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

Scania G 420 B4x2 vs Scania R 420 B4x2

Scania G 420 B4x2

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

Scania R 420 B4x2

2022–2025 · 309 kW
26.1l/100 km
median; 25.4–27.6 across 19 declared configurations
Scania G 420 B4x2 and Scania R 420 B4x2 side by side
SpecificationScania G 420 B4x2Scania R 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 registrations19,000–21,000 kgRegisteredmedian 20,500 kg, over 4 registrations
Kerb weight9,563–14,131 kgRegisteredmedian 11,252 kg, over 16 registrations9,397–10,559 kgRegisteredmedian 9,533 kg, over 4 registrations
Wheelbase3,350–5,550 mmRegisteredmedian 4,950 mm, over 16 registrations5,350–6,350 mmRegisteredmedian 5,550 mm, over 4 registrations
Overall length6,310–9,720 mmRegisteredmedian 9,050 mm, over 16 registrations9,350–10,980 mmRegisteredmedian 9,930 mm, over 4 registrations
Overall height3,300–3,960 mmRegisteredmedian 3,520 mm, over 13 registrations3,950–4,000 mmRegisteredmedian 3,950 mm, over 4 registrations
Declared fuel, long haul26.7 l/100 km Declaredmedian; 25.6–27.5 l/100 km across 10 declared configurations26.1 l/100 km Declaredmedian; 25.4–27.6 l/100 km across 19 declared configurations
CO₂ per tonne-km49.9 g Declaredmedian; 47.79–51.35 g48.81 g Declaredmedian; 47.46–51.53 g

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

What the numbers actually say

There is 0.6 l/100 km between these two (2.2%). 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 720 litres a year (£1,008). The declared figures for one of them alone span 2.2 l/100 km across its configurations, so the specification ordered matters more than the choice between these two.

G 420 B4x2 full specificationR 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 R 420 B4x231,320 litres
£43,848 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.