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

Mercedes-Benz Arocs, 240 kW, 6x4 rigid lorry vs Volvo FE, 240 kW, 6x4 rigid lorry

Mercedes-Benz Arocs, 240 kW, 6x4 rigid lorry

2017–2022 · 240 kW

39.6l/100 km

median; 39.6–40 across 2 declared configurations

Volvo FE, 240 kW, 6x4 rigid lorry

2020–2021 · 240 kW

37.5l/100 km

median; across 1 declared configurations

Mercedes-Benz Arocs, 240 kW, 6x4 rigid lorry and Volvo FE, 240 kW, 6x4 rigid lorry side by side
Specification	Mercedes-Benz Arocs, 240 kW, 6x4 rigid lorry	Volvo FE, 240 kW, 6x4 rigid lorry
Vehicle form	Lorry (BA)Registered	Lorry (BA)Registered
Axle configuration	6×4Declared	6×4Declared
Registered new	2017–2022Registeredcentral 90% of records	2020–2021Registeredcentral 90% of records
Engine power	240 kWDeclared	240 kWDeclared
Engine displacement	10.7 litresDeclared	7.7 litresDeclared
Gearbox	automatedDeclared	automated, automatic, manualDeclared
Emission class	EURO VI C, EURO VI DRegistered	Not recorded
Gross vehicle weight	26,000–28,000 kgRegisteredmedian 26,000 kg, over 2 registrations	28,000 kgDeclared
Kerb weight	24,070–24,600 kgRegisteredmedian 24,070 kg, over 2 registrations	Not recorded
Wheelbase	5,250 mmRegistered	Not recorded
Overall length	9,800–10,000 mmRegisteredmedian 9,800 mm, over 2 registrations	Not recorded
Overall height	3,900 mmRegistered	Not recorded
Declared fuel, long haul	39.6 l/100 km Declaredmedian; 39.6–40 l/100 km across 2 declared configurations	37.5 l/100 km Declaredmedian; across 1 declared configuration
CO₂ per tonne-km	53.74 g Declaredmedian; 53.74–54.2 g	50.79 g Declaredmedian

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

What the numbers actually say

There is 2.1 l/100 km between these two (5.6%). 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 2,520 litres a year (£3,528).

Arocs, 240 kW, 6x4 rigid lorry full specification FE, 240 kW, 6x4 rigid lorry full specification

Fuel over a year

120,000 km · assumed price

Mercedes-Benz Arocs, 240 kW, 6x4 rigid lorry47,520 litres

£66,528 at the assumed price

Volvo FE, 240 kW, 6x4 rigid lorry45,000 litres

£63,000 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.