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

Scania R 650 A6x4, tractor unit (2019–2021) vs Scania R 660 A6x4

Scania R 650 A6x4, tractor unit (2019–2021)

2019–2021 · 478 kW
40.4l/100 km
median; 36.4–44 across 15 declared configurations
Lower declared fuel

Scania R 660 A6x4

2021–2023 · 485 kW
34l/100 km
median; 31.7–38.9 across 83 declared configurations
Scania R 650 A6x4, tractor unit (2019–2021) and Scania R 660 A6x4 side by side
SpecificationScania R 650 A6x4, tractor unit (2019–2021)Scania R 660 A6x4
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration6×4Declared6×4Declared
Registered new2019–2021Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power478 kWDeclared485 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO 6, EURO VI, EURO VI C, EURO VI DRegisteredEURO VI, EURO VI ERegistered
Gross vehicle weight27,000–36,000 kgRegisteredmedian 30,000 kg, across 4 type-approval versions and 14 records without one28,500–36,000 kgRegisteredmedian 30,000 kg, across 7 type-approval versions and 4 records without one
Kerb weight9,975–15,950 kgRegisteredmedian 10,525 kg, over 18 registrations10,003–15,108 kgRegisteredmedian 10,507 kg, over 11 registrations
Wheelbase3,350–6,300 mmRegisteredmedian 4,500 mm, over 18 registrations4,300–5,300 mmRegisteredmedian 4,700 mm, over 11 registrations
Overall length6,750–9,000 mmRegisteredmedian 6,910 mm, over 18 registrations6,670–7,560 mmRegisteredmedian 7,060 mm, over 11 registrations
Overall height3,800–4,000 mmRegisteredmedian 3,950 mm, over 6 registrations3,560–4,000 mmRegisteredmedian 3,760 mm, over 10 registrations
Declared fuel, long haul40.4 l/100 km Declaredmedian; 36.4–44 l/100 km across 15 declared configurations34 l/100 km Declaredmedian; 31.7–38.9 l/100 km across 83 declared configurations
CO₂ per tonne-km54.8 g Declaredmedian; 49.3–59.6 g46.04 g Declaredmedian; 42.98–52.71 g

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

What the numbers actually say

The Scania R 660 A6x4 declared 6.4 l/100 km less (18.8%) on the long haul at 19.3 t, 2021 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 7,680 litres a year, or £10,752. A gap this size is outside the 10% tolerance of declared figures.

R 650 A6x4, tractor unit (2019–2021) full specificationR 660 A6x4 full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Scania R 650 A6x4, tractor unit (2019–2021)48,480 litres
£67,872 at the assumed price
Scania R 660 A6x440,800 litres
£57,120 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.