A Grand Prix White 1988 Porsche 928 S4 with original paint and service records is now listed on Hagerty Marketplace.
A standout example of Porsche’s boldest grand touring experiment, a 1988 Porsche 928 S4, has surfaced on the Hagerty Marketplace, offering collectors a rare blend of originality, performance, and preservation.
Finished in Grand Prix White over black leather, this California-kept coupe is powered by Porsche’s 5.0-liter 32-valve V8, producing 316 horsepower and 318 pound-feet of torque. Introduced as a range-topping model in 1987, the 928 S4 brought more refined aerodynamics, a redesigned rear spoiler, and a rounded front fascia—updates that gave the GT a sleek, modern presence. The 1988 model year added refinement and subtle mechanical tweaks, continuing the car's evolution as a high-speed luxury tourer.
The example listed for sale features a four-speed automatic transaxle and near-perfect 50/50 weight distribution—key to the 928’s acclaimed balance and driving poise. Recent maintenance includes emergency brake pad replacement, and the car comes equipped with 17-inch wheels wrapped in Yokohama Advan Sport tires. The factory stereo has been replaced with a modern JVC head unit, but the remainder of the car remains original, according to the seller.
Included with the sale are a trickle charger, car cover, spare key, cargo net, and wheel locks. While minor paint blemishes and a slight transmission fluid leak are noted, the seller emphasizes that the car “runs and drives beautifully” and has always been garaged. The dashboard has been rebuilt with new bulbs and odometer gears, and the leather interior shows no rips or cracks.
Backed by a clean CARFAX and a decade-long ownership history, this 928 S4 offers a compelling opportunity for enthusiasts seeking a clean, well-preserved grand tourer that’s increasingly recognized as a future classic. See it here.
