Comparison · 4×2 tractor unit · long haul at 19.3 t
Scania R 650 A4x2 vs Scania S 580 A4x2
What the numbers actually say
There is 0.5 l/100 km between these two (1.5%). 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 600 litres a year (£840). The declared figures for one of them alone span 6.9 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 priceScania R 650 A4x239,360 litres
£55,104 at the assumed price
Scania S 580 A4x238,760 litres
£54,264 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.