AllTruckData
Comparison · 8×4 lorry · construction at 12.9 t

Volvo FH, 315 kW, 8x4 rigid lorry vs Volvo FM, 323 kW, 8x4 rigid lorry

Volvo FH, 315 kW, 8x4 rigid lorry

2015–2024 · 315 kW
41.9l/100 km
median; 38.4–44.3 across 12 declared configurations

Volvo FM, 323 kW, 8x4 rigid lorry

2020–2023 · 323 kW
42.6l/100 km
median; 38.7–44.8 across 28 declared configurations
Volvo FH, 315 kW, 8x4 rigid lorry and Volvo FM, 323 kW, 8x4 rigid lorry side by side
SpecificationVolvo FH, 315 kW, 8x4 rigid lorryVolvo FM, 323 kW, 8x4 rigid lorry
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2015–2024Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power315 kWDeclared323 kWDeclared
Engine displacement12.8 litresDeclared10.8 litresDeclared
Gearboxautomated, automaticDeclaredautomatedDeclared
Emission classEURO 6, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegisteredEURO VI D, EURO VI ERegistered
Gross vehicle weight40,000–46,000 kgRegisteredmedian 44,000 kg, over 21 registrations36,000–43,000 kgRegisteredmedian 43,000 kg, across 1 type-approval version and 7 records without one
Kerb weight13,715–20,475 kgRegisteredmedian 16,798 kg, over 21 registrations11,250–20,969 kgRegisteredmedian 13,220 kg, over 8 registrations
Wheelbase5,670–7,950 mmRegisteredmedian 6,450 mm, over 21 registrations5,950–7,050 mmRegisteredmedian 6,450 mm, over 8 registrations
Overall length8,350–11,150 mmRegisteredmedian 10,420 mm, over 21 registrations8,500–10,350 mmRegisteredmedian 9,440 mm, over 8 registrations
Overall height3,600–3,930 mmRegisteredmedian 3,880 mm, over 6 registrations3,150–3,970 mmRegisteredmedian 3,150 mm, over 2 registrations
Declared fuel, construction41.9 l/100 km Declaredmedian; 38.4–44.3 l/100 km across 12 declared configurations42.6 l/100 km Declaredmedian; 38.7–44.8 l/100 km across 28 declared configurations
CO₂ per tonne-km85.03 g Declaredmedian; 77.98–89.82 g86.4 g Declaredmedian; 78.5–90.9 g

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

What the numbers actually say

There is 0.7 l/100 km between these two (1.6%). 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 840 litres a year (£1,176). The declared figures for one of them alone span 6.1 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 315 kW, 8x4 rigid lorry full specificationFM, 323 kW, 8x4 rigid lorry full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 315 kW, 8x4 rigid lorry50,280 litres
£70,392 at the assumed price
Volvo FM, 323 kW, 8x4 rigid lorry51,120 litres
£71,568 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.