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

Iveco Stralis, 243 kW, 4x2 tractor unit vs Volvo FM, 250 kW, 4x2 tractor unit (2016–2019)

Iveco Stralis, 243 kW, 4x2 tractor unit

2019 · 243 kW
35.8l/100 km
median; 33.7–35.8 across 2 declared configurations

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

2016–2019 · 250 kW
33l/100 km
median; 33–34.2 across 2 declared configurations
Iveco Stralis, 243 kW, 4x2 tractor unit and Volvo FM, 250 kW, 4x2 tractor unit (2016–2019) side by side
SpecificationIveco Stralis, 243 kW, 4x2 tractor unitVolvo FM, 250 kW, 4x2 tractor unit (2016–2019)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019Registeredcentral 90% of records2016–2019Registeredcentral 90% of records
Engine power243 kWDeclared250 kWDeclared
Engine displacement8.7 litresDeclared10.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classNot recordedEURO VI B, EURO VI CRegistered
Gross vehicle weight20,000 kgDeclared18,600–21,000 kgRegisteredmedian 20,500 kg, across 22 type-approval versions
Kerb weightNot recorded6,695–7,519 kgRegisteredmedian 7,085 kg, over 53 registrations
WheelbaseNot recorded3,500–3,800 mmRegisteredmedian 3,800 mm, over 53 registrations
Overall lengthNot recorded5,690–5,990 mmRegisteredmedian 5,990 mm, over 53 registrations
Overall heightNot recorded2,960–3,910 mmRegisteredmedian 3,820 mm, over 25 registrations
Declared fuel, long haul35.8 l/100 km Declaredmedian; 33.7–35.8 l/100 km across 2 declared configurations33 l/100 km Declaredmedian; 33–34.2 l/100 km across 2 declared configurations
CO₂ per tonne-km48.6 g Declaredmedian; 45.8–48.6 g44.8 g Declaredmedian; 44.8–46.3 g

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

What the numbers actually say

There is 2.8 l/100 km between these two (8.4%). 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 3,360 litres a year (£4,704).

Fuel over a year

120,000 km · assumed price
Iveco Stralis, 243 kW, 4x2 tractor unit42,960 litres
£60,144 at the assumed price
Volvo FM, 250 kW, 4x2 tractor unit (2016–2019)39,600 litres
£55,440 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.