AllTruckData
Comparison · 4×2 lorry · long haul at 14 t

Scania G 420 B4x2 vs Scania S 420 B4x2

Scania G 420 B4x2

2023–2026 · 309 kW
26.7l/100 km
median; 25.6–27.5 across 10 declared configurations

Scania S 420 B4x2

2022–2025 · 309 kW
25.6l/100 km
median; 24.9–26.2 across 3 declared configurations
Scania G 420 B4x2 and Scania S 420 B4x2 side by side
SpecificationScania G 420 B4x2Scania S 420 B4x2
Vehicle formLorry (BA)RegisteredLorry (BA)Registered
Axle configuration4×2Declared4×2Declared
Registered new2023–2026Registeredcentral 90% of records2022–2025Registeredcentral 90% of records
Engine power309 kWDeclared309 kWDeclared
Engine displacement12.7 litresDeclared12.7 litresDeclared
GearboxautomatedDeclaredautomatedDeclared
Emission classEURO VI ERegisteredEURO VI ERegistered
Gross vehicle weight18,600–23,000 kgRegisteredmedian 21,000 kg, over 16 registrations19,000–22,000 kgRegisteredmedian 19,500 kg, over 3 registrations
Kerb weight9,563–14,131 kgRegisteredmedian 11,252 kg, over 16 registrations11,135–13,046 kgRegisteredmedian 12,113 kg, over 3 registrations
Wheelbase3,350–5,550 mmRegisteredmedian 4,950 mm, over 16 registrations5,550–6,750 mmRegisteredmedian 5,950 mm, over 3 registrations
Overall length6,310–9,720 mmRegisteredmedian 9,050 mm, over 16 registrations9,710–11,930 mmRegisteredmedian 10,060 mm, over 3 registrations
Overall height3,300–3,960 mmRegisteredmedian 3,520 mm, over 13 registrations3,990–4,000 mmRegisteredmedian 3,990 mm, over 3 registrations
Declared fuel, long haul26.7 l/100 km Declaredmedian; 25.6–27.5 l/100 km across 10 declared configurations25.6 l/100 km Declaredmedian; 24.9–26.2 l/100 km across 3 declared configurations
CO₂ per tonne-km49.9 g Declaredmedian; 47.79–51.35 g47.93 g Declaredmedian; 46.51–48.97 g

Fuel and CO₂: long haul at 14 t, 2022 declarations.

What the numbers actually say

There is 1.1 l/100 km between these two (4.2%). 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 1,320 litres a year (£1,848). The declared figures for one of them alone span 1.9 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

G 420 B4x2 full specificationS 420 B4x2 full specificationThe fuel ranking

Fuel over a year

120,000 km · assumed price
Scania G 420 B4x232,040 litres
£44,856 at the assumed price
Scania S 420 B4x230,720 litres
£43,008 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.