AllTruckData
Comparison · 8×4 lorry · construction at 12.9 t

Scania G 420 B8x4*4 vs Scania P 420 B8x4

Scania G 420 B8x4*4

2022–2023 · 309 kW
38.3l/100 km
median; 38–38.7 across 3 declared configurations

Scania P 420 B8x4

2022–2023 · 309 kW
41.7l/100 km
median; 40.4–41.9 across 5 declared configurations
Scania G 420 B8x4*4 and Scania P 420 B8x4 side by side
SpecificationScania G 420 B8x4*4Scania P 420 B8x4
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration8×4Declared8×4Declared
Registered new2022–2023Registeredcentral 90% of records2022–2023Registeredcentral 90% of records
Engine power309 kWDeclared309 kWDeclared
Engine displacement12.7 litresDeclared12.7 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Gross vehicle weight33,000–43,000 kgDeclaredmedian 37,000 kg, across 17 declared configurations36,000–50,000 kgDeclaredmedian 39,000 kg, across 28 declared configurations
Declared fuel, construction38.3 l/100 km Declaredmedian; 38–38.7 l/100 km across 3 declared configurations41.7 l/100 km Declaredmedian; 40.4–41.9 l/100 km across 5 declared configurations
CO₂ per tonne-km77.65 g Declaredmedian; 77.11–78.48 g84.49 g Declaredmedian; 81.99–84.94 g

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

What the numbers actually say

There is 3.4 l/100 km between these two (8.8%). 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 4,080 litres a year (£5,712).

G 420 B8x4*4 full specificationP 420 B8x4 full specification

Fuel over a year

120,000 km · assumed price
Scania G 420 B8x4*445,960 litres
£64,344 at the assumed price
Scania P 420 B8x450,040 litres
£70,056 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.