Best Porsche 928 S4 Year to Buy
There is no single best Porsche 928 S4 year: the right one depends on your budget and what you want from the car. Across 255 verified sales, the 1987 is the most affordable at $16,962 and trades most often (105 verified sales). The 1989 has held its value best, now worth 45% of its original MSRP.
Data: DriveIndex. 5 model years with at least 10 verified sales each, latest sale Sep 18, 2026. Methodology
Porsche 928 S4 Value by Model Year
| Year | Value today | Vs. original MSRP | Verified sales | For sale now |
|---|---|---|---|---|
| 1991 928 S4 | $20,268 | 28% | 12 | 1 |
| 1990 928 S4 | $26,009 | 37% | 17 | — |
| 1989 928 S4 | $31,665 | 45% | 53 | — |
| 1988 928 S4 | $24,328 | 38% | 68 | 1 |
| 1987 928 S4 | $16,962 | 28% | 105 | 1 |
Value today is DriveIndex's current value for each year, from verified sales. “Vs. original MSRP” compares it with the sticker price when new, not adjusted for inflation: 100% means it is worth exactly what it cost. Years with fewer than 10 verified sales are listed but not ranked.
Which 928 S4 year is appreciating right now?
The table shows what each year is worth. Pro adds the direction: the live Value Signal for every year, how confident it is, a 1–5 year projection, and every sold price behind it. Collector adds the best months to buy and an estimated market-bottom date.
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Best Porsche 928 S4 Year: Frequently Asked Questions
What is the best Porsche 928 S4 year to buy?
There is no single best Porsche 928 S4 year: the right one depends on your budget and what you want from the car. Across 255 verified sales, the 1987 is the most affordable at $16,962 and trades most often (105 verified sales). The 1989 has held its value best, now worth 45% of its original MSRP. The table on this page lists every model year with its value today, its value against its original MSRP and how many have sold.
Which Porsche 928 S4 year is the cheapest?
The 1987 Porsche 928 S4 is the most affordable year with enough verified sales to compare, currently valued at $16,962. The most valuable is the 1989, at $31,665.
Which Porsche 928 S4 year holds its value best?
The 1989 Porsche 928 S4 is now worth 45% of its original MSRP of $70,900, the best of the years with enough verified sales to compare. That compares today's value with the sticker price when new, not adjusted for inflation.
How much is a Porsche 928 S4 worth?
Depending on the model year, a Porsche 928 S4 is worth from $16,962 to $31,665 today, based on verified sales. Mileage, condition and options move any single car's price; each year's page shows its recent sales.
Which Porsche 928 S4 year is appreciating?
This page shows what each year is worth today and how that compares with its original price. Whether each year is appreciating, stable or depreciating right now is DriveIndex's Value Signal, which Pro members see for every year along with a 1–5 year projection.