Comparison · 6×4 tractor unit · long haul at 19.3 t
MAN TGX 33.540 6x4, tractor unit (2019–2023) vs Volvo FMX, 405 kW, 6x4 tractor unit
MAN TGX 33.540 6x4, tractor unit (2019–2023)
2019–2023 · 397 kW
36.4l/100 km
median; 36.3–41.7 across 8 declared configurations
Volvo FMX, 405 kW, 6x4 tractor unit
2021–2023 · 405 kW
39.5l/100 km
median; 35.3–44.5 across 8 declared configurations
What the numbers actually say
There is 3.1 l/100 km between these two (8.5%). 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 3,720 litres a year (£5,208). The declared figures for one of them alone span 9.2 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 priceMAN TGX 33.540 6x4, tractor unit (2019–2023)43,680 litres
£61,152 at the assumed price
Volvo FMX, 405 kW, 6x4 tractor unit47,400 litres
£66,360 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.