AllTruckData
Comparison · 4×2 tractor unit · long haul at 19.3 t

Volvo FH, 405 kW, 4x2 tractor unit (2020–2023) vs Volvo FM, 405 kW, 4x2 tractor unit

Volvo FH, 405 kW, 4x2 tractor unit (2020–2023)

2020–2023 · 405 kW
29l/100 km
median; 27–36.7 across 305 declared configurations

Volvo FM, 405 kW, 4x2 tractor unit

2019–2022 · 405 kW
30.3l/100 km
median; across 1 declared configurations
Volvo FH, 405 kW, 4x2 tractor unit (2020–2023) and Volvo FM, 405 kW, 4x2 tractor unit side by side
SpecificationVolvo FH, 405 kW, 4x2 tractor unit (2020–2023)Volvo FM, 405 kW, 4x2 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2020–2023Registeredcentral 90% of records2019–2022Registeredcentral 90% of records
Engine power405 kWDeclared405 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO 6, EURO VI D, EURO VI ERegisteredNot recorded
Gross vehicle weight19,000–22,000 kgRegisteredmedian 21,000 kg, across 22 type-approval versions and 6 records without one20,500–22,000 kgDeclaredmedian 21,000 kg, across 17 declared configurations
Kerb weight7,500–8,976 kgRegisteredmedian 8,337 kg, over 41 registrationsNot recorded
Wheelbase3,700–4,000 mmRegisteredmedian 3,800 mm, over 41 registrationsNot recorded
Overall length5,890–6,410 mmRegisteredmedian 6,040 mm, over 41 registrationsNot recorded
Overall height3,430–4,000 mmRegisteredmedian 3,940 mm, over 17 registrationsNot recorded
Declared fuel, long haul29 l/100 km Declaredmedian; 27–36.7 l/100 km across 305 declared configurations30.3 l/100 km Declaredmedian; across 1 declared configuration
CO₂ per tonne-km39.37 g Declaredmedian; 36.63–49.7 g41.04 g Declaredmedian

Fuel and CO₂: long haul at 19.3 t, 2022 declarations.

What the numbers actually say

There is 1.3 l/100 km between these two (4.4%). 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 1,560 litres a year (£2,184). The declared figures for one of them alone span 9.7 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

FH, 405 kW, 4x2 tractor unit (2020–2023) full specificationFM, 405 kW, 4x2 tractor unit full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 405 kW, 4x2 tractor unit (2020–2023)34,800 litres
£48,720 at the assumed price
Volvo FM, 405 kW, 4x2 tractor unit36,360 litres
£50,904 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.