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

Iveco Stralis, 375 kW, 4x2 tractor unit vs Mercedes-Benz Arocs, 375 kW, 4x2 tractor unit

Iveco Stralis, 375 kW, 4x2 tractor unit

2019–2020 · 375 kW
33.4l/100 km
median; 32.6–33.9 across 4 declared configurations

Mercedes-Benz Arocs, 375 kW, 4x2 tractor unit

2020–2023 · 375 kW
34.5l/100 km
median; 29.9–40.9 across 47 declared configurations
Iveco Stralis, 375 kW, 4x2 tractor unit and Mercedes-Benz Arocs, 375 kW, 4x2 tractor unit side by side
SpecificationIveco Stralis, 375 kW, 4x2 tractor unitMercedes-Benz Arocs, 375 kW, 4x2 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2020Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power375 kWDeclared375 kWDeclared
Engine displacement12.9 litresDeclared12.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Gross vehicle weight19,000–20,000 kgDeclaredmedian 20,000 kg, across 669 declared configurations18,000–20,500 kgDeclaredmedian 18,000 kg, across 113 declared configurations
Declared fuel, long haul33.4 l/100 km Declaredmedian; 32.6–33.9 l/100 km across 4 declared configurations34.5 l/100 km Declaredmedian; 29.9–40.9 l/100 km across 47 declared configurations
CO₂ per tonne-km45.3 g Declaredmedian; 44.2–45.9 g46.81 g Declaredmedian; 40.54–55.5 g

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

What the numbers actually say

There is 1.1 l/100 km between these two (3.2%). 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 1,320 litres a year (£1,848). The declared figures for one of them alone span 11 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Fuel over a year

120,000 km · assumed price
Iveco Stralis, 375 kW, 4x2 tractor unit40,080 litres
£56,112 at the assumed price
Mercedes-Benz Arocs, 375 kW, 4x2 tractor unit41,400 litres
£57,960 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.