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

Scania S 650 A6x4 vs Scania S 660 A6x4

Scania S 650 A6x4

2019–2021 · 478 kW
38.3l/100 km
median; 35–39.8 across 6 declared configurations

Scania S 660 A6x4

2022–2025 · 485 kW
33.9l/100 km
median; 31–41.9 across 53 declared configurations
Scania S 650 A6x4 and Scania S 660 A6x4 side by side
SpecificationScania S 650 A6x4Scania S 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 records2022–2025Registeredcentral 90% of records
Engine power478 kWDeclared485 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI, EURO VI C, EURO VI DRegisteredEURO VI, EURO VI ERegistered
Gross vehicle weight28,000–36,000 kgRegisteredmedian 30,000 kg, across 1 type-approval version and 7 records without one28,000–36,000 kgRegisteredmedian 30,000 kg, across 6 type-approval versions and 9 records without one
Kerb weight10,235–15,140 kgRegisteredmedian 10,605 kg, over 8 registrations10,155–10,865 kgRegisteredmedian 10,545 kg, over 23 registrations
Wheelbase4,450–5,100 mmRegisteredmedian 4,500 mm, over 8 registrations4,500–5,300 mmRegisteredmedian 4,700 mm, over 23 registrations
Overall length6,700–7,420 mmRegisteredmedian 6,900 mm, over 8 registrations6,800–7,560 mmRegisteredmedian 6,910 mm, over 23 registrations
Overall height3,900–4,000 mmRegisteredmedian 3,980 mm, over 3 registrations3,770–4,000 mmRegisteredmedian 3,990 mm, over 22 registrations
Declared fuel, long haul38.3 l/100 km Declaredmedian; 35–39.8 l/100 km across 6 declared configurations33.9 l/100 km Declaredmedian; 31–41.9 l/100 km across 53 declared configurations
CO₂ per tonne-km51.9 g Declaredmedian; 47.5–53.9 g45.9 g Declaredmedian; 42.08–56.82 g

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

What the numbers actually say

We publish the table but give no verdict: they were not registered new in the same years.

Fuel over a year

120,000 km · assumed price
Scania S 650 A6x445,960 litres
£64,344 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.