8x4 rigid lorry full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Mercedes-Benz Arocs, 330 kW, 8x4 rigid lorry52,920 litres
£74,088 at the assumed price
Volvo FMX, 323 kW, 8x4 rigid lorry52,200 litres
£73,080 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.