Comparison · 4×2 lorry · long haul at 14 t

Iveco Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021) vs Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry

Iveco Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021)

2019–2021 · 243 kW

35.8l/100 km

median; 34.3–36.1 across 3 declared configurations

Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry

2017–2023 · 240 kW

33.6l/100 km

median; 31.6–40.7 across 14 declared configurations

Iveco Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021) and Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry side by side
Specification	Iveco Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021)	Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry
Vehicle form	Lorry (BA)Registered	Lorry (BA)Registered
Axle configuration	4×2Declared	4×2Declared
Registered new	2019–2021Registeredcentral 90% of records	2017–2023Registeredcentral 90% of records
Engine power	243 kWDeclared	240 kWDeclared
Engine displacement	8.7 litresDeclared	10.7 litresDeclared
Gearbox	automated, automatic, manualDeclared	automated, manualDeclared
Emission class	Not recorded	EURO VI A, EURO VI C, EURO VI ERegistered
Gross vehicle weight	18,000–20,000 kgDeclaredmedian 20,000 kg, across 44 declared configurations	18,000–21,500 kgRegisteredmedian 19,500 kg, over 8 registrations
Kerb weight	Not recorded	10,805–18,600 kgRegisteredmedian 14,530 kg, over 8 registrations
Wheelbase	Not recorded	3,600–4,500 mmRegisteredmedian 4,200 mm, over 8 registrations
Overall length	Not recorded	6,750–8,990 mmRegisteredmedian 7,850 mm, over 8 registrations
Overall height	Not recorded	3,600 mmRegistered
Declared fuel, long haul	35.8 l/100 km Declaredmedian; 34.3–36.1 l/100 km across 3 declared configurations	33.6 l/100 km Declaredmedian; 31.6–40.7 l/100 km across 14 declared configurations
CO₂ per tonne-km	67 g Declaredmedian; 64.2–67.4 g	62.9 g Declaredmedian; 59.06–76 g

Fuel and CO₂: long haul at 14 t, 2021 declarations.

What the numbers actually say

There is 2.2 l/100 km between these two (6.5%). 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 2,640 litres a year (£3,696). The declared figures for one of them alone span 9.1 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021) full specification Arocs, 240 kW, 4x2 rigid lorry full specification

Fuel over a year

120,000 km · assumed price

Iveco Stralis, 243 kW, 4x2 rigid lorry, 8.7 L (2019–2021)42,960 litres

£60,144 at the assumed price

Mercedes-Benz Arocs, 240 kW, 4x2 rigid lorry40,320 litres

£56,448 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.