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 299 verified sales, the 1988 is the most affordable at $14,426. The 1987 trades most often (122 verified sales). The 1990 has held its value best, worth 37% of its original MSRP. No comparable sale since Mar 4, 2026, so the 1990's value may not reflect today's market.
Data: DriveIndex. 5 model years with at least 10 verified sales each, latest sale Oct 26, 2026. Methodology
Porsche 928 S4 Value by Model Year
| Year | Value | Vs. original MSRP | Verified sales | For sale |
|---|---|---|---|---|
| 1991 928 S4 | $18,351No comparable sale since Apr 2025 | 26% | 16 | 1 |
| 1990 928 S4 | $26,013No comparable sale since Mar 2026 | 37% | 15 | — |
| 1989 928 S4 | $21,858 | 31% | 65 | 4 |
| 1988 928 S4 | $14,426 | 22% | 81 | 3 |
| 1987 928 S4 | $17,955 | 30% | 122 | 2 |
Value is DriveIndex's market 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?
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.
Or see the best months to buy with Collector ($39.99/month), or start with a free account.
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 299 verified sales, the 1988 is the most affordable at $14,426. The 1987 trades most often (122 verified sales). The 1990 has held its value best, worth 37% of its original MSRP. No comparable sale since Mar 4, 2026, so the 1990's value may not reflect today's market. The table on this page lists every model year with its market value, its value against its original MSRP and how many have sold.
Which Porsche 928 S4 year is the cheapest?
The 1988 Porsche 928 S4 is the most affordable year with enough verified sales to compare, currently valued at $14,426. The most valuable is the 1990, at $26,013. No comparable sale since Mar 4, 2026, so the 1990's value may not reflect today's market.
Which Porsche 928 S4 year holds its value best?
The 1990 Porsche 928 S4 is worth 37% of its original MSRP of $70,900, the best of the years with enough verified sales to compare. That compares its DriveIndex value with the sticker price when new, not adjusted for inflation. No comparable sale since Mar 4, 2026, so the 1990's value may not reflect today's market.
How much is a Porsche 928 S4 worth?
Depending on the model year, a Porsche 928 S4 is worth from $14,426 to $26,013 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 and how that compares with its original price. Whether each year is appreciating, stable or depreciating is DriveIndex's Value Signal, which Pro members see for every year along with a 1–5 year projection.