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

Volvo FH, 315 kW, 6x4 rigid truck vs Volvo FMX, 315 kW, 6x4 rigid truck

Volvo FH, 315 kW, 6x4 rigid truck

2020–2023 · 315 kW
36.4l/100 km
median; 36.4–38.8 across 2 declared configurations

Volvo FMX, 315 kW, 6x4 rigid truck

2021–2023 · 315 kW
39.6l/100 km
median; 36.3–42.3 across 15 declared configurations
Volvo FH, 315 kW, 6x4 rigid truck and Volvo FMX, 315 kW, 6x4 rigid truck side by side
SpecificationVolvo FH, 315 kW, 6x4 rigid truckVolvo FMX, 315 kW, 6x4 rigid truck
Vehicle formTruck (BA)RegisteredTruck (BA)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power315 kWDeclared315 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
Gearboxautomated, automaticDeclaredautomatedDeclared
Gross vehicle weight29,000–33,000 kgDeclaredmedian 32,000 kg, across 11 declared configurations29,000–36,000 kgDeclaredmedian 32,000 kg, across 43 declared configurations
Declared fuel, long haul36.4 l/100 km Declaredmedian; 36.4–38.8 l/100 km across 2 declared configurations39.6 l/100 km Declaredmedian; 36.3–42.3 l/100 km across 15 declared configurations
CO₂ per tonne-km49.3 g Declaredmedian; 49.3–52.63 g53.7 g Declaredmedian; 49.16–57.3 g

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

What the numbers actually say

There is 3.2 l/100 km between these two (8.7%). 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 3,840 litres a year (£5,376). The declared figures for one of them alone span 6 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 315 kW, 6x4 rigid truck full specificationFMX, 315 kW, 6x4 rigid truck full specification

Fuel over a year

120,000 km · assumed price
Volvo FH, 315 kW, 6x4 rigid truck43,680 litres
£61,152 at the assumed price
Volvo FMX, 315 kW, 6x4 rigid truck47,520 litres
£66,528 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.