Comparison · 6×4 lorry · long haul at 19.3 t
Volvo FH, 413 kW, 6x4 rigid lorry vs Volvo FMX, 405 kW, 6x4 rigid lorry
Volvo FH, 413 kW, 6x4 rigid lorry
2020–2023 · 413 kW
40.2l/100 km
median; 39–44.6 across 4 declared configurations
Volvo FMX, 405 kW, 6x4 rigid lorry
2021–2023 · 405 kW
39.3l/100 km
median; 36.1–47.7 across 16 declared configurations
What the numbers actually say
There is 0.9 l/100 km between these two (2.2%). 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 1,080 litres a year (£1,512). The declared figures for one of them alone span 11.6 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 FH, 413 kW, 6x4 rigid lorry48,240 litres
£67,536 at the assumed price
Volvo FMX, 405 kW, 6x4 rigid lorry47,160 litres
£66,024 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.