AllTruckData
Comparison · 4×2 tractor unit · long haul at 19.3 t

Scania R 650 A4x2 vs Scania S 770 A4x2, tractor unit (2021–2024)

Scania R 650 A4x2

2019–2021 · 478 kW
32.8l/100 km
median; 31.6–38.5 across 25 declared configurations

Scania S 770 A4x2, tractor unit (2021–2024)

2021–2024 · 566 kW
31.2l/100 km
median; 28.6–34.7 across 148 declared configurations
Scania R 650 A4x2 and Scania S 770 A4x2, tractor unit (2021–2024) side by side
SpecificationScania R 650 A4x2Scania S 770 A4x2, tractor unit (2021–2024)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2021Registeredcentral 90% of records2021–2024Registeredcentral 90% of records
Engine power478 kWDeclared566 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO VI C, EURO VI DRegisteredEURO VI D, EURO VI ERegistered
Gross vehicle weight18,000–22,000 kgRegisteredmedian 20,500 kg, across 16 type-approval versions and 4 records without one19,000–23,000 kgRegisteredmedian 21,000 kg, across 23 type-approval versions and 4 records without one
Kerb weight7,844–9,347 kgRegisteredmedian 8,914 kg, over 32 registrations8,352–9,677 kgRegisteredmedian 9,152 kg, over 51 registrations
Wheelbase3,600–3,950 mmRegisteredmedian 3,750 mm, over 32 registrations3,750–3,950 mmRegisteredmedian 3,750 mm, over 51 registrations
Overall length5,810–6,320 mmRegisteredmedian 6,120 mm, over 32 registrations5,960–6,320 mmRegisteredmedian 6,120 mm, over 51 registrations
Overall height3,510–4,000 mmRegisteredmedian 4,000 mm, over 8 registrations3,790–4,000 mmRegisteredmedian 3,990 mm, over 43 registrations
Declared fuel, long haul32.8 l/100 km Declaredmedian; 31.6–38.5 l/100 km across 25 declared configurations31.2 l/100 km Declaredmedian; 28.6–34.7 l/100 km across 148 declared configurations
CO₂ per tonne-km44.4 g Declaredmedian; 42.8–52.1 g42.3 g Declaredmedian; 38.84–47.03 g

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

What the numbers actually say

There is 1.6 l/100 km between these two (5.1%). 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 1,920 litres a year (£2,688). The declared figures for one of them alone span 6.9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

R 650 A4x2 full specificationS 770 A4x2, tractor unit (2021–2024) full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Scania R 650 A4x239,360 litres
£55,104 at the assumed price
Scania S 770 A4x2, tractor unit (2021–2024)37,440 litres
£52,416 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.