928GT 5.0L 1989-91

Starting from 1987, the overall exterior design of the 928 underwent a significant revision, setting the template for its appearance until the end of production in 1995. This redesign integrated the front spoiler into the nose, resulting in a smoother overall profile that aligned with contemporary design preferences, departing from the angular, shark-nose wedge of the original cars. Additionally, the rear spoiler transitioned into a separate wing rather than being an integrated piece, and side skirts were introduced. The rear tail-light configuration was updated with more modern light covers, moving away from the inset design of the original models.

After 1986, the 16v engine was replaced by the Porsche 32v 5.0 L V8, which remained in use until the discontinuation of the 928 in 1995. Alongside the water-cooled V8 engine, Porsche continued to employ a transaxle in the 928 to maintain a balanced 50/50 front/rear weight distribution. Despite its heavier build, the performance of early 928 models was comparable to the contemporary 911. The body, crafted by Wolfgang Möbius under Anatole Lapine's guidance, utilized aluminum for various components such as the doors, front wing, front fenders, and bonnet, contributing to weight reduction. The chassis was constructed from galvanized steel, providing structural integrity.

Notable features of the 928 included the incorporation of the "Weissach Axle," enhancing stability during braking and turns, and the distinctive pop-up headlamps inspired by the Lamborghini Miura. Internally classified as a 2+2, the 928 featured two small rear seats that could fold down to expand the luggage area. However, due to the transmission hump, rear seat legroom was limited, primarily suitable for short trips or accommodating children.

Innovations continued internally, with the introduction of a digital trip computer in the dashboard for the 1989 model year. Porsche introduced the 928 GT in the late winter of 1988/89, offering a balance between the Club Sport and S4 models in terms of equipment. Notable additions included the ZF 40% limited-slip differential and a manual gearbox. Further enhancements came in the 1990 model year, with the inclusion of RDK tire pressure monitoring and a 0-100% variable ratio limited-slip differential called PSD in both GT and S4 models for all markets.