Comparison · 4×2 lorry · long haul at 14 t
MAN TGX 18.420 4x2, rigid lorry (2017–2019) vs Volvo FM, 278 kW, 4x2 rigid lorry
MAN TGX 18.420 4x2, rigid lorry (2017–2019)
2017–2019 · 309 kW
33l/100 km
median; 31.5–35 across 67 declared configurations
Volvo FM, 278 kW, 4x2 rigid lorry
2019 · 278 kW
34.2l/100 km
median; 32–37.8 across 24 declared configurations
What the numbers actually say
There is 1.2 l/100 km between these two (3.6%). 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 1,440 litres a year (£2,016). The declared figures for one of them alone span 5.8 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 priceMAN TGX 18.420 4x2, rigid lorry (2017–2019)39,600 litres
£55,440 at the assumed price
Volvo FM, 278 kW, 4x2 rigid lorry41,040 litres
£57,456 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.