The Zender Vision 1S was a concept car introduced on the Frankfurt Motor Show on 1983.
The Vision 1S was a development of the Zender Vision 1 from 1983. The vehicle also used the Audi Quattro engine but it was fitted with a different camshaft and larger intake and exhaust ports. This made the engine produced 40 bhp more than the standard engine.
The engine was a 2144cc 5-cylinder unit which produced 240bhp at 5500rpm. The top speed was 240km/h.
The chassis also came from Quattro. The Vision 1S was a one-off and small batch of production cars was thought about. The length of the car was 4520mm, the width of the car was 1770mm and it was 1150mm high.
Source: https://classiccars.fandom.com/wiki/Zender_Vision_1_S