AllTruckData
Comparison · 4×2 tractor unit · long haul at 19.3 t

Volvo FH, 315 kW, 4x2 tractor unit (2019–2023) vs Volvo FM, 315 kW, 4x2 tractor unit (2020–2023)

Volvo FH, 315 kW, 4x2 tractor unit (2019–2023)

2019–2023 · 315 kW
29.3l/100 km
median; 26.3–35.9 across 199 declared configurations

Volvo FM, 315 kW, 4x2 tractor unit (2020–2023)

2020–2023 · 315 kW
29.9l/100 km
median; 27.6–34.6 across 54 declared configurations
Volvo FH, 315 kW, 4x2 tractor unit (2019–2023) and Volvo FM, 315 kW, 4x2 tractor unit (2020–2023) side by side
SpecificationVolvo FH, 315 kW, 4x2 tractor unit (2019–2023)Volvo FM, 315 kW, 4x2 tractor unit (2020–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power315 kWDeclared315 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO 6, EURO VI, EURO VI D, EURO VI ERegisteredEURO 6, EURO VI D, EURO VI ERegistered
Gross vehicle weight18,200–22,000 kgRegisteredmedian 21,000 kg, across 64 type-approval versions and 21 records without one19,000–22,000 kgRegisteredmedian 20,500 kg, across 34 type-approval versions and 1 record without one
Kerb weight6,956–8,666 kgRegisteredmedian 7,899 kg, over 479 registrations7,119–8,143 kgRegisteredmedian 7,532 kg, over 304 registrations
Wheelbase3,600–4,000 mmRegisteredmedian 3,800 mm, over 479 registrations3,600–4,000 mmRegisteredmedian 3,800 mm, over 304 registrations
Overall length5,790–6,360 mmRegisteredmedian 5,990 mm, over 479 registrations5,790–6,410 mmRegisteredmedian 5,990 mm, over 304 registrations
Overall height3,460–4,000 mmRegisteredmedian 3,770 mm, over 269 registrations3,110–3,910 mmRegisteredmedian 3,410 mm, over 48 registrations
Declared fuel, long haul29.3 l/100 km Declaredmedian; 26.3–35.9 l/100 km across 199 declared configurations29.9 l/100 km Declaredmedian; 27.6–34.6 l/100 km across 54 declared configurations
CO₂ per tonne-km39.76 g Declaredmedian; 35.67–48.7 g40.48 g Declaredmedian; 37.48–46.87 g

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

What the numbers actually say

There is 0.6 l/100 km between these two (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 720 litres a year (£1,008). The declared figures for one of them alone span 9.6 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 315 kW, 4x2 tractor unit (2019–2023) full specificationFM, 315 kW, 4x2 tractor unit (2020–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 315 kW, 4x2 tractor unit (2019–2023)35,160 litres
£49,224 at the assumed price
Volvo FM, 315 kW, 4x2 tractor unit (2020–2023)35,880 litres
£50,232 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.