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

Iveco X-Way, 387 kW, 4x2 tractor unit vs Mercedes-Benz Arocs, 390 kW, 4x2 tractor unit

Iveco X-Way, 387 kW, 4x2 tractor unit

2022–2023 · 387 kW
35.2l/100 km
median; 30.8–39.7 across 56 declared configurations

Mercedes-Benz Arocs, 390 kW, 4x2 tractor unit

2020–2023 · 390 kW
36.5l/100 km
median; 30.5–41.1 across 42 declared configurations
Iveco X-Way, 387 kW, 4x2 tractor unit and Mercedes-Benz Arocs, 390 kW, 4x2 tractor unit side by side
SpecificationIveco X-Way, 387 kW, 4x2 tractor unitMercedes-Benz Arocs, 390 kW, 4x2 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2022–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power387 kWDeclared390 kWDeclared
Engine displacement12.9 litresDeclared12.8 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight20,000–20,500 kgDeclaredmedian 20,500 kg, across 101 declared configurations18,000–20,500 kgDeclaredmedian 18,000 kg, across 100 declared configurations
Declared fuel, long haul35.2 l/100 km Declaredmedian; 30.8–39.7 l/100 km across 56 declared configurations36.5 l/100 km Declaredmedian; 30.5–41.1 l/100 km across 42 declared configurations
CO₂ per tonne-km47.78 g Declaredmedian; 41.76–53.8 g49.46 g Declaredmedian; 41.31–55.8 g

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

What the numbers actually say

There is 1.3 l/100 km between these two (3.6%). 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 1,560 litres a year (£2,184). The declared figures for one of them alone span 10.6 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

X-Way, 387 kW, 4x2 tractor unit full specificationArocs, 390 kW, 4x2 tractor unit full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Iveco X-Way, 387 kW, 4x2 tractor unit42,240 litres
£59,136 at the assumed price
Mercedes-Benz Arocs, 390 kW, 4x2 tractor unit43,800 litres
£61,320 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.