AllTruckData
Comparison · 6×2 tractor unit · long haul at 19.3 t

Volvo FH, 315 kW, 6x2 tractor unit (from 2019) vs Volvo FM, 315 kW, 6x2 tractor unit

Lower declared fuel

Volvo FH, 315 kW, 6x2 tractor unit (from 2019)

2019–2026 · 315 kW
28.3l/100 km
median; 27.4–35.2 across 6 declared configurations

Volvo FM, 315 kW, 6x2 tractor unit

2014–2025 · 315 kW
31.3l/100 km
median; 28.7–33.7 across 11 declared configurations
Volvo FH, 315 kW, 6x2 tractor unit (from 2019) and Volvo FM, 315 kW, 6x2 tractor unit side by side
SpecificationVolvo FH, 315 kW, 6x2 tractor unit (from 2019)Volvo FM, 315 kW, 6x2 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×2Declared6×2Declared
Registered new2019–2026Registeredcentral 90% of records2014–2025Registeredcentral 90% of records
Engine power315 kWDeclared315 kWDeclared
Engine displacement12.8 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO 6, EURO VI D, EURO VI ERegisteredEURO 6, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight23,500–27,000 kgRegisteredmedian 26,500 kg, across 23 type-approval versions24,000–30,500 kgRegisteredmedian 27,000 kg, across 12 type-approval versions and 2 records without one
Kerb weight7,776–9,259 kgRegisteredmedian 8,652 kg, over 74 registrations8,173–18,105 kgRegisteredmedian 8,548 kg, over 23 registrations
Wheelbase3,800–4,570 mmRegisteredmedian 4,100 mm, over 74 registrations3,900–4,870 mmRegisteredmedian 4,100 mm, over 23 registrations
Overall length6,190–6,750 mmRegisteredmedian 6,510 mm, over 74 registrations6,310–7,600 mmRegisteredmedian 6,510 mm, over 23 registrations
Overall height3,430–3,950 mmRegisteredmedian 3,500 mm, over 33 registrations3,360–3,880 mmRegisteredmedian 3,380 mm, over 6 registrations
Declared fuel, long haul28.3 l/100 km Declaredmedian; 27.4–35.2 l/100 km across 6 declared configurations31.3 l/100 km Declaredmedian; 28.7–33.7 l/100 km across 11 declared configurations
CO₂ per tonne-km38.42 g Declaredmedian; 37.18–47.74 g42.4 g Declaredmedian; 38.87–45.68 g

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

What the numbers actually say

The Volvo FH, 315 kW, 6x2 tractor unit (from 2019) declared 3 l/100 km less (10.6%) 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 3,600 litres a year, or £5,040. A gap this size is outside the 10% tolerance of declared figures.

FH, 315 kW, 6x2 tractor unit (from 2019) full specificationFM, 315 kW, 6x2 tractor unit full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Volvo FH, 315 kW, 6x2 tractor unit (from 2019)33,960 litres
£47,544 at the assumed price
Volvo FM, 315 kW, 6x2 tractor unit37,560 litres
£52,584 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.