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

Volvo FM, 250 kW, 4x2 tractor unit (2016–2019) vs Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)

Volvo FM, 250 kW, 4x2 tractor unit (2016–2019)

2016–2019 · 250 kW
33l/100 km
median; 33–34.2 across 2 declared configurations
Lower declared fuel

Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)

2019–2023 · 251 kW
29.6l/100 km
median; 28.4–42.1 across 18 declared configurations
Volvo FM, 250 kW, 4x2 tractor unit (2016–2019) and Volvo FM, 251 kW, 4x2 tractor unit (2019–2023) side by side
SpecificationVolvo FM, 250 kW, 4x2 tractor unit (2016–2019)Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2016–2019Registeredcentral 90% of records2019–2023Registeredcentral 90% of records
Engine power250 kWDeclared251 kWDeclared
Engine displacement10.8 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI B, EURO VI CRegisteredEURO 6, EURO VI D, EURO VI ERegistered
Gross vehicle weight18,600–21,000 kgRegisteredmedian 20,500 kg, across 22 type-approval versions18,200–21,000 kgRegisteredmedian 20,500 kg, across 14 type-approval versions and 2 records without one
Kerb weight6,695–7,519 kgRegisteredmedian 7,085 kg, over 53 registrations6,828–7,650 kgRegisteredmedian 7,050 kg, over 72 registrations
Wheelbase3,500–3,800 mmRegisteredmedian 3,800 mm, over 53 registrations3,600–3,800 mmRegisteredmedian 3,800 mm, over 72 registrations
Overall length5,690–5,990 mmRegisteredmedian 5,990 mm, over 53 registrations5,790–5,990 mmRegisteredmedian 5,990 mm, over 72 registrations
Overall height2,960–3,910 mmRegisteredmedian 3,820 mm, over 25 registrations3,380–3,890 mmRegisteredmedian 3,820 mm, over 18 registrations
Declared fuel, long haul33 l/100 km Declaredmedian; 33–34.2 l/100 km across 2 declared configurations29.6 l/100 km Declaredmedian; 28.4–42.1 l/100 km across 18 declared configurations
CO₂ per tonne-km44.8 g Declaredmedian; 44.8–46.3 g40.17 g Declaredmedian; 38.52–57.1 g

Fuel and CO₂: long haul at 19.3 t, 2019 declarations.

What the numbers actually say

The Volvo FM, 251 kW, 4x2 tractor unit (2019–2023) declared 3.4 l/100 km less (11.4%) on the long haul at 19.3 t, 2019 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 4,080 litres a year, or £5,712. A gap this size is outside the 10% tolerance of declared figures.

FM, 250 kW, 4x2 tractor unit (2016–2019) full specificationFM, 251 kW, 4x2 tractor unit (2019–2023) full specification

Fuel over a year

120,000 km · assumed price
Volvo FM, 250 kW, 4x2 tractor unit (2016–2019)39,600 litres
£55,440 at the assumed price
Volvo FM, 251 kW, 4x2 tractor unit (2019–2023)35,520 litres
£49,728 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.