median; 26.7–33.4 across 618 declared configurations
Iveco X-Way, 387 kW, 4x2 tractor unit and MAN TGX 18.520 4x2, tractor unit (from 2023) side by side
Specification
Iveco X-Way, 387 kW, 4x2 tractor unit
MAN TGX 18.520 4x2, tractor unit (from 2023)
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2022–2023Registeredcentral 90% of records
2023–2026Registeredcentral 90% of records
Engine power
387 kWDeclared
375–382 kWDeclaredmedian 382 kW, across 1,893 declared configurations
Engine displacement
12.9 litresDeclared
12.4 litresDeclared
Gearbox
automatedDeclared
automated, manualDeclared
Emission class
Not recorded
EURO VI ERegistered
Gross vehicle weight
20,000–20,500 kgDeclaredmedian 20,500 kg, across 101 declared configurations
18,000–21,000 kgRegisteredmedian 20,500 kg, across 42 type-approval versions and 26 records without one
Kerb weight
Not recorded
7,557–8,832 kgRegisteredmedian 7,983 kg, over 536 registrations
Wheelbase
Not recorded
3,600–3,900 mmRegisteredmedian 3,900 mm, over 536 registrations
Overall length
Not recorded
5,880–6,280 mmRegisteredmedian 6,180 mm, over 536 registrations
Overall height
Not recorded
3,330–4,000 mmRegisteredmedian 3,880 mm, over 516 registrations
Declared fuel, long haul
35.2 l/100 km Declaredmedian; 30.8–39.7 l/100 km across 56 declared configurations
28.5 l/100 km Declaredmedian; 26.7–33.4 l/100 km across 618 declared configurations
CO₂ per tonne-km
47.78 g Declaredmedian; 41.76–53.8 g
38.65 g Declaredmedian; 36.22–45.25 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The MAN TGX 18.520 4x2, tractor unit (from 2023) declared 6.7 l/100 km less (23.5%) 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 8,040 litres a year, or £11,256. A gap this size is outside the 10% tolerance of declared figures.
