2. BMW M5 E28
The `80s brought a slight rise in power and liberty to experiment even further so, in 1984, BMW created history with the introduction of the first M5 model. Called E28 it was the ultimate version of popular 5-Series sedan. Under the hood was highly tuned 3.5-liter straight six engines with 265 to 288 HP (depending on the market). Although this not sound much today, for the mid-`80s it was unbelievable power paired with M-Performance tuned suspension and brakes which turned family sedan into a proper sports car.