Isuzu D-Max 1.9 models are widely recognized for their excellent fuel efficiency. In a real-world long-distance test, a D-Max 1.9 Ddi Double Cab 4×2 manual covered 1,431 km using only 73.82 liters of fuel, equaling an impressive consumption rate of 5.1L/100km[2][3]. This was achieved at an average speed of 100 km/h, demonstrating the engine’s ability to deliver outstanding economy on extended journeys.
Official figures and other real-world feedback report an average combined cycle consumption of approximately 6.9–8L/100km depending on the model, driving conditions, and load[1][4]. For example, a comprehensive efficiency challenge saw the D-Max 1.9 averaging 7.2L/100km while carrying a full load through challenging terrain, surpassing the manufacturer’s claim of 8L/100km[1]. In mixed urban and off-road use, actual consumption may reach around 8.8L/100km[4]. Real user experiences in hilly, open-road conditions regularly show averages around 11-13km/L (7.6–9L/100km)[6].
Isuzu’s latest 1.9L turbo diesel engine not only delivers 110kW–164hp and 350Nm of torque, but also features advanced fuel injection, a high-efficiency turbo, and various low-friction components specifically designed to reduce fuel consumption and running costs[2][3][5]. Manufacturer claims for the D-Max 1.9 vary slightly depending on market and body style: estimates range from 6.9L/100km ADR rating, to real-world figures of 9L/100km in combined driving[4][5].
References
- [1] The New Isuzu D-Max Proves Efficiency With A Single Tank
- [2] Road-Tripping with ISUZU D-Max: An Experience in Fuel-Efficiency
- [3] Exceptional fuel efficiency in ISUZU D-MAX 1.9 Ddi range | News
- [4] 2023 Isuzu D-Max review: 1.9-litre SX 4×4
- [5] Isuzu D’Max 2025 (1.9d 164 hp) 0-100 & Fuel Consumption Tests
- [6] Real world consumption on 1.9? – 4×4 Community Forum