AllTruckData
Comparison · 4×2 lorry · long haul at 14 t

Volvo FH, 345 kW, 4x2 rigid lorry vs Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)

Volvo FH, 345 kW, 4x2 rigid lorry

2019–2023 · 345 kW
29.8l/100 km
median; 27.4–38.4 across 47 declared configurations

Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)

2021–2023 · 345 kW
30.7l/100 km
median; 30.7–32 across 2 declared configurations
Volvo FH, 345 kW, 4x2 rigid lorry and Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023) side by side
SpecificationVolvo FH, 345 kW, 4x2 rigid lorryVolvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power345 kWDeclared345 kWDeclared
Engine displacement12.8 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight20,100–23,000 kgDeclaredmedian 21,000 kg, across 230 declared configurations21,000–23,000 kgDeclaredmedian 22,000 kg, across 8 declared configurations
Declared fuel, long haul29.8 l/100 km Declaredmedian; 27.4–38.4 l/100 km across 47 declared configurations30.7 l/100 km Declaredmedian; 30.7–32 l/100 km across 2 declared configurations
CO₂ per tonne-km55.66 g Declaredmedian; 51.27–71.8 g57.34 g Declaredmedian; 57.34–59.74 g

Fuel and CO₂: long haul at 14 t, 2022 declarations.

What the numbers actually say

There is 0.9 l/100 km between these two (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 1,080 litres a year (£1,512). The declared figures for one of them alone span 11 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 345 kW, 4x2 rigid lorry full specificationFMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 345 kW, 4x2 rigid lorry35,760 litres
£50,064 at the assumed price
Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)36,840 litres
£51,576 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.