Comparison · 6×2 lorry · long haul at 19.3 t
Volvo FM, 375 kW, 6x2 rigid lorry (2019–2023) vs Volvo FMX, 375 kW, 6x2 rigid lorry
Volvo FM, 375 kW, 6x2 rigid lorry (2019–2023)
2019–2023 · 375 kW
34.8l/100 km
median; 30.6–39.1 across 171 declared configurations
Volvo FMX, 375 kW, 6x2 rigid lorry
2021–2023 · 375 kW
34.9l/100 km
median; 32.7–40.5 across 44 declared configurations
What the numbers actually say
There is 0.1 l/100 km between these two (0.2%). 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 120 litres a year (£168). The declared figures for one of them alone span 8.5 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 priceVolvo FM, 375 kW, 6x2 rigid lorry (2019–2023)41,760 litres
£58,464 at the assumed price
Volvo FMX, 375 kW, 6x2 rigid lorry41,880 litres
£58,632 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.