Comparison · 8×4 lorry · construction at 12.9 t

Volvo FM, 345 kW, 8x4 rigid lorry, 10.8 L (2020–2024) vs Volvo FM, 345 kW, 8x4 rigid lorry, 12.8 L (2015–2024)

Volvo FM, 345 kW, 8x4 rigid lorry, 10.8 L (2020–2024)

2020–2024 · 345 kW
42.9l/100 km
median; 38.6–44.6 across 16 declared configurations

Volvo FM, 345 kW, 8x4 rigid lorry, 12.8 L (2015–2024)

2015–2024 · 345 kW
42.6l/100 km
median; 39.2–46.5 across 38 declared configurations
Volvo FM, 345 kW, 8x4 rigid lorry, 10.8 L (2020–2024) and Volvo FM, 345 kW, 8x4 rigid lorry, 12.8 L (2015–2024) side by side
SpecificationVolvo FM, 345 kW, 8x4 rigid lorry, 10.8 L (2020–2024)Volvo FM, 345 kW, 8x4 rigid lorry, 12.8 L (2015–2024)
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2020–2024Registeredcentral 90% of records2015–2024Registeredcentral 90% of records
Engine power345 kWDeclared345 kWDeclared
Engine displacement10.8 litresDeclared12.8 litresDeclared
Gearboxautomated, automaticDeclaredautomated, automaticDeclared
Emission classEURO VI D, EURO VI ERegisteredEEV K, EURO 6, EURO V, EURO VI, EURO VI B, EURO VI C, EURO VI D, EURO VI ERegistered
Gross vehicle weight37,000–44,000 kgRegisteredmedian 42,000 kg, over 7 registrations34,000–46,000 kgRegisteredmedian 43,000 kg, over 243 registrations
Kerb weight13,653–38,850 kgRegisteredmedian 16,906 kg, over 7 registrations10,947–43,600 kgRegisteredmedian 17,485 kg, over 243 registrations
Wheelbase5,720–7,050 mmRegisteredmedian 6,470 mm, over 7 registrations4,000–7,800 mmRegisteredmedian 6,450 mm, over 243 registrations
Overall length8,800–11,450 mmRegisteredmedian 9,130 mm, over 7 registrations8,200–14,200 mmRegisteredmedian 9,280 mm, over 243 registrations
Overall height3,070–3,950 mmRegisteredmedian 3,380 mm, over 5 registrations3,130–4,000 mmRegisteredmedian 3,750 mm, over 68 registrations
Declared fuel, construction42.9 l/100 km Declaredmedian; 38.6–44.6 l/100 km across 16 declared configurations42.6 l/100 km Declaredmedian; 39.2–46.5 l/100 km across 38 declared configurations
CO₂ per tonne-km87.1 g Declaredmedian; 78.25–90.4 g86.34 g Declaredmedian; 79.54–94.33 g

Fuel and CO₂: construction at 12.9 t, 2022 declarations.

What the numbers actually say

There is 0.3 l/100 km between these two (0.7%). 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 360 litres a year (£504). The declared figures for one of them alone span 7.3 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
Volvo FM, 345 kW, 8x4 rigid lorry, 10.8 L (2020–2024)51,480 litres
£72,072 at the assumed price
Volvo FM, 345 kW, 8x4 rigid lorry, 12.8 L (2015–2024)51,120 litres
£71,568 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.