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

Volvo FH, 413 kW, 6x4 tractor unit vs Volvo FM, 405 kW, 6x4 tractor unit

Volvo FH, 413 kW, 6x4 tractor unit

2020–2023 · 413 kW
41.3l/100 km
median; 36.3–44.9 across 8 declared configurations
Lower declared fuel

Volvo FM, 405 kW, 6x4 tractor unit

2018–2023 · 405 kW
35.3l/100 km
median; across 2 declared configurations
Volvo FH, 413 kW, 6x4 tractor unit and Volvo FM, 405 kW, 6x4 tractor unit side by side
SpecificationVolvo FH, 413 kW, 6x4 tractor unitVolvo FM, 405 kW, 6x4 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2018–2023Registeredcentral 90% of records
Engine power413 kWDeclared405 kWDeclared
Engine displacement16.1 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classNot recordedEURO 6, EURO VI B, EURO VI C, EURO VI ERegistered
Gross vehicle weight29,000–36,000 kgDeclaredmedian 35,000 kg, across 28 declared configurations29,000–35,000 kgRegisteredmedian 32,000 kg, across 7 type-approval versions and 1 record without one
Kerb weightNot recorded7,570–10,160 kgRegisteredmedian 9,709 kg, over 9 registrations
WheelbaseNot recorded4,370–4,770 mmRegisteredmedian 4,570 mm, over 9 registrations
Overall lengthNot recorded6,740–7,120 mmRegisteredmedian 6,920 mm, over 9 registrations
Overall heightNot recorded2,830–3,790 mmRegisteredmedian 3,540 mm, over 5 registrations
Declared fuel, long haul41.3 l/100 km Declaredmedian; 36.3–44.9 l/100 km across 8 declared configurations35.3 l/100 km Declaredmedian; across 2 declared configurations
CO₂ per tonne-km55.94 g Declaredmedian; 49.16–60.8 g47.84 g Declaredmedian; 47.84–47.87 g

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

What the numbers actually say

The Volvo FM, 405 kW, 6x4 tractor unit declared 6 l/100 km less (16.9%) on the long haul at 19.3 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 7,200 litres a year, or £10,080. A gap this size is outside the 10% tolerance of declared figures.

FH, 413 kW, 6x4 tractor unit full specificationFM, 405 kW, 6x4 tractor unit full specification

Fuel over a year

120,000 km · assumed price
Volvo FH, 413 kW, 6x4 tractor unit49,560 litres
£69,384 at the assumed price
Volvo FM, 405 kW, 6x4 tractor unit42,360 litres
£59,304 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.