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

Scania R 540 A6x2/4 vs Volvo FH, 405 kW, 6x2 tractor unit (2020–2025)

Scania R 540 A6x2/4

2020–2022 · 397 kW

29.8l/100 km

median; 28.9–31.7 across 18 declared configurations

Volvo FH, 405 kW, 6x2 tractor unit (2020–2025)

2020–2025 · 405 kW

31.4l/100 km

median; 28.7–37.6 across 142 declared configurations

Scania R 540 A6x2/4 and Volvo FH, 405 kW, 6x2 tractor unit (2020–2025) side by side
Specification	Scania R 540 A6x2/4	Volvo FH, 405 kW, 6x2 tractor unit (2020–2025)
Vehicle form	Tractor unit for semi-trailer (BC)Registered	Tractor unit for semi-trailer (BC)Registered
Axle configuration	6×2Declared	6×2Declared
Registered new	2020–2022Registeredcentral 90% of records	2020–2025Registeredcentral 90% of records
Engine power	397 kWDeclared	405 kWDeclared
Engine displacement	12.7 litresDeclared	12.8 litresDeclared
Gearbox	automatedDeclared	automatedDeclared
Emission class	Not recorded	EURO 6, EURO VI, EURO VI D, EURO VI ERegistered
Gross vehicle weight	24,300–29,000 kgDeclaredmedian 27,000 kg, across 89 declared configurations	24,000–32,000 kgRegisteredmedian 27,000 kg, across 33 type-approval versions and 9 records without one
Kerb weight	Not recorded	8,629–10,727 kgRegisteredmedian 9,088 kg, over 106 registrations
Wheelbase	Not recorded	3,900–4,870 mmRegisteredmedian 4,100 mm, over 106 registrations
Overall length	Not recorded	6,310–7,200 mmRegisteredmedian 6,510 mm, over 106 registrations
Overall height	Not recorded	3,200–3,970 mmRegisteredmedian 3,820 mm, over 16 registrations
Declared fuel, long haul	29.8 l/100 km Declaredmedian; 28.9–31.7 l/100 km across 18 declared configurations	31.4 l/100 km Declaredmedian; 28.7–37.6 l/100 km across 142 declared configurations
CO₂ per tonne-km	40.41 g Declaredmedian; 39.2–43 g	42.55 g Declaredmedian; 38.87–50.93 g

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

What the numbers actually say

There is 1.6 l/100 km between these two (5.3%). 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 1,920 litres a year (£2,688). The declared figures for one of them alone span 8.9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

R 540 A6x2/4 full specification FH, 405 kW, 6x2 tractor unit (2020–2025) full specification The fuel ranking

Fuel over a year

120,000 km · assumed price

Scania R 540 A6x2/435,760 litres

£50,064 at the assumed price

Volvo FH, 405 kW, 6x2 tractor unit (2020–2025)37,680 litres

£52,752 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.