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

Scania S 520 A4x2 vs Scania S 580 A4x2

Scania S 520 A4x2

2018–2021 · 382 kW
31.2l/100 km
median; 29.7–33 across 22 declared configurations

Scania S 580 A4x2

2019–2021 · 427 kW
32.3l/100 km
median; 30.7–34 across 57 declared configurations
Scania S 520 A4x2 and Scania S 580 A4x2 side by side
SpecificationScania S 520 A4x2Scania S 580 A4x2
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2018–2021Registeredcentral 90% of records2019–2021Registeredcentral 90% of records
Engine power382 kWDeclared427 kWDeclared
Engine displacement16.4 litresDeclared16.4 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI C, EURO VI DRegisteredEURO 6, EURO VI C, EURO VI DRegistered
Gross vehicle weight19,000–22,000 kgRegisteredmedian 20,500 kg, across 25 type-approval versions and 31 records without one19,000–22,000 kgRegisteredmedian 20,500 kg, across 23 type-approval versions and 18 records without one
Kerb weight8,275–10,650 kgRegisteredmedian 9,063 kg, over 218 registrations8,215–9,576 kgRegisteredmedian 9,125 kg, over 103 registrations
Wheelbase3,600–3,950 mmRegisteredmedian 3,750 mm, over 218 registrations3,600–3,950 mmRegisteredmedian 3,750 mm, over 103 registrations
Overall length5,810–6,520 mmRegisteredmedian 6,050 mm, over 218 registrations5,800–6,320 mmRegisteredmedian 6,060 mm, over 103 registrations
Overall height3,670–4,000 mmRegisteredmedian 3,990 mm, over 32 registrations3,840–4,000 mmRegisteredmedian 3,990 mm, over 26 registrations
Declared fuel, long haul31.2 l/100 km Declaredmedian; 29.7–33 l/100 km across 22 declared configurations32.3 l/100 km Declaredmedian; 30.7–34 l/100 km across 57 declared configurations
CO₂ per tonne-km42.3 g Declaredmedian; 40.3–44.7 g43.9 g Declaredmedian; 41.6–46.1 g

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

What the numbers actually say

There is 1.1 l/100 km between these two (3.5%). 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 1,320 litres a year (£1,848). The declared figures for one of them alone span 3.3 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 S 520 A4x237,440 litres
£52,416 at the assumed price
Scania S 580 A4x238,760 litres
£54,264 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.