median; 30.3–37.4 across 59 declared configurations
Iveco X-Way, 419 kW, 4x2 tractor unit and Mercedes-Benz Actros, 425 kW, 4x2 tractor unit side by side
Specification
Iveco X-Way, 419 kW, 4x2 tractor unit
Mercedes-Benz Actros, 425 kW, 4x2 tractor unit
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2019–2023Registeredcentral 90% of records
2020–2023Registeredcentral 90% of records
Engine power
419 kWDeclared
425 kWDeclared
Engine displacement
12.9 litresDeclared
15.6 litresDeclared
Gearbox
automated, manualDeclared
automatedDeclared
Emission class
Not recorded
EURO VI, EURO VI A, EURO VI ERegistered
Gross vehicle weight
20,000–20,500 kgDeclaredmedian 20,500 kg, across 105 declared configurations
19,000–21,500 kgRegisteredmedian 19,500 kg, across 3 type-approval versions and 2 records without one
Kerb weight
Not recorded
7,865–8,875 kgRegisteredmedian 8,502 kg, over 5 registrations
Wheelbase
Not recorded
3,700–4,000 mmRegisteredmedian 3,850 mm, over 5 registrations
Overall length
Not recorded
6,120–6,500 mmRegisteredmedian 6,310 mm, over 5 registrations
Overall height
Not recorded
3,970–3,980 mmRegisteredmedian 3,970 mm, over 2 registrations
Declared fuel, long haul
36.3 l/100 km Declaredmedian; 32–40 l/100 km across 35 declared configurations
32 l/100 km Declaredmedian; 30.3–37.4 l/100 km across 59 declared configurations
CO₂ per tonne-km
49.2 g Declaredmedian; 43.32–54.24 g
43.44 g Declaredmedian; 41.09–50.7 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The Mercedes-Benz Actros, 425 kW, 4x2 tractor unit declared 4.3 l/100 km less (13.4%) 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 5,160 litres a year, or £7,224. A gap this size is outside the 10% tolerance of declared figures.
