Audi 100 Coupé S
The Audi 100 Coupé S is a sports fastback coupe Grand tourer class car manufactured by the German automaker Audi AG. The car was first presented at the Frankfurt Motor Show in 1969. Originally 30,687 units were produced. Technical specifications. The car came with a 4-cylinder in-line engine with a capacity of 1871 cubic cm. and was initially equipped with two carburetors with power output of 115 hp. In 1972, it changed to a single carburetor with 112 hp output. Coupé S V3/V4. In 1973, Audi, together with Porsche, developed two prototypes based  on the Audi 100 Coupé S. The first was named the "V3". It was equipped with a 928 prototype V8 engine with a power of 350 hp as well as the 928's rear wheel drive running gear. It had wide flared fenders to fit the wider track. The "V4" was another 100 Coupé S with the body widened by 4.3 inches to accommodate the 928's running gear and wider track.