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

Volvo FH, 345 kW, 8x4 rigid lorry vs Volvo FMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023)

Volvo FH, 345 kW, 8x4 rigid lorry

2015–2024 · 345 kW
43.3l/100 km
median; 40.2–46.8 across 30 declared configurations

Volvo FMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023)

2021–2023 · 345 kW
41.2l/100 km
median; 40.6–44.5 across 14 declared configurations
Volvo FH, 345 kW, 8x4 rigid lorry and Volvo FMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023) side by side
SpecificationVolvo FH, 345 kW, 8x4 rigid lorryVolvo FMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023)
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2015–2024Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power345 kWDeclared345 kWDeclared
Engine displacement12.8 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO 6, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegisteredNot recorded
Gross vehicle weight35,000–45,000 kgRegisteredmedian 43,000 kg, across 1 type-approval version and 52 records without one36,000–40,000 kgDeclaredmedian 40,000 kg, across 39 declared configurations
Kerb weight13,476–30,326 kgRegisteredmedian 17,120 kg, over 53 registrationsNot recorded
Wheelbase5,920–7,400 mmRegisteredmedian 6,470 mm, over 53 registrationsNot recorded
Overall length8,300–11,280 mmRegisteredmedian 9,070 mm, over 52 registrationsNot recorded
Overall height3,400–4,000 mmRegisteredmedian 3,700 mm, over 15 registrationsNot recorded
Declared fuel, construction43.3 l/100 km Declaredmedian; 40.2–46.8 l/100 km across 30 declared configurations41.2 l/100 km Declaredmedian; 40.6–44.5 l/100 km across 14 declared configurations
CO₂ per tonne-km87.79 g Declaredmedian; 81.5–95 g83.64 g Declaredmedian; 82.27–90.3 g

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

What the numbers actually say

There is 2.1 l/100 km between these two (5%). 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 2,520 litres a year (£3,528). The declared figures for one of them alone span 6.6 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 345 kW, 8x4 rigid lorry full specificationFMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 345 kW, 8x4 rigid lorry51,960 litres
£72,744 at the assumed price
Volvo FMX, 345 kW, 8x4 rigid lorry, 10.8 L (2021–2023)49,440 litres
£69,216 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.