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

Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023) vs Volvo FMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023)

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 FMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023)

2021–2023 · 345 kW
32.8l/100 km
median; 30.3–37.2 across 11 declared configurations
Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023) and Volvo FMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023) side by side
SpecificationVolvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)Volvo FMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023)
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2021–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power345 kWDeclared345 kWDeclared
Engine displacement10.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight21,000–23,000 kgDeclaredmedian 22,000 kg, across 8 declared configurations21,000–23,000 kgDeclaredmedian 22,000 kg, across 25 declared configurations
Declared fuel, long haul30.7 l/100 km Declaredmedian; 30.7–32 l/100 km across 2 declared configurations32.8 l/100 km Declaredmedian; 30.3–37.2 l/100 km across 11 declared configurations
CO₂ per tonne-km57.34 g Declaredmedian; 57.34–59.74 g61.3 g Declaredmedian; 56.7–69.59 g

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

What the numbers actually say

There is 2.1 l/100 km between these two (6.8%). 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 6.9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023) full specificationFMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023) full specification

Fuel over a year

120,000 km · assumed price
Volvo FMX, 345 kW, 4x2 rigid lorry, 10.8 L (2021–2023)36,840 litres
£51,576 at the assumed price
Volvo FMX, 345 kW, 4x2 rigid lorry, 12.8 L (2021–2023)39,360 litres
£55,104 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.