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

Iveco S-Way, 309 kW, 4x2 tractor unit vs Scania S 420 A4x2

Iveco S-Way, 309 kW, 4x2 tractor unit

2020–2023 · 309 kW
31.7l/100 km
median; 29.9–36.1 across 50 declared configurations
Lower declared fuel

Scania S 420 A4x2

2022–2025 · 309 kW
25.2l/100 km
median; 24.7–27 across 29 declared configurations
Iveco S-Way, 309 kW, 4x2 tractor unit and Scania S 420 A4x2 side by side
SpecificationIveco S-Way, 309 kW, 4x2 tractor unitScania S 420 A4x2
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2020–2023Registeredcentral 90% of records2022–2025Registeredcentral 90% of records
Engine power309 kWDeclared309 kWDeclared
Engine displacement11.1 litresDeclared12.7 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classNot recordedEURO VI ERegistered
Gross vehicle weight19,000–20,000 kgDeclaredmedian 20,000 kg, across 126 declared configurations19,000–21,000 kgRegisteredmedian 19,000 kg, across 11 type-approval versions
Kerb weightNot recorded7,977–8,735 kgRegisteredmedian 8,461 kg, over 81 registrations
WheelbaseNot recorded3,750–3,950 mmRegisteredmedian 3,750 mm, over 81 registrations
Overall lengthNot recorded5,960–6,160 mmRegisteredmedian 5,960 mm, over 81 registrations
Overall heightNot recorded3,770–4,000 mmRegisteredmedian 3,980 mm, over 81 registrations
Declared fuel, long haul31.7 l/100 km Declaredmedian; 29.9–36.1 l/100 km across 50 declared configurations25.2 l/100 km Declaredmedian; 24.7–27 l/100 km across 29 declared configurations
CO₂ per tonne-km43.02 g Declaredmedian; 40.51–48.96 g34.11 g Declaredmedian; 33.51–36.58 g

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

What the numbers actually say

The Scania S 420 A4x2 declared 6.5 l/100 km less (25.7%) on the long haul at 19.3 t, 2022 declarations. At 120,000 km a year and an assumed £1.40 a litre, that is about 7,800 litres a year, or £10,920. A gap this size is outside the 10% tolerance of declared figures.

S-Way, 309 kW, 4x2 tractor unit full specificationS 420 A4x2 full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Iveco S-Way, 309 kW, 4x2 tractor unit38,040 litres
£53,256 at the assumed price
Scania S 420 A4x230,240 litres
£42,336 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.