Comparison · 8×4 road tractor · construction at 12.9 t

Scania R 650 B8x4*4, road tractor (2020–2021) vs Scania R 660 B8x4*4, road tractor (2021–2023)

Scania R 650 B8x4*4, road tractor (2020–2021)

2020–2021 · 478 kW
45.8l/100 km
median; 43.4–46.4 across 5 declared configurations

Scania R 660 B8x4*4, road tractor (2021–2023)

2021–2023 · 485 kW
43l/100 km
median; 39.6–45.8 across 43 declared configurations
Scania R 650 B8x4*4, road tractor (2020–2021) and Scania R 660 B8x4*4, road tractor (2021–2023) side by side
SpecificationScania R 650 B8x4*4, road tractor (2020–2021)Scania R 660 B8x4*4, road tractor (2021–2023)
Vehicle formRoad tractor (BD)RegisteredRoad tractor (BD)Registered
Axle configuration8×4Declared8×4Declared
Registered new2020–2021Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power478 kWDeclared485 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Gross vehicle weight36,000–43,000 kgDeclaredmedian 37,000 kg, across 51 declared configurations36,000–42,000 kgDeclaredmedian 37,000 kg, across 68 declared configurations
Declared fuel, construction45.8 l/100 km Declaredmedian; 43.4–46.4 l/100 km across 5 declared configurations43 l/100 km Declaredmedian; 39.6–45.8 l/100 km across 43 declared configurations
CO₂ per tonne-km92.8 g Declaredmedian; 88.1–94.1 g87.15 g Declaredmedian; 80.41–92.94 g

Fuel and CO₂: construction at 12.9 t, 2021 declarations.

What the numbers actually say

There is 2.8 l/100 km between these two (6.5%). 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 3,360 litres a year (£4,704). The declared figures for one of them alone span 6.2 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 B8x4*4, road tractor (2020–2021)54,960 litres
£76,944 at the assumed price
Scania R 660 B8x4*4, road tractor (2021–2023)51,600 litres
£72,240 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.