Audi 4000S Ignition Systems are designed for this Audi 4000 that is the equivalent to European version called the Audi 80. These audi 4000S Ignition Systems are essential to upgrade this sensation of a vehicle that was produced for around 40 years (from 1966-1996). Initially the Audi 80 was essentially the Volkswagen Passat and it eventually diverged from its Volkswagen counterpart in the mid 1970s. In the United States the Audi 80 was initially called the FOX for a brief stint and then it took on the 4000 name in 1980. The vehicle was designed by Italian designer Giorgetto Giugiaro. This vehicle proved to be quite profitable because it borrowed parts from many of its counterparts at audi and did not require intire part redesigns. View our inventory of Audi 4000S Ignition Systems. These Audi 4000S Ignition Systems were designed to suit even the pickiest Audi enthusiast. The ignition system consists of several components that work together to start and keep the car running. The ignition system can consist of the battery, spark plugs, spark plug wires, distribution block and ignition coil. These components work together to ignite the gas/air mixture that enters the piston. The battery provides the energy the ignition coil increases the voltage significantly like a transformer and the spark plug wires transfers the energy to the spark plugs which ignite the gas/air mixture. If any of these components doesn't function properly the car may run poorly or not at all.