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

MAN TGX 18.520 4x2, tractor unit (from 2023) vs Mercedes-Benz Actros, 375 kW, 4x2 tractor unit (2021–2023)

MAN TGX 18.520 4x2, tractor unit (from 2023)

2023–2026 · 375–382 kW (median 382)
28.5l/100 km
median; 26.7–33.4 across 618 declared configurations

Mercedes-Benz Actros, 375 kW, 4x2 tractor unit (2021–2023)

2021–2023 · 375 kW
29.8l/100 km
median; 27.2–39 across 2,557 declared configurations
MAN TGX 18.520 4x2, tractor unit (from 2023) and Mercedes-Benz Actros, 375 kW, 4x2 tractor unit (2021–2023) side by side
SpecificationMAN TGX 18.520 4x2, tractor unit (from 2023)Mercedes-Benz Actros, 375 kW, 4x2 tractor unit (2021–2023)
Vehicle formTractor unit for semi-trailer (BC)RegisteredTractor unit for semi-trailer (BC)Registered
Axle configuration4×2Declared4×2Declared
Registered new2023–2026Registeredcentral 90% of records2021–2023Registeredcentral 90% of records
Engine power375–382 kWDeclaredmedian 382 kW, across 1,893 declared configurations375 kWDeclared
Engine displacement12.4 litresDeclared12.8 litresDeclared
Gearboxautomated, manualDeclaredautomatedDeclared
Emission classEURO VI ERegisteredEURO 6, EURO VI, EURO VI D, EURO VI ERegistered
Gross vehicle weight18,000–21,000 kgRegisteredmedian 20,500 kg, across 42 type-approval versions and 26 records without one18,000–20,500 kgRegisteredmedian 19,000 kg, across 20 type-approval versions and 55 records without one
Kerb weight7,557–8,832 kgRegisteredmedian 7,983 kg, over 536 registrations7,320–8,830 kgRegisteredmedian 8,281 kg, over 106 registrations
Wheelbase3,600–3,900 mmRegisteredmedian 3,900 mm, over 536 registrations3,700–4,000 mmRegisteredmedian 3,700 mm, over 106 registrations
Overall length5,880–6,280 mmRegisteredmedian 6,180 mm, over 536 registrations5,860–6,550 mmRegisteredmedian 6,160 mm, over 106 registrations
Overall height3,330–4,000 mmRegisteredmedian 3,880 mm, over 516 registrations3,500–4,000 mmRegisteredmedian 3,950 mm, over 76 registrations
Declared fuel, long haul28.5 l/100 km Declaredmedian; 26.7–33.4 l/100 km across 618 declared configurations29.8 l/100 km Declaredmedian; 27.2–39 l/100 km across 2,557 declared configurations
CO₂ per tonne-km38.65 g Declaredmedian; 36.22–45.25 g40.34 g Declaredmedian; 36.84–52.86 g

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

What the numbers actually say

There is 1.3 l/100 km between these two (4.5%). 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 1,560 litres a year (£2,184). The declared figures for one of them alone span 11.8 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 TGX 18.520 4x2, tractor unit (from 2023)34,200 litres
£47,880 at the assumed price
Mercedes-Benz Actros, 375 kW, 4x2 tractor unit (2021–2023)35,760 litres
£50,064 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.