Comparison · 6×2 tractor unit · long haul at 19.3 t

Scania R 650 A6x2/4 vs Scania S 650 A6x2/4, tractor unit (2019–2022)

Scania R 650 A6x2/4

2019–2022 · 478 kW
32.7l/100 km
median; 31.3–35.9 across 10 declared configurations

Scania S 650 A6x2/4, tractor unit (2019–2022)

2019–2022 · 478 kW
32.5l/100 km
median; 32.2–35 across 24 declared configurations
Scania R 650 A6x2/4 and Scania S 650 A6x2/4, tractor unit (2019–2022) side by side
SpecificationScania R 650 A6x2/4Scania S 650 A6x2/4, tractor unit (2019–2022)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×2Declared6×2Declared
Registered new2019–2022Registeredcentral 90% of records2019–2022Registeredcentral 90% of records
Engine power478 kWDeclared478 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Gross vehicle weight25,300–29,000 kgDeclaredmedian 27,000 kg, across 59 declared configurations24,300–29,000 kgDeclaredmedian 27,000 kg, across 171 declared configurations
Declared fuel, long haul32.7 l/100 km Declaredmedian; 31.3–35.9 l/100 km across 10 declared configurations32.5 l/100 km Declaredmedian; 32.2–35 l/100 km across 24 declared configurations
CO₂ per tonne-km44.3 g Declaredmedian; 42.4–48.7 g44 g Declaredmedian; 43.7–47.4 g

Fuel and CO₂: long haul at 19.3 t, 2021 declarations.

What the numbers actually say

There is 0.2 l/100 km between these two (0.6%). 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 240 litres a year (£336). The declared figures for one of them alone span 4.6 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 price
Scania R 650 A6x2/439,240 litres
£54,936 at the assumed price
Scania S 650 A6x2/4, tractor unit (2019–2022)39,000 litres
£54,600 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.