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

MAN TGS 18.470 4x2, tractor unit (2019–2023) vs Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)

MAN TGS 18.470 4x2, tractor unit (2019–2023)

2019–2023 · 346 kW
31.8l/100 km
median; 26.9–35.7 across 382 declared configurations

Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)

2021–2023 · 345 kW
34.4l/100 km
median; 32.4–37.5 across 21 declared configurations
MAN TGS 18.470 4x2, tractor unit (2019–2023) and Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023) side by side
SpecificationMAN TGS 18.470 4x2, tractor unit (2019–2023)Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2019–2023Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power346 kWDeclared345 kWDeclared
Engine displacement12.4 litresDeclared12.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Gross vehicle weight17,000–21,000 kgDeclaredmedian 18,600 kg, across 1,858 declared configurations19,500–23,000 kgDeclaredmedian 21,000 kg, across 58 declared configurations
Declared fuel, long haul31.8 l/100 km Declaredmedian; 26.9–35.7 l/100 km across 382 declared configurations34.4 l/100 km Declaredmedian; 32.4–37.5 l/100 km across 21 declared configurations
CO₂ per tonne-km43.1 g Declaredmedian; 36.51–48.5 g46.6 g Declaredmedian; 43.98–50.85 g

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

What the numbers actually say

There is 2.6 l/100 km between these two (8.1%). 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 3,120 litres a year (£4,368). The declared figures for one of them alone span 8.8 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
MAN TGS 18.470 4x2, tractor unit (2019–2023)38,160 litres
£53,424 at the assumed price
Volvo FMX, 345 kW, 4x2 tractor unit, 12.8 L (2021–2023)41,280 litres
£57,792 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.