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

MAN TGX 26.640 6x4, tractor unit (2020–2023) vs MAN TGX 33.640 6x4, tractor unit (2020–2023)

MAN TGX 26.640 6x4, tractor unit (2020–2023)

2020–2023 · 471 kW
35.5l/100 km
median; 35.5–38.7 across 4 declared configurations

MAN TGX 33.640 6x4, tractor unit (2020–2023)

2020–2023 · 471 kW
38.9l/100 km
median; 36.3–44.4 across 30 declared configurations
MAN TGX 26.640 6x4, tractor unit (2020–2023) and MAN TGX 33.640 6x4, tractor unit (2020–2023) side by side
SpecificationMAN TGX 26.640 6x4, tractor unit (2020–2023)MAN TGX 33.640 6x4, tractor unit (2020–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2020–2023Registeredcentral 90% of records
Engine power471 kWDeclared471 kWDeclared
Engine displacement15.3 litresDeclared15.3 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight26,000–28,000 kgDeclaredmedian 27,000 kg, across 26 declared configurations26,000–33,000 kgDeclaredmedian 33,000 kg, across 102 declared configurations
Declared fuel, long haul35.5 l/100 km Declaredmedian; 35.5–38.7 l/100 km across 4 declared configurations38.9 l/100 km Declaredmedian; 36.3–44.4 l/100 km across 30 declared configurations
CO₂ per tonne-km48.16 g Declaredmedian; 48.15–52.51 g52.75 g Declaredmedian; 49.16–60.2 g

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

What the numbers actually say

There is 3.4 l/100 km between these two (9.5%). 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 4,080 litres a year (£5,712). The declared figures for one of them alone span 8.1 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 26.640 6x4, tractor unit (2020–2023)42,600 litres
£59,640 at the assumed price
MAN TGX 33.640 6x4, tractor unit (2020–2023)46,680 litres
£65,352 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.