Kenyan operators often debate which HiAce engine is best. The classic 5L engine is praised for durability and simple manual mechanics, making it ideal for rugged rural routes. The 2KD offers more power and efficiency, especially for long inter-city trips, though proper maintenance is key. The 1KD packs turbocharged energy, great for hilly regions like Central Kenya, but requires cleaner fuel and timely servicing to avoid injector issues. Each engine has strengths, but the decision depends on route distance, terrain, and expected operational workload. Proper care ensures all engines deliver long-term value.