AllTruckData
Comparison · 6×2 lorry · long haul at 19.3 t

Volvo FM, 315 kW, 6x2 rigid lorry vs Volvo FMX, 315 kW, 6x2 rigid lorry

Volvo FM, 315 kW, 6x2 rigid lorry

2019–2023 · 315 kW
34.3l/100 km
median; 30.3–45.7 across 158 declared configurations

Volvo FMX, 315 kW, 6x2 rigid lorry

2021–2023 · 315 kW
35.8l/100 km
median; 31.3–39.3 across 35 declared configurations
Volvo FM, 315 kW, 6x2 rigid lorry and Volvo FMX, 315 kW, 6x2 rigid lorry side by side
SpecificationVolvo FM, 315 kW, 6x2 rigid lorryVolvo FMX, 315 kW, 6x2 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration6×2Declared6×2Declared
Registered new2019–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power315 kWDeclared315 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
Gearboxautomated, automaticDeclaredautomated, automaticDeclared
Gross vehicle weight24,000–33,000 kgDeclaredmedian 28,000 kg, across 1,012 declared configurations27,000–33,000 kgDeclaredmedian 29,000 kg, across 88 declared configurations
Declared fuel, long haul34.3 l/100 km Declaredmedian; 30.3–45.7 l/100 km across 158 declared configurations35.8 l/100 km Declaredmedian; 31.3–39.3 l/100 km across 35 declared configurations
CO₂ per tonne-km46.55 g Declaredmedian; 41.14–62 g48.53 g Declaredmedian; 42.48–53.33 g

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

What the numbers actually say

There is 1.5 l/100 km between these two (4.3%). 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 1,800 litres a year (£2,520). The declared figures for one of them alone span 15.4 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FM, 315 kW, 6x2 rigid lorry full specificationFMX, 315 kW, 6x2 rigid lorry full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FM, 315 kW, 6x2 rigid lorry41,160 litres
£57,624 at the assumed price
Volvo FMX, 315 kW, 6x2 rigid lorry42,960 litres
£60,144 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.