AllTruckData
Comparison · 6×4 tractor unit · long haul at 19.3 t

Scania R 650 B6x4, tractor unit (2020–2023) vs Scania S 660 A6x4

Scania R 650 B6x4, tractor unit (2020–2023)

2020–2023 · 478 kW
39.1l/100 km
median; across 1 declared configurations
Lower declared fuel

Scania S 660 A6x4

2022–2025 · 485 kW
33.9l/100 km
median; 31–41.9 across 53 declared configurations
Scania R 650 B6x4, tractor unit (2020–2023) and Scania S 660 A6x4 side by side
SpecificationScania R 650 B6x4, tractor unit (2020–2023)Scania S 660 A6x4
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2020–2023Registeredcentral 90% of records2022–2025Registeredcentral 90% of records
Engine power478 kWDeclared485 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classNot recordedEURO VI, EURO VI ERegistered
Gross vehicle weight28,000–42,000 kgDeclaredmedian 30,000 kg, across 12 declared configurations28,000–36,000 kgRegisteredmedian 30,000 kg, across 6 type-approval versions and 9 records without one
Kerb weightNot recorded10,155–10,865 kgRegisteredmedian 10,545 kg, over 23 registrations
WheelbaseNot recorded4,500–5,300 mmRegisteredmedian 4,700 mm, over 23 registrations
Overall lengthNot recorded6,800–7,560 mmRegisteredmedian 6,910 mm, over 23 registrations
Overall heightNot recorded3,770–4,000 mmRegisteredmedian 3,990 mm, over 22 registrations
Declared fuel, long haul39.1 l/100 km Declaredmedian; across 1 declared configuration33.9 l/100 km Declaredmedian; 31–41.9 l/100 km across 53 declared configurations
CO₂ per tonne-km52.9 g Declaredmedian45.9 g Declaredmedian; 42.08–56.82 g

Fuel and CO₂: long haul at 19.3 t, 2022 declarations.

What the numbers actually say

The Scania S 660 A6x4 declared 5.2 l/100 km less (15.3%) on the long haul at 19.3 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 6,240 litres a year, or £8,736. A gap this size is outside the 10% tolerance of declared figures.

R 650 B6x4, tractor unit (2020–2023) full specificationS 660 A6x4 full specification

Fuel over a year

120,000 km · assumed price
Scania R 650 B6x4, tractor unit (2020–2023)46,920 litres
£65,688 at the assumed price
Scania S 660 A6x440,680 litres
£56,952 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.