PCarValues

Porsche 928 S4 Value & Price Guide

Real sold auction prices for the Porsche 928 S4, one trim of the 928 (1978–1995): median, value by model year and every recent sale. Updated weekly.

This page tracks sold prices for the Porsche 928 S4, one trim of the Porsche 928, read from auction listing titles. In the last 12 months (Mar 30, 2026 to Oct 26, 2026) our sample recorded 20 U.S.-dollar auction sales of model years 1987 to 1992. The median sold price was $28,339, the middle half sold between $20,200 and $32,600, and results ran from $8,500 to $85,000.

That is 11% above the $25,500 median for all Porsche 928 sales over the same window (79 sales), and the 928 S4 accounts for 25% of them.

By model year (years with at least 3 sales), 1988 cars had the lowest median at $19,000 (4 sales) and 1989 cars the highest at $30,400 (8 sales).

What drives value in this sample: manual cars had a $30,000 median (5 sales) against $23,750 for automatic (Sportomatic/Tiptronic) cars (14). Model year explains part of each gap, and condition, history and options matter most for any one car.

Price snapshot

Fair price range*$20,200–$32,600
Median sold (USD)$28,339
Low$8,500
High$85,000
Sales used20

*Fair price range = middle 50% (25th–75th percentile) of USD sold prices in this sample. Condition, mileage and options move any one car outside it.

Snapshot window: last 12 months. 27 sold cars (20 in USD), model years 1987–1992, sold Mar 30, 2026 to Oct 26, 2026. Non-USD sales are listed below in their original currency and left out of USD statistics.

Porsche 928 S4 value by model year

Model yearSalesMedianMiddle 50%
19876$23,500$20,200–$37,100
19884$19,000—
19898$30,400$28,400–$32,400

U.S.-dollar sales in the snapshot window. A median is shown for model years with at least 3 sales and a middle-50% range at 5+. 2 more sales came from model years with fewer than 3 sales each and are left out of this table.

Sold prices over time

$0k$24k$47k$71k$94kApr 2026Jun 2026Aug 2026Oct 2026median $28,3392026-04-18: $44,0002026-05-04: $20,2222026-05-25: $23,5002026-05-26: $30,0002026-06-05: $14,8002026-06-08: $24,0002026-06-15: $34,5002026-06-23: $12,0002026-06-23: $32,0002026-07-02: $8,5002026-07-19: $29,9282026-08-04: $26,0002026-08-08: $20,2502026-08-13: $85,0002026-08-14: $35,0002026-08-29: $31,5002026-09-11: $16,9282026-10-02: $30,8002026-10-06: $40,5002026-10-26: $26,750
Each dot is one sold auction (USD sales only). Hover a dot for date and price.

Market signal

There aren't enough recent Porsche 928 S4 sales for a separate Buy / Hold / Sell signal. A signal needs at least 15 USD online-auction sales in each of the last two 3-month periods; here, only 8 USD sales in the last 3 months (need 15); only 10 USD sales in the prior 3 months (need 15). See the market signal on the Porsche 928 page, which uses every 928 sale. It currently reads Hold (no clear move).

Recent Porsche 928 S4 sales

ListingSold priceDateSource
1987 Porsche 928 S4 5-Speed$26,750Oct 26, 2026Bring a Trailer
1987 Porsche 928 S4 Automatic£21,261 GBPOct 11, 2026Car & Classic
35k-Mile 1987 Porsche 928 S4$40,500Oct 6, 2026Bring a Trailer
1989 Porsche 928 S4$30,800Oct 2, 2026broadarrow
1988 Porsche 928 S4£16,500 GBPSep 28, 2026Collecting Cars
1988 Porsche 928 S4£10,000 GBPSep 17, 2026Car & Classic
1990 Porsche 928 S4$16,928Sep 11, 2026Bring a Trailer
1990 Porsche 928 S4 Gemballa · VAT-Q€70,500 EURSep 11, 2026Collecting Cars
1988 Porsche 928 S4£18,500 GBPAug 30, 2026Collecting Cars
1989 Porsche 928 S4 5-Speed$31,500Aug 29, 2026Bring a Trailer
48k-Mile 1989 Porsche 928 S4$35,000Aug 14, 2026Bring a Trailer
1987 Porsche 928 S4$85,000Aug 13, 2026Bring a Trailer
1987 Porsche 928 S4$20,250Aug 8, 2026Bring a Trailer
1992 Porsche 928 S4£24,000 GBPAug 6, 2026Car & Classic
35k-Mile 1988 Porsche 928 S4$26,000Aug 4, 2026Bring a Trailer
1989 Porsche 928 S4 5-Speed$29,928Jul 19, 2026Bring a Trailer
1988 Porsche 928 S4$8,500Jul 2, 2026Cars & Bids
1988 Porsche 928 S4$12,000Jun 23, 2026Cars & Bids
1991 Porsche 928 S4$32,000Jun 23, 2026Bring a Trailer
1988 Porsche 928 S4$34,500Jun 15, 2026Bring a Trailer
1989 Porsche 928 S4$24,000Jun 8, 2026Bring a Trailer
1987 Porsche 928 S4$14,800Jun 5, 2026Bring a Trailer
1989 Porsche 928 S4 5-Speed$30,000May 26, 2026Bring a Trailer
1989 Porsche 928 S4$23,500May 25, 2026Bring a Trailer
1987 Porsche 928 S4$20,222May 4, 2026Bring a Trailer
1989 PORSCHE 928 S4$44,000Apr 18, 2026barrettjackson
1988 Porsche 928 S4A$28,000 AUDMar 30, 2026Collecting Cars

Back to the full Porsche 928 price guide: every trim, the market signal, buyer tips and all recent sales.

Frequently asked questions

What is a Porsche 928 S4 worth in 2026?

In our last 12 months of 20 U.S.-dollar auction sales, the median sold price for a Porsche 928 S4 was $28,339, with the middle half between $20,200 and $32,600 and sales from $8,500 to $85,000. Condition, mileage, model year and options move any one car; this is a market snapshot, not an appraisal.

How does the Porsche 928 S4 compare with other 928 trims?

The Porsche 928 S4 median of $28,339 compares with $25,500 for all Porsche 928 sales in our sample window.

Which Porsche 928 S4 model year is the best value?

In our sample, 1988 cars had the lowest median ($19,000, 4 sales) and 1989 cars the highest ($30,400, 8 sales), counting model years with at least 3 sales. Lower prices often reflect higher mileage or condition, so compare individual sales.

Is a manual Porsche 928 S4 worth more?

In this sample, manual cars sold for a $30,000 median (5 sales) and automatic (Sportomatic/Tiptronic) cars for $23,750 (14 sales). Model year and mileage differ between the two groups, so this isn't a like-for-like price difference.

How do you decide which sales count as a Porsche 928 S4?

Trim is read from the auction listing title. Race and cup cars, projects, tributes, replicas, conversions and modified cars are left out of trim pages (they still count on the Porsche 928 page), and special editions are not lumped in with the regular 928 S4. Sold-price data from Old Cars Data auction records. Only sold results are included.