Comparison · 8×4 lorry · construction at 12.9 t

Iveco S-Way, 419 kW, 8x4 rigid lorry vs Volvo FMX, 405 kW, 8x4 rigid lorry (2021–2023)

Iveco S-Way, 419 kW, 8x4 rigid lorry

2021–2023 · 419 kW

45.2l/100 km

median; 41.2–46.8 across 9 declared configurations

Volvo FMX, 405 kW, 8x4 rigid lorry (2021–2023)

2021–2023 · 405 kW

43.8l/100 km

median; 40.6–48.6 across 30 declared configurations

Iveco S-Way, 419 kW, 8x4 rigid lorry and Volvo FMX, 405 kW, 8x4 rigid lorry (2021–2023) side by side
Specification	Iveco S-Way, 419 kW, 8x4 rigid lorry	Volvo FMX, 405 kW, 8x4 rigid lorry (2021–2023)
Vehicle form	Lorry (BA)Registered	Lorry (BA)Registered
Axle configuration	8×4Declared	8×4Declared
Registered new	2021–2023Registeredcentral 90% of records	2021–2023Registeredcentral 90% of records
Engine power	419 kWDeclared	405 kWDeclared
Engine displacement	12.9 litresDeclared	12.8 litresDeclared
Gearbox	automatedDeclared	automatedDeclared
Emission class	Not recorded	EURO VI ERegistered
Gross vehicle weight	36,000 kgDeclared	44,000 kgRegistered
Kerb weight	Not recorded	14,625 kgRegistered
Wheelbase	Not recorded	6,450 mmRegistered
Overall length	Not recorded	9,220 mmRegistered
Overall height	Not recorded	3,200 mmRegistered
Declared fuel, construction	45.2 l/100 km Declaredmedian; 41.2–46.8 l/100 km across 9 declared configurations	43.8 l/100 km Declaredmedian; 40.6–48.6 l/100 km across 30 declared configurations
CO₂ per tonne-km	91.65 g Declaredmedian; 83.65–94.8 g	88.93 g Declaredmedian; 82.27–98.6 g

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

What the numbers actually say

There is 1.4 l/100 km between these two (3.1%). 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 1,680 litres a year (£2,352). The declared figures for one of them alone span 8 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

S-Way, 419 kW, 8x4 rigid lorry full specification FMX, 405 kW, 8x4 rigid lorry (2021–2023) full specification The fuel ranking

Fuel over a year

120,000 km · assumed price

Iveco S-Way, 419 kW, 8x4 rigid lorry54,240 litres

£75,936 at the assumed price

Volvo FMX, 405 kW, 8x4 rigid lorry (2021–2023)52,560 litres

£73,584 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.