Comparison · 6×4 tractor unit · long haul at 19.3 t

MAN TGX 33.580 6x4, tractor unit (2020–2023) vs Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit

MAN TGX 33.580 6x4, tractor unit (2020–2023)

2020–2023 · 427 kW
38.6l/100 km
median; 35.6–46.8 across 42 declared configurations

Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit

2015–2023 · 425 kW
41.7l/100 km
median; 38.5–44.8 across 21 declared configurations
MAN TGX 33.580 6x4, tractor unit (2020–2023) and Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit side by side
SpecificationMAN TGX 33.580 6x4, tractor unit (2020–2023)Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2015–2023Registeredcentral 90% of records
Engine power427 kWDeclared425 kWDeclared
Engine displacement15.3 litresDeclared15.6 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classNot recordedEURO VI, EURO VI A, EURO VI D, EURO VI ERegistered
Gross vehicle weight28,000–33,000 kgRegisteredmedian 28,000 kg, over 2 registrations28,000–33,000 kgRegisteredmedian 33,000 kg, across 5 type-approval versions and 6 records without one
Kerb weightNot recorded10,312–16,775 kgRegisteredmedian 10,552 kg, over 21 registrations
WheelbaseNot recorded4,800–5,250 mmRegisteredmedian 4,800 mm, over 21 registrations
Overall length6,875–7,007 mmRegisteredmedian 6,875 mm, over 2 registrations7,060–7,530 mmRegisteredmedian 7,060 mm, over 21 registrations
Overall height3,750–4,021 mmRegisteredmedian 3,750 mm, over 2 registrations3,930–4,000 mmRegisteredmedian 3,930 mm, over 6 registrations
Declared fuel, long haul38.6 l/100 km Declaredmedian; 35.6–46.8 l/100 km across 42 declared configurations41.7 l/100 km Declaredmedian; 38.5–44.8 l/100 km across 21 declared configurations
CO₂ per tonne-km52.37 g Declaredmedian; 48.28–63.42 g56.51 g Declaredmedian; 52.22–60.8 g

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

What the numbers actually say

There is 3.1 l/100 km between these two (8%). 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 3,720 litres a year (£5,208). The declared figures for one of them alone span 11.2 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
MAN TGX 33.580 6x4, tractor unit (2020–2023)46,320 litres
£64,848 at the assumed price
Mercedes-Benz Arocs, 425 kW, 6x4 tractor unit50,040 litres
£70,056 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.