Originally conceived as the successor to the 911, the Porsche 928 ultimately carved out its own place in automotive history as one of the finest grand touring cars ever built. By the time the S4 debuted for the 1987 model year, Porsche had significantly refined the platform with more power, improved aerodynamics, and updated styling, transforming it into a true high-speed GT capable of crossing continents in comfort. Showing 128,094 miles, this 1988 Porsche 928 S4 is finished in elegant Slate Grey Metallic over a Gray leather interior. Featuring a power sunroof, forged alloy wheels, an aftermarket exhaust, and Porsche’s renowned front-engine V8 layout, this S4 represents one of the most sophisticated and underrated performance cars of its era.