Comparison · 6×2 road tractor · long haul at 19.3 t

Scania R 520 B6x2, road tractor (2019–2021) vs Scania R 540 B6x2, road tractor (2020–2022)

Scania R 520 B6x2, road tractor (2019–2021)

2019–2021 · 382 kW
35.7l/100 km
median; 35.6–35.9 across 4 declared configurations

Scania R 540 B6x2, road tractor (2020–2022)

2020–2022 · 397 kW
32.9l/100 km
median; 32.7–36 across 6 declared configurations
Scania R 520 B6x2, road tractor (2019–2021) and Scania R 540 B6x2, road tractor (2020–2022) side by side
SpecificationScania R 520 B6x2, road tractor (2019–2021)Scania R 540 B6x2, road tractor (2020–2022)
Vehicle formRoad tractor (BD)RegisteredRoad tractor (BD)Registered
Axle configuration6×2Declared6×2Declared
Registered new2019–2021Registeredcentral 90% of records2020–2022Registeredcentral 90% of records
Engine power382 kWDeclared397 kWDeclared
Engine displacement16.4 litresDeclared12.7 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight28,000–30,000 kgDeclaredmedian 28,000 kg, across 13 declared configurations28,000–30,000 kgDeclaredmedian 30,000 kg, across 33 declared configurations
Declared fuel, long haul35.7 l/100 km Declaredmedian; 35.6–35.9 l/100 km across 4 declared configurations32.9 l/100 km Declaredmedian; 32.7–36 l/100 km across 6 declared configurations
CO₂ per tonne-km48.4 g Declaredmedian; 48.3–48.6 g44.6 g Declaredmedian; 44.28–48.7 g

Fuel and CO₂: long haul at 19.3 t, 2020 declarations.

What the numbers actually say

There is 2.8 l/100 km between these two (8.5%). 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 3,360 litres a year (£4,704). 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 R 520 B6x2, road tractor (2019–2021)42,840 litres
£59,976 at the assumed price
Scania R 540 B6x2, road tractor (2020–2022)39,480 litres
£55,272 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.