Comparison · 8×4 lorry · construction at 12.9 t

Iveco S-Way, 309 kW, 8x4 rigid lorry vs Mercedes-Benz Arocs, 310 kW, 8x4 rigid lorry

Iveco S-Way, 309 kW, 8x4 rigid lorry

2021–2023 · 309 kW
44.5l/100 km
median; 42.4–50.3 across 25 declared configurations

Mercedes-Benz Arocs, 310 kW, 8x4 rigid lorry

2014–2023 · 310 kW
42.6l/100 km
median; 42.6–45.9 across 2 declared configurations
Iveco S-Way, 309 kW, 8x4 rigid lorry and Mercedes-Benz Arocs, 310 kW, 8x4 rigid lorry side by side
SpecificationIveco S-Way, 309 kW, 8x4 rigid lorryMercedes-Benz Arocs, 310 kW, 8x4 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2021–2023Registeredcentral 90% of records2014–2023Registeredcentral 90% of records
Engine power309 kWDeclared310 kWDeclared
Engine displacement11.1 litresDeclared12.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classNot recordedEURO 6, EURO VI A, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight32,000–36,000 kgDeclaredmedian 36,000 kg, across 89 declared configurations35,000–44,000 kgRegisteredmedian 41,000 kg, over 49 registrations
Kerb weightNot recorded13,560–33,400 kgRegisteredmedian 15,665 kg, over 49 registrations
WheelbaseNot recorded5,600–7,500 mmRegisteredmedian 5,900 mm, over 49 registrations
Overall lengthNot recorded8,460–12,000 mmRegisteredmedian 8,970 mm, over 49 registrations
Overall heightNot recorded3,550–4,000 mmRegisteredmedian 3,850 mm, over 4 registrations
Declared fuel, construction44.5 l/100 km Declaredmedian; 42.4–50.3 l/100 km across 25 declared configurations42.6 l/100 km Declaredmedian; 42.6–45.9 l/100 km across 2 declared configurations
CO₂ per tonne-km90.33 g Declaredmedian; 86.1–102.1 g86.35 g Declaredmedian; 86.35–93.1 g

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

What the numbers actually say

There is 1.9 l/100 km between these two (4.4%). 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 2,280 litres a year (£3,192). 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.

Fuel over a year

120,000 km · assumed price
Iveco S-Way, 309 kW, 8x4 rigid lorry53,400 litres
£74,760 at the assumed price
Mercedes-Benz Arocs, 310 kW, 8x4 rigid lorry51,120 litres
£71,568 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.