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

Renault T, 345 kW, 6x4 tractor unit vs Volvo FM, 315 kW, 6x4 tractor unit

Renault T, 345 kW, 6x4 tractor unit

2019–2021 · 345 kW
43.4l/100 km
median; 39.3–43.4 across 5 declared configurations

Volvo FM, 315 kW, 6x4 tractor unit

2020–2022 · 315 kW
41.7l/100 km
median; 39.4–41.7 across 2 declared configurations
Renault T, 345 kW, 6x4 tractor unit and Volvo FM, 315 kW, 6x4 tractor unit side by side
SpecificationRenault T, 345 kW, 6x4 tractor unitVolvo FM, 315 kW, 6x4 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2019–2021Registeredcentral 90% of records2020–2022Registeredcentral 90% of records
Engine power345 kWDeclared315 kWDeclared
Engine displacement10.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight28,500–35,000 kgDeclaredmedian 28,500 kg, across 11 declared configurations28,500–31,000 kgDeclaredmedian 29,000 kg, across 6 declared configurations
Declared fuel, long haul43.4 l/100 km Declaredmedian; 39.3–43.4 l/100 km across 5 declared configurations41.7 l/100 km Declaredmedian; 39.4–41.7 l/100 km across 2 declared configurations
CO₂ per tonne-km58.8 g Declaredmedian; 53.2–58.8 g56.6 g Declaredmedian; 53.4–56.6 g

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

What the numbers actually say

There is 1.7 l/100 km between these two (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 2,040 litres a year (£2,856). The declared figures for one of them alone span 4.1 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

T, 345 kW, 6x4 tractor unit full specificationFM, 315 kW, 6x4 tractor unit full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Renault T, 345 kW, 6x4 tractor unit52,080 litres
£72,912 at the assumed price
Volvo FM, 315 kW, 6x4 tractor unit50,040 litres
£70,056 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.