What is a Porsche 928 GTS actually worth?

CarSearch.Pro's True Value model puts a typical Porsche 928 GTS at $21,400 as of November 2026, with a fair range of $18,800 to $23,900. Unlike a simple average of asking prices, True Value is anchored to 278 recent confirmed sales (median $27,000), normalized for mileage, and blends auction results with live market asks — sellers are currently asking a median of $25,500.

What does a Porsche 928 GTS cost?

As of November 2026, the median asking price for a Porsche 928 GTS is $25,500. The middle 50% of listings are priced between $15,994 and $42,500. Prices range from $7,900 (10th percentile) to $78,777 (90th percentile) across 293 active listings tracked by CarSearch.Pro.

Are Porsche 928 GTS prices going up or down?

In 2026-Q4, the median sale price was $29,403, down 1.7% from $29,900 in 2026-Q3. This is based on 20 sales recorded by CarSearch.Pro.

What is the best year Porsche 928 GTS to buy?

The 1980 Porsche 928 GTS offers the best value with a median price of $10,890 across 17 listings. This year has sufficient market inventory for competitive pricing.

Where are Porsche 928 GTS cheapest?

Based on current listings, GA has the lowest median price at $9,500 across 5 listings. The top states by inventory are CA (40), FL (25), PA (16), IL (15), AZ (15).

How long does it take to sell a Porsche 928 GTS?

Porsche 928 GTS listings spend an average of 158 days on market before selling or being removed. Sellers should expect longer listing periods in this market.

Will Porsche 928 GTS values go up or down over the next year?

CarSearch.Pro's 12-month model currently points UP for the Porsche 928 GTS (54% probability, volatile regime). For context, this model's past 12-month calls on this market have been directionally correct 58% of the time across 127 walk-forward tests. Forecasts are probabilistic, not guarantees.

How does mileage affect Porsche 928 GTS value?

Based on CarSearch.Pro's empirical mileage curve learned from actual Porsche 928 GTS sales, the relationship is non-linear: an example with around 424 miles trades at roughly 1.19x the reference value, while one with around 1,401,172 miles trades at roughly 0.72x. The reference point for this market is about 77,000 miles.

Porsche 928 GTS Price Guide & Market Report

Name: Porsche 928 GTS Market Data
Creator: CarSearch.Pro

Updated November 2026 | 293 active listings | 1,000 historical sales

Browse Listings

Median Price $25,500

Average Price $36,925

Fair Range (25th-75th) $15,994 - $42,500

Trend → Stable

What a GTS Is Actually Worth

True Value $21,400

Fair Range $18,800 - $23,900

Median Recent Sold $27,000

Verdict WATCH

As of November 2026, CarSearch.Pro's True Value model estimates a typical Porsche 928 GTS is actually worth $21,400 (fair range $18,800 to $23,900). Unlike the median asking price shown above, True Value is anchored to 278 recent confirmed sales, normalized for mileage, and blends auction hammer prices (grossed up for buyer's premium) with real-world asking behavior.

Sellers are currently asking a median of $25,500 — about 19% above what these cars have actually been selling for. That gap favors patient buyers: negotiate from the sold data, not the ask.

Well-supported value — but volatile.

See the full Porsche 928 GTS investment analysis →

Porsche 928 GTS Market Summary

As of November 2026, the Porsche 928 GTS market has 293 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $25,500, with the middle 50% of listings priced between $15,994 and $42,500. GTS prices have decreased 1.7% over the past quarter, from a median sale price of $29,900 to $29,403.

The typical GTS on the market has 88,000 miles. Listings spend an average of 158 days on market before selling or being removed.

Current GTS Pricing

A fair price for a Porsche 928 GTS in November 2026 is between $15,994 and $42,500 (25th to 75th percentile). Prices range from $7,900 to $78,777 across 293 active listings.

Price Distribution (293 Active Listings)
Percentile	Price	Meaning
10th	$7,900	Budget / project cars
25th	$15,994	Below average price
Median (50th)	$25,500	Typical market price
75th	$42,500	Above average / premium
90th	$78,777	Top tier / low miles / rare spec

The average asking price is $36,925, which is higher than the median, indicating that high-priced outliers (rare specifications, very low mileage, or concours-quality examples) pull the average up.

Price by Mileage

Mileage Range	Listings	Median Price
Under 10,000 mi	3	$9,800
10,000 - 25,000 mi	15	$49,900
25,000 - 50,000 mi	35	$49,500
50,000 - 100,000 mi	111	$25,000
100,000 - 150,000 mi	83	$23,500
Over 150,000 mi	17	$18,500

GTS Price Trends

Porsche 928 GTS prices have decreased 1.7% over the past quarter. In 2026-Q4, the median sale price was $29,403 across 20 sales, down from $29,900 in 2026-Q3.

On a year-over-year basis, GTS prices are down 2.8% ($29,403 vs. $30,250 a year ago).

GTS Quarterly Sale Prices (Historical)
Quarter	Sales	Median Price	Average Price
2025-Q1	65	$25,000	$36,455
2025-Q2	95	$30,500	$44,595
2025-Q3	109	$26,000	$34,705
2025-Q4	72	$30,250	$46,949
2026-Q1	91	$29,428	$33,789
2026-Q2	80	$24,111	$39,252
2026-Q3	106	$29,900	$42,991
2026-Q4	20	$29,403	$28,818

Best Value GTS by Model Year

The 1980 GTS offers the best value with a median price of $10,890 across 17 listings. The most expensive model year is 1993 at a median of $210,110.

Median Price by Model Year
Year	Listings	Median Price	Min	Max
1978	8	$25,249	$6,000	$49,995
1979	18	$19,994	$5,000	$110,000
1980	17	$10,890	$5,500	$34,800
1981	15	$13,000	$5,000	$28,500
1982	24	$27,000	$5,000	$90,385
1983	26	$16,500	$5,000	$45,075
1984	19	$23,900	$6,500	$49,985
1985	21	$20,800	$6,100	$69,900
1986	26	$28,181	$5,000	$47,500
1987	25	$28,995	$8,500	$49,000
1988	28	$29,995	$19,950	$61,242
1989	25	$39,000	$2,000	$89,999
1990	8	$31,755	$6,000	$59,993
1991	6	$175,000	$22,500	$175,000
1992	2	$155,000	$57,060	$155,000
1993	3	$210,110	$130,000	$210,110
1994	16	$99,789	$66,599	$149,900
1995	6	$125,000	$84,928	$125,500

How Mileage Affects GTS Value

Most price guides assume value falls linearly with mileage. It doesn't. CarSearch.Pro learns the actual price-vs-mileage curve for the Porsche 928 GTS from confirmed sales, referenced to a typical example at about 77,000 miles:

Odometer (approx.)	Value Multiplier	Implied Value
424 mi	1.19x	$25,428
4,940 mi	1.28x	$27,431
11,262 mi	1.54x	$32,953
21,335 mi	1.69x	$36,253
39,583 mi	1.22x	$26,036
65,322 mi	1.07x	$22,975
98,327 mi	0.89x	$19,143
140,943 mi	0.69x	$14,767
1,401,172 mi	0.72x	$15,450

Low-mileage examples carry a real premium in this market: around 424 miles, cars trade at roughly 1.19x the reference value. At the other end, 1,401,172-mile examples trade at about 0.72x. Implied values here are anchored to this market's True Value.

GTS Price Forecast

Horizon	Direction	Probability	Regime	Past Accuracy
6 months	↑ UP	52%	volatile	55% over 133 tests
12 months	↑ UP	54%	volatile	58% over 127 tests
24 months	↑ UP	56%	volatile	71% over 115 tests

These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the Porsche 928 GTS — every month we re-run the forecast as if we only knew what was knowable then, and grade it against what actually happened. We publish the hit rate either way. Full methodology & track record →

Where to Buy a GTS

The highest concentration of Porsche 928 GTS listings is in CA with 40 active listings, followed by FL (25), PA (16), IL (15), AZ (15).

Regional pricing varies significantly. The lowest median price is in GA at $9,500, while VA has the highest at $66,998. Buyers willing to travel or arrange transport may find savings of $57,498.

Top States by Inventory
State	Listings	Median Price
CA	40	$24,872
FL	25	$24,000
PA	16	$26,376
IL	15	$24,500
AZ	15	$54,995
NY	12	$22,500
NC	12	$28,995
MI	11	$22,995
MA	11	$32,500
TX	10	$19,995

GTS Market Velocity

Porsche 928 GTS listings spend an average of 158 days on market. This is a slow-moving market. Listings tend to sit for extended periods, giving buyers significant negotiating power. Sellers should be realistic on pricing and patient.

The median time on market is 90 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.

GTS Buyer's Guide Summary

Fair price range: $15,994 to $42,500. The median is $25,500. Anything below $15,994 is a strong value; above $42,500 should be premium condition, low miles, or a desirable specification.
Prices stable: GTS values have been relatively flat. There is no urgency to time the market.
Best value year: The 1980 model year has the lowest median price at $10,890, making it the most accessible entry point into GTS ownership.
Negotiate: With an average of 158 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.

Ready to start shopping? Browse all 293 GTS listings with AI quality scores, or get a free AI appraisal on a specific listing.

Data sourced from 10 marketplaces including eBay Motors, Bring a Trailer, Cars & Bids, AutoTrader, CarGurus, Cars.com, Facebook Marketplace, Classic.com, and Hagerty Marketplace. Updated daily by CarSearch.Pro's automated pipeline. Browse all 293 active GTS listings. Read the latest GTS market analysis.