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

Iveco S-Way, 309 kW, 4x2 rigid lorry vs Mercedes-Benz Arocs, 315 kW, 4x2 rigid lorry

Iveco S-Way, 309 kW, 4x2 rigid lorry

2020–2023 · 309 kW
32.2l/100 km
median; 30.4–39.6 across 45 declared configurations

Mercedes-Benz Arocs, 315 kW, 4x2 rigid lorry

2020–2023 · 315 kW
34.5l/100 km
median; 32.3–42 across 13 declared configurations
Iveco S-Way, 309 kW, 4x2 rigid lorry and Mercedes-Benz Arocs, 315 kW, 4x2 rigid lorry side by side
SpecificationIveco S-Way, 309 kW, 4x2 rigid lorryMercedes-Benz Arocs, 315 kW, 4x2 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2020–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power309 kWDeclared315 kWDeclared
Engine displacement11.1 litresDeclared10.7 litresDeclared
Gearboxautomated, manualDeclaredautomated, manualDeclared
Gross vehicle weight18,000–20,000 kgDeclaredmedian 20,000 kg, across 157 declared configurations18,000–22,000 kgDeclaredmedian 19,000 kg, across 65 declared configurations
Declared fuel, long haul32.2 l/100 km Declaredmedian; 30.4–39.6 l/100 km across 45 declared configurations34.5 l/100 km Declaredmedian; 32.3–42 l/100 km across 13 declared configurations
CO₂ per tonne-km60.2 g Declaredmedian; 56.74–73.9 g64.5 g Declaredmedian; 60.5–78.5 g

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

What the numbers actually say

There is 2.3 l/100 km between these two (7.1%). 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 2,760 litres a year (£3,864). The declared figures for one of them alone span 9.7 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Fuel over a year

120,000 km · assumed price
Iveco S-Way, 309 kW, 4x2 rigid lorry38,640 litres
£54,096 at the assumed price
Mercedes-Benz Arocs, 315 kW, 4x2 rigid lorry41,400 litres
£57,960 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.