The Quon is powered by the highly fuel efficient GH13 engine, in the ranges of 270-360 kW variations to suit each particular application and market requirement. The high power and torque performance, combined with a flat torque curve at peak output, delivered by the GH13 engine reduces the amount of shifting required by the transmission. Extra Engine Brake (EEB) is available as an option which can automatically shift-down through gears for more effective engine braking, resulting in easier driving such as long haul downhill highways. The GH13 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 are located at 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 powertrain has been designed to be more environmentally-friendly and improve fuel efficiency, at levels that clearly exceed the requirements of Euro3 regulations.