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

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

Scania R 770 A4x2

2021–2025 · 566 kW
31.3l/100 km
median; 29.2–34.2 across 15 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 770 A4x2 and Scania S 770 A4x2, tractor unit (2021–2024) side by side
SpecificationScania R 770 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 new2021–2025Registeredcentral 90% of records2021–2024Registeredcentral 90% of records
Engine power566 kWDeclared566 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI ERegisteredEURO VI D, EURO VI ERegistered
Gross vehicle weight19,500–22,000 kgRegisteredmedian 22,000 kg, across 4 type-approval versions and 1 record without one19,000–23,000 kgRegisteredmedian 21,000 kg, across 23 type-approval versions and 4 records without one
Kerb weight8,607–9,085 kgRegisteredmedian 8,695 kg, over 5 registrations8,352–9,677 kgRegisteredmedian 9,152 kg, over 51 registrations
Wheelbase3,750–3,950 mmRegisteredmedian 3,750 mm, over 5 registrations3,750–3,950 mmRegisteredmedian 3,750 mm, over 51 registrations
Overall length5,960–6,160 mmRegisteredmedian 6,120 mm, over 5 registrations5,960–6,320 mmRegisteredmedian 6,120 mm, over 51 registrations
Overall height3,500–4,000 mmRegisteredmedian 3,800 mm, over 3 registrations3,790–4,000 mmRegisteredmedian 3,990 mm, over 43 registrations
Declared fuel, long haul31.3 l/100 km Declaredmedian; 29.2–34.2 l/100 km across 15 declared configurations31.2 l/100 km Declaredmedian; 28.6–34.7 l/100 km across 148 declared configurations
CO₂ per tonne-km42.39 g Declaredmedian; 39.55–46.4 g42.3 g Declaredmedian; 38.84–47.03 g

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

What the numbers actually say

There is 0.1 l/100 km between these two (0.3%). 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 120 litres a year (£168). The declared figures for one of them alone span 6.1 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

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

Fuel over a year

120,000 km · assumed price
Scania R 770 A4x237,560 litres
£52,584 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.