The Opel Tech 1 Concept was a research vehicle and concept car developed by Opel, which was a subsidiary of General Motors at the time.

It was exhibited at the 1981 International Motor Show Germany (IAA) in Frankfurt.

The design targeted a peak of aerodynamics and reached a drag coefficient of 0.235 cw thanks in part to a panoramic windshield.

Some of the car's aerodynamic features made it into production form on both the 1984 Opel Kadett E and the 1986 Opel Omega – most evidently its front-end styling.

The Tech 1's wheel design entered into mass production as an alloy wheel option on top-spec models of the Opel Rekord E2/Vauxhall Carlton.