AllTruckData
Comparison · 6×4 lorry · long haul at 19.3 t

Scania P 420 B6x4 vs Volvo FM, 315 kW, 6x4 rigid lorry

Scania P 420 B6x4

2023 · 309 kW
34.1l/100 km
median; 32.7–36.2 across 10 declared configurations

Volvo FM, 315 kW, 6x4 rigid lorry

2020–2023 · 315 kW
36.9l/100 km
median; 34.7–43.2 across 11 declared configurations
Scania P 420 B6x4 and Volvo FM, 315 kW, 6x4 rigid lorry side by side
SpecificationScania P 420 B6x4Volvo FM, 315 kW, 6x4 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration6×4Declared6×4Declared
Registered new2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power309 kWDeclared315 kWDeclared
Engine displacement12.7 litresDeclared12.8 litresDeclared
Gearboxautomated, automaticDeclaredautomated, automaticDeclared
Gross vehicle weight26,500–36,000 kgDeclaredmedian 30,000 kg, across 21 declared configurations28,500–36,000 kgDeclaredmedian 30,000 kg, across 89 declared configurations
Declared fuel, long haul34.1 l/100 km Declaredmedian; 32.7–36.2 l/100 km across 10 declared configurations36.9 l/100 km Declaredmedian; 34.7–43.2 l/100 km across 11 declared configurations
CO₂ per tonne-km46.26 g Declaredmedian; 44.38–49.06 g50.07 g Declaredmedian; 47.09–58.6 g

Fuel and CO₂: long haul at 19.3 t, 2022 declarations.

What the numbers actually say

There is 2.8 l/100 km between these two (8.2%). 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 8.5 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

P 420 B6x4 full specificationFM, 315 kW, 6x4 rigid lorry full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Scania P 420 B6x440,920 litres
£57,288 at the assumed price
Volvo FM, 315 kW, 6x4 rigid lorry44,280 litres
£61,992 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.