One of the rarest variants of the C126 Mercedes-Benz S-Class Coupe is the 560SEC 5.6 AMG. The 5.6 AMG was introduced in 1986 and was based on the 560 SEC, but featured a raft of tuning by AMG. The most notable changes were the tuned 5.6L V8 engine, and the AMG 'Wide Body' bodykit. As these cars were created before AMG was acquired by Mercedes-Benz, they were built in very limited numbers, with production ending in 1989.