AllTruckData
Comparison · 6×4 tractor unit · long haul at 19.3 t

Volvo FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022) vs Volvo FMX, 345 kW, 6x4 tractor unit

Volvo FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022)

2020–2022 · 345 kW
38.6l/100 km
median; across 1 declared configurations

Volvo FMX, 345 kW, 6x4 tractor unit

2021–2022 · 345 kW
38.6l/100 km
median; across 1 declared configurations
Volvo FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022) and Volvo FMX, 345 kW, 6x4 tractor unit side by side
SpecificationVolvo FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022)Volvo FMX, 345 kW, 6x4 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2022Registeredcentral 90% of records2021–2022Registeredcentral 90% of records
Engine power345 kWDeclared345 kWDeclared
Engine displacement10.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight28,500–31,000 kgDeclaredmedian 31,000 kg, across 3 declared configurations29,000–32,000 kgDeclaredmedian 31,000 kg, across 6 declared configurations
Declared fuel, long haul38.6 l/100 km Declaredmedian; across 1 declared configuration38.6 l/100 km Declaredmedian; across 1 declared configuration
CO₂ per tonne-km52.31 g Declaredmedian52.29 g Declaredmedian

Fuel and CO₂: long haul at 19.3 t, 2021 declarations.

What the numbers actually say

There is 0 l/100 km between these two (0%). That is inside the 10% tolerance of declared figures, so on fuel alone neither is the better choice.

FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022) full specificationFMX, 345 kW, 6x4 tractor unit full specification

Fuel over a year

120,000 km · assumed price
Volvo FM, 345 kW, 6x4 tractor unit, 10.8 L (2020–2022)46,320 litres
£64,848 at the assumed price
Volvo FMX, 345 kW, 6x4 tractor unit46,320 litres
£64,848 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.