Comparison · 4×2 lorry · long haul at 14 t
MAN TGX 18.400 4x2, 9 L, rigid lorry (2019–2023) vs Volvo FMX, 285 kW, 4x2 rigid lorry
MAN TGX 18.400 4x2, 9 L, rigid lorry (2019–2023)
2019–2023 · 294 kW
30l/100 km
median; 29.1–32.6 across 16 declared configurations
Volvo FMX, 285 kW, 4x2 rigid lorry
2021–2023 · 285 kW
31.3l/100 km
median; 29.8–37.7 across 22 declared configurations
What the numbers actually say
There is 1.3 l/100 km between these two (4.3%). 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 1,560 litres a year (£2,184). The declared figures for one of them alone span 7.9 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 18.400 4x2, 9 L, rigid lorry (2019–2023)36,000 litres
£50,400 at the assumed price
Volvo FMX, 285 kW, 4x2 rigid lorry37,560 litres
£52,584 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.