As of October 2026, CarSearch.Pro's True Value model estimates a typical Porsche 928 is actually worth $21,500 (fair range $18,900 to $24,100). Unlike the median asking price shown above, True Value is anchored to 280 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 $25,000 — about 16% above what these cars have actually been selling for. That gap favors patient buyers: negotiate from the sold data, not the ask.
As of October 2026, the Porsche 928 market has 297 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $24,999, with the middle 50% of listings priced between $15,994 and $39,950. Porsche 928 prices have decreased 37.3% over the past quarter, from a median sale price of $29,900 to $18,750.
The typical Porsche 928 on the market has 83,748 miles. Listings spend an average of 150 days on market before selling or being removed.
Current Porsche 928 Pricing
A fair price for a Porsche 928 in October 2026 is between $15,994 and $39,950 (25th to 75th percentile). Prices range from $5,500 to $69,900 across 297 active listings.
Price Distribution (297 Active Listings)
Percentile
Price
Meaning
10th
$5,500
Budget / project cars
25th
$15,994
Below average price
Median (50th)
$24,999
Typical market price
75th
$39,950
Above average / premium
90th
$69,900
Top tier / low miles / rare spec
The average asking price is $34,697, 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
10,000 - 25,000 mi
12
$49,565
25,000 - 50,000 mi
37
$42,500
50,000 - 100,000 mi
124
$26,000
100,000 - 150,000 mi
79
$23,500
Over 150,000 mi
15
$19,995
Porsche 928 Price Trends
Porsche 928 prices have decreased 37.3% over the past quarter. In 2026-Q4, the median sale price was $18,750 across 2 sales, down from $29,900 in 2026-Q3.
On a year-over-year basis, Porsche 928 prices are down 38.0% ($18,750 vs. $30,250 a year ago).
Porsche 928 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
104
$29,900
$43,325
2026-Q4
2
$18,750
$17,875
Best Value Porsche 928 by Model Year
The 1980 Porsche 928 offers the best value with a median price of $10,000 across 15 listings. The most expensive model year is 1992 at a median of $155,000.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
1978
8
$16,000
$2,900
$49,995
1979
22
$16,371
$2,500
$110,000
1980
15
$10,000
$4,800
$34,800
1981
19
$14,950
$2,500
$28,500
1982
22
$22,995
$2,500
$49,565
1983
32
$16,500
$2,500
$45,075
1984
12
$15,000
$2,500
$61,040
1985
24
$22,000
$4,000
$69,900
1986
33
$30,000
$5,000
$60,385
1987
22
$29,928
$5,500
$49,000
1988
25
$30,990
$19,950
$61,242
1989
21
$35,000
$12,000
$69,900
1990
7
$35,284
$6,000
$59,993
1991
7
$35,599
$34,928
$175,000
1992
2
$155,000
$57,060
$155,000
1993
5
$130,000
$77,928
$210,110
1994
13
$78,777
$68,449
$149,900
1995
7
$125,000
$79,928
$125,500
How Mileage Affects Porsche 928 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 from confirmed sales, referenced to a typical example at about 77,000 miles:
Odometer (approx.)
Value Multiplier
Implied Value
424 mi
1.16x
$24,924
4,940 mi
1.27x
$27,244
11,262 mi
1.55x
$33,249
21,253 mi
1.75x
$37,538
39,515 mi
1.22x
$26,316
65,368 mi
1.08x
$23,138
98,585 mi
0.89x
$19,129
141,321 mi
0.68x
$14,614
1,401,172 mi
0.73x
$15,785
Low-mileage examples carry a real premium in this market: around 424 miles, cars trade at roughly 1.16x the reference value. At the other end, 1,401,172-mile examples trade at about 0.73x. Implied values here are anchored to this market's True Value.
Porsche 928 Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
↑ UP
52%
volatile
56% over 133 tests
12 months
↑ UP
54%
volatile
57% over 127 tests
24 months
↑ UP
55%
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 — 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 Porsche 928
The highest concentration of Porsche 928 listings is in CA with 39 active listings, followed by FL (25), IL (22), NC (15), MI (14).
Regional pricing varies significantly. The lowest median price is in OH at $16,500, while VA has the highest at $74,997. Buyers willing to travel or arrange transport may find savings of $58,497.
Top States by Inventory
State
Listings
Median Price
CA
39
$19,928
FL
25
$22,798
IL
22
$21,990
NC
15
$35,995
MI
14
$22,995
MA
14
$32,500
AZ
13
$59,993
NY
10
$24,999
PA
9
$26,376
TX
8
$35,000
Porsche 928 Market Velocity
Porsche 928 listings spend an average of 150 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 80 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.
Porsche 928 Buyer's Guide Summary
Fair price range: $15,994 to $39,950. The median is $24,999. Anything below $15,994 is a strong value; above $39,950 should be premium condition, low miles, or a desirable specification.
Trending down: Porsche 928 prices have dropped 37.3% recently. Patient buyers may benefit from waiting, but desirable examples still sell quickly.
Best value year: The 1980 model year has the lowest median price at $10,000, making it the most accessible entry point into Porsche 928 ownership.
Negotiate: With an average of 150 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.