The Quon is powered by the highly fuel-efficient GH11 engine, in ranges of 257kW - 302kW to suit each particular application and market requirement. The high power and torque performance, combined with a flat curve at peak output, delivered by the GH11 engine reduces the amount of shifting required with gears. Extra Engine Brake (EEB) is available as an option that can automatically shift down through gears for more effective engine braking, resulting in easier driving such as long haul downhill highways. The GH11 engine is designed to deliver smooth driving under any driving situation, such as hilly roads, long haul intercity journeys or any type of rough roads. Oil and fuel filters have been designed to be located around the bottom of the engine, all close together for easier maintenance. The filter capacity has been increased for longer intervals between maintenance and servicing. The entire power train has been designed to be more environmentally friendly and improve fuel efficiency, at levels that clearly exceed that required of Euro3 regulations.