The Isuzu KB 320 V6 typically has a fuel consumption of about 17.6 liters per 100 km (L/100km), which equates to approximately 5.7 km per liter (km/L), 16.1 miles per UK gallon, or 13.4 miles per US gallon under mixed (combined) driving conditions[3].
Real-world user reports indicate:
- In town: around 6.2 to 6.8 km/L with careful driving
- On the open road: up to 8.8 km/L
- Fuel consumption dropping further with a heavy load
These figures confirm that the KB 320 V6, especially the 3.2L 6VD1 V6 engine, is known for relatively high fuel consumption compared to smaller engines, with consumption varying based on driving style, load, and road conditions[5][8].