Porsche
928
The grand tourer that almost killed the 911 — now a cult classic. RevFolio holds 150 completed sales of this car and prices it within 20% on 56% of them, measured by hiding each sale and valuing it on the ones before.
By variant
Recent sales
| Date | Vehicle as sold | Miles | Sold |
|---|---|---|---|
| Oct 14, 2026 | RoW 1978 Porsche 928 5-Speed Project Bring a Trailer · manual | 93,206 | $25,250 |
| Oct 09, 2026 | 1984 Porsche 928S 5-Speed Bring a Trailer · manual | 40,000 | $30,000 |
| Oct 08, 2026 | 1981 Porsche 928 Cars & Bids · manual | 83,100 | $26,500 |
| Oct 06, 2026 | 35k-Mile 1987 Porsche 928 S4 Bring a Trailer · automatic | 35,000 | $40,500 |
| Sep 29, 2026 | 1979 Porsche 928 Bring a Trailer · manual | 48,000 | $28,000 |
| Sep 24, 2026 | 1985 Porsche 928S Bring a Trailer · automatic | 114,000 | $13,000 |
| Sep 21, 2026 | 1993 Porsche 928 GTS 5-Speed Bring a Trailer · manual | 71,000 | $85,500 |
| Sep 20, 2026 | 1981 Porsche 928 5-Speed Bring a Trailer · manual | 76,000 | $55,000 |
| Sep 19, 2026 | 1983 Porsche 928S 5-Speed Project Bring a Trailer · manual | 149,000 | $12,000 |
| Sep 16, 2026 | Euro 1978 Porsche 928 5-Speed Bring a Trailer · manual | — | $21,500 |
| Sep 11, 2026 | 1990 Porsche 928 S4 Bring a Trailer · automatic | 83,000 | $16,928 |
| Sep 05, 2026 | 1986.5 Porsche 928S Bring a Trailer · automatic | 139,000 | $13,500 |
How this car is valued
RevFolio holds 150 completed sales of the Porsche 928 from Bring a Trailer, Cars & Bids and Mecum, dated Jun 02, 2016 to Oct 14, 2026, 41 of them in the last twelve months. When each of those sales was hidden from the engine and valued on the sales before it, 56% came within 20% of the real price, and the typical miss was 18.1%. The median sale of the last twelve months is 56% below the twelve before it.
The engine keeps gearboxes apart where the sales show they price apart, reads each listing for disclosed damage, modifications and conversions, fits a mileage curve on the matched sales and weights the newest sales most. Every report prints the sales it used.
Questions this page answers
- What is a Porsche 928 worth?
- The Porsche 928 value depends on year, mileage, gearbox and condition. RevFolio values a specific car from completed auction sales.
- Where do the numbers come from?
- Completed auction sales only, from Bring a Trailer, Cars & Bids and Mecum, dated Jun 02, 2016 onward. No asking prices, no dealer listings, and no estimates for cars that never sold.
- How often does this update?
- Every Sunday, after the week’s sales from all three auction houses are collected. The page is re-rendered within the hour.
- What does 56% accuracy mean?
- When each past sale of this model was hidden from the engine and valued on the sales before it, 56% came within 20% of the real price. It is a measurement, not a promise, and it is printed on every report.