Exhaust system Exhaust system An exhaust system is usually piping used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system design, the exhaust gas may flow through one or more of: An exhaust pipe must be carefully designed to carry toxic and/or noxious gases away from the users of the machine. Indoor generators and furnaces can quickly fill an enclosed space with poisonous exhaust gases such as hydrocarbons, carbon monoxide and nitrogen oxides, if they
What Car? car if they drive it gently and stick to speed limits, but don't resort to any unrealistically slow acceleration or special hypermiling techniques. These True MPG figures are published alongside the official government fuel economy data, that car manufacturers are legally obliged to include in brochures. In June 2012, "What Car?" launched an online car buying service called 'What Car Approved Used', which it claimed provides "peace of mind" to car buyers, by endorsing the "10 Points of Difference" promoted by the "National Franchised Dealers Association". The agreement came to a close in July 2015, and "What Car?" began to