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

Scania R 580 A4x2 (2019–2021) vs Scania S 520 A4x2

Scania R 580 A4x2 (2019–2021)

2019–2021 · 427 kW
33l/100 km
median; 31.2–37.8 across 26 declared configurations

Scania S 520 A4x2

2018–2021 · 382 kW
31.2l/100 km
median; 29.7–33 across 22 declared configurations
Scania R 580 A4x2 (2019–2021) and Scania S 520 A4x2 side by side
SpecificationScania R 580 A4x2 (2019–2021)Scania S 520 A4x2
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2021Registeredcentral 90% of records2018–2021Registeredcentral 90% of records
Engine power427 kWDeclared382 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO VI C, EURO VI DRegisteredEURO VI C, EURO VI DRegistered
Gross vehicle weight19,000–22,000 kgRegisteredmedian 20,500 kg, across 17 type-approval versions and 9 records without one19,000–22,000 kgRegisteredmedian 20,500 kg, across 25 type-approval versions and 31 records without one
Kerb weight8,005–9,406 kgRegisteredmedian 8,829 kg, over 47 registrations8,275–10,650 kgRegisteredmedian 9,063 kg, over 218 registrations
Wheelbase3,600–3,950 mmRegisteredmedian 3,750 mm, over 47 registrations3,600–3,950 mmRegisteredmedian 3,750 mm, over 218 registrations
Overall length5,850–6,320 mmRegisteredmedian 5,960 mm, over 46 registrations5,810–6,520 mmRegisteredmedian 6,050 mm, over 218 registrations
Overall height3,480–4,000 mmRegisteredmedian 3,780 mm, over 10 registrations3,670–4,000 mmRegisteredmedian 3,990 mm, over 32 registrations
Declared fuel, long haul33 l/100 km Declaredmedian; 31.2–37.8 l/100 km across 26 declared configurations31.2 l/100 km Declaredmedian; 29.7–33 l/100 km across 22 declared configurations
CO₂ per tonne-km44.7 g Declaredmedian; 42.3–51.2 g42.3 g Declaredmedian; 40.3–44.7 g

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

What the numbers actually say

There is 1.8 l/100 km between these two (5.7%). 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 2,160 litres a year (£3,024). The declared figures for one of them alone span 6.6 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Fuel over a year

120,000 km · assumed price
Scania R 580 A4x2 (2019–2021)39,600 litres
£55,440 at the assumed price
Scania S 520 A4x237,440 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.