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

Iveco S-Way, 251 kW, 4x2 rigid lorry vs Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry

Iveco S-Way, 251 kW, 4x2 rigid lorry

2022–2023 · 251 kW
37.3l/100 km
median; 31.3–43.8 across 42 declared configurations
Lower declared fuel

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
Iveco S-Way, 251 kW, 4x2 rigid lorry and Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry side by side
SpecificationIveco S-Way, 251 kW, 4x2 rigid lorryMercedes-Benz Arocs, 240 kW, 4x2 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2022–2023Registeredcentral 90% of records2017–2023Registeredcentral 90% of records
Engine power251 kWDeclared240 kWDeclared
Engine displacement8.7 litresDeclared10.7 litresDeclared
Gearboxautomated, automatic, manualDeclaredautomated, manualDeclared
Emission classNot recordedEURO VI A, EURO VI C, EURO VI ERegistered
Gross vehicle weight20,000 kgDeclared18,000–21,500 kgRegisteredmedian 19,500 kg, over 8 registrations
Kerb weightNot recorded10,805–18,600 kgRegisteredmedian 14,530 kg, over 8 registrations
WheelbaseNot recorded3,600–4,500 mmRegisteredmedian 4,200 mm, over 8 registrations
Overall lengthNot recorded6,750–8,990 mmRegisteredmedian 7,850 mm, over 8 registrations
Overall heightNot recorded3,600 mmRegistered
Declared fuel, long haul37.3 l/100 km Declaredmedian; 31.3–43.8 l/100 km across 42 declared configurations33.6 l/100 km Declaredmedian; 31.6–40.7 l/100 km across 14 declared configurations
CO₂ per tonne-km69.68 g Declaredmedian; 58.56–81.8 g62.9 g Declaredmedian; 59.06–76 g

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

What the numbers actually say

The Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry declared 3.7 l/100 km less (11%) on the long haul at 14 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 4,440 litres a year, or £6,216. A gap this size is outside the 10% tolerance of declared figures.

Fuel over a year

120,000 km · assumed price
Iveco S-Way, 251 kW, 4x2 rigid lorry44,760 litres
£62,664 at the assumed price
Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry40,320 litres
£56,448 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.