Comparison · 8×4 lorry · construction at 12.9 t

Iveco S-Way, 309 kW, 8x4 rigid lorry vs Scania P 420 B8x4

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

Scania P 420 B8x4

2022–2023 · 309 kW
41.7l/100 km
median; 40.4–41.9 across 5 declared configurations
Iveco S-Way, 309 kW, 8x4 rigid lorry and Scania P 420 B8x4 side by side
SpecificationIveco S-Way, 309 kW, 8x4 rigid lorryScania P 420 B8x4
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2021–2023Registeredcentral 90% of records2022–2023Registeredcentral 90% of records
Engine power309 kWDeclared309 kWDeclared
Engine displacement11.1 litresDeclared12.7 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Gross vehicle weight32,000–36,000 kgDeclaredmedian 36,000 kg, across 89 declared configurations36,000–50,000 kgDeclaredmedian 39,000 kg, across 28 declared configurations
Declared fuel, construction44.5 l/100 km Declaredmedian; 42.4–50.3 l/100 km across 25 declared configurations41.7 l/100 km Declaredmedian; 40.4–41.9 l/100 km across 5 declared configurations
CO₂ per tonne-km90.33 g Declaredmedian; 86.1–102.1 g84.49 g Declaredmedian; 81.99–84.94 g

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

What the numbers actually say

There is 2.8 l/100 km between these two (6.7%). 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 3,360 litres a year (£4,704). 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
Scania P 420 B8x450,040 litres
£70,056 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.