median; 33.2–43.4 across 38 declared configurations
Iveco S-Way, 357 kW, 4x2 tractor unit (2022–2023) and Iveco X-Way, 353 kW, 4x2 tractor unit side by side
Specification
Iveco S-Way, 357 kW, 4x2 tractor unit (2022–2023)
Iveco X-Way, 353 kW, 4x2 tractor unit
Vehicle form
Tractor unit (BC)Registered
Tractor unit (BC)Registered
Axle configuration
4×2Declared
4×2Declared
Registered new
2022–2023Registeredcentral 90% of records
2019–2022Registeredcentral 90% of records
Engine power
357 kWDeclared
353 kWDeclared
Engine displacement
12.9 litresDeclared
11.1 litresDeclared
Gearbox
automatedDeclared
automated, manualDeclared
Gross vehicle weight
19,000–20,000 kgDeclaredmedian 20,000 kg, across 2,734 declared configurations
20,000–20,500 kgDeclaredmedian 20,500 kg, across 274 declared configurations
Declared fuel, long haul
30.8 l/100 km Declaredmedian; 28.8–35.4 l/100 km across 1,795 declared configurations
38 l/100 km Declaredmedian; 33.2–43.4 l/100 km across 38 declared configurations
CO₂ per tonne-km
41.76 g Declaredmedian; 39.11–48.06 g
51.5 g Declaredmedian; 44.95–58.9 g
Fuel and CO₂: long haul at 19.3 t, 2022 declarations.
What the numbers actually say
The Iveco S-Way, 357 kW, 4x2 tractor unit (2022–2023) declared 7.2 l/100 km less (23.3%) 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 8,640 litres a year, or £12,096. A gap this size is outside the 10% tolerance of declared figures.
