The fourth generation of Pontiac Bonneville was introduced for the 1965 model year. The fourth generation of Bonneville saw a drastic re-styling, although the platform was largely unchanged. The fourth generation Bonneville was fitted with a range of V8 engines and was available in a variety of two or four door body styles. The fourth generation Bonneville was in production until 1970 and was replaced by the Fifth Generation Pontiac Bonneville