The Pontiac Polaris was the proposed name for a Pontiac-badged twin of the Chevrolet Corvair. Although a number of full-size mockups of the Polaris were built by the General Motors Styling Studios, the car was not produced. At the time Pontiac chief engineer John Z. DeLorean was not a proponent of the Corvair's rear-mounted, air-cooled six-cylinder engine.

The division did use the Corvair's transaxle in the Pontiac Tempest compact, which had a front-mounted, water-cooled four-cylinder engine, and a flexible driveshaft leading to the rear-mounted transaxle.