Comparison · 6×4 lorry · long haul at 19.3 t
Scania R 540 B6x4, lorry (2020–2023) vs Volvo FMX, 405 kW, 6x4 rigid lorry
Scania R 540 B6x4, lorry (2020–2023)
2020–2023 · 397 kW
36.5l/100 km
median; 34.1–41.3 across 32 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 2.8 l/100 km between these two (7.6%). 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 3,360 litres a year (£4,704). 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 priceScania R 540 B6x4, lorry (2020–2023)43,800 litres
£61,320 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.