In the UAE, a medium-duty lorry (like an Isuzu NPR or Mitsubishi Fuso Fighter) idling with the AC on maximum to combat summer heat can consume between 2.5 to 4.5 litres of fuel per hour. The final cost in AED depends critically on the fuel type and current Dubai pump prices. For a diesel lorry, this translates to an hourly cost of 9-16 AED; for a petrol model running on Special 95, it can be 12-22 AED per hour. This is a significant operational expense for fleet owners. A key factor often overlooked is the vehicle's GCC specification, which includes a larger radiator and more robust AC compressor designed for 45°C+ temperatures, but this also increases the engine load compared to non-GCC specs. Based on a common fleet scenario of a 2022 Toyota Hilux (2.8L diesel) used for daily deliveries with 4 hours of daily idling time in Dubai summer, the monthly extra fuel cost just for AC idling can exceed 1,500 AED. This contributes directly to a higher Total Cost of Ownership (TCO). The TCO for such a vehicle, factoring in typical annual depreciation of ~15% as per used-market trends on Dubizzle, financing, RTA Dubai registration, and this excessive fuel use, makes the cost-per-km for stop-start urban delivery much higher than pure highway running. Regular maintenance of the AC system, as advised by RTA Dubai vehicle inspection guidelines, is non-negotiable to prevent even higher fuel consumption from a struggling compressor. MOI UAE also emphasizes the risks of excessive idling in enclosed spaces. The financial logic is clear: minimizing unnecessary idling is not just about comfort, but a direct bottom-line calculation for any business operating vehicles in the Emirates.
