The early '70s saw a time of great change for the ... and best of all, the Pontiac Bonneville SSEi came with a supercharged 3800 V6. With up to 240 hp by the late '90s and its four-speed automatic ...

The brand's decline started in the mid to late '70s as new emissions and corporate ... support is robust for both models. Pontiac first used the Bonneville name on a 1954 2-seat show car with ...

Prices shown are the prices you can expect to pay for a 1970 Pontiac Bonneville 2 Door Convertible across different levels of condition. Edit options.

The Pontiac Bonneville entered 1998 with safer next-gen airbags. Aside from that, the only other changes were minor ones made to trim different levels. For 1999, OnStar was now offered as an option.