What a Porsche 718 Boxster/Cayman GT4 Is Actually Worth
True Value$156,300
Fair Range$137,500 - $175,000
Median Recent Sold$168,500
VerdictWATCH
As of August 2026, CarSearch.Pro's True Value model estimates a typical Porsche 718 Boxster/Cayman GT4 is actually worth $156,300 (fair range $137,500 to $175,000). Unlike the median asking price shown above, True Value is anchored to 106 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 $173,000 — about 11% 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 · momentum improving — but volatile.
As of August 2026, the Porsche 718 Boxster/Cayman GT4 market has 238 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $169,981, with the middle 50% of listings priced between $124,900 and $206,993. Porsche 718 Boxster/Cayman GT4 prices have decreased 5.0% over the past quarter, from a median sale price of $199,999 to $189,900.
The typical Porsche 718 Boxster/Cayman GT4 on the market has 8,163 miles. Listings spend an average of 65 days on market before selling or being removed.
Current Porsche 718 Boxster/Cayman GT4 Pricing
A fair price for a Porsche 718 Boxster/Cayman GT4 in August 2026 is between $124,900 and $206,993 (25th to 75th percentile). Prices range from $112,337 to $220,297 across 238 active listings.
Price Distribution (238 Active Listings)
Percentile
Price
Meaning
10th
$112,337
Budget / project cars
25th
$124,900
Below average price
Median (50th)
$169,981
Typical market price
75th
$206,993
Above average / premium
90th
$220,297
Top tier / low miles / rare spec
The average asking price is $166,791, which is lower than the median, suggesting pricing is relatively symmetrical across the market.
Price by Mileage
Mileage Range
Listings
Median Price
Under 10,000 mi
127
$203,075
10,000 - 25,000 mi
83
$125,000
25,000 - 50,000 mi
14
$119,990
50,000 - 100,000 mi
7
$86,195
Porsche 718 Boxster/Cayman GT4 Price Trends
Porsche 718 Boxster/Cayman GT4 prices have decreased 5.0% over the past quarter. In 2026-Q3, the median sale price was $189,900 across 70 sales, down from $199,999 in 2026-Q2.
On a year-over-year basis, Porsche 718 Boxster/Cayman GT4 prices are up 0.1% ($189,900 vs. $189,800 a year ago).
Porsche 718 Boxster/Cayman GT4 Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q4
43
$191,000
$170,719
2025-Q1
29
$180,000
$167,525
2025-Q2
67
$185,424
$174,261
2025-Q3
69
$189,800
$177,067
2025-Q4
80
$187,000
$173,856
2026-Q1
113
$172,000
$167,104
2026-Q2
203
$199,999
$191,033
2026-Q3
70
$189,900
$180,704
Best Value Porsche 718 Boxster/Cayman GT4 by Model Year
The 2016 Porsche 718 Boxster/Cayman GT4 offers the best value with a median price of $117,950 across 69 listings. The most expensive model year is 2025 at a median of $219,800.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2016
69
$117,950
$77,999
$209,995
2020
19
$134,985
$123,000
$154,990
2021
10
$131,900
$94,000
$169,981
2022
10
$148,998
$114,995
$189,000
2023
68
$197,995
$122,000
$249,990
2024
31
$209,900
$173,000
$279,000
2025
28
$219,800
$115,858
$269,900
How Mileage Affects Porsche 718 Boxster/Cayman GT4 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 718 Boxster/Cayman GT4 from confirmed sales, referenced to a typical example at about 3,707 miles:
Odometer (approx.)
Value Multiplier
Implied Value
557 mi
1.30x
$202,413
4,601 mi
1.00x
$156,350
10,430 mi
0.85x
$132,174
18,230 mi
0.84x
$131,162
38,148 mi
0.90x
$141,181
57,000 mi
0.82x
$127,483
97,980 mi
0.74x
$115,873
154,919 mi
0.65x
$101,870
300,000 mi
0.58x
$90,779
Low-mileage examples carry a real premium in this market: around 557 miles, cars trade at roughly 1.30x the reference value. At the other end, 300,000-mile examples trade at about 0.58x. Implied values here are anchored to this market's True Value.
Porsche 718 Boxster/Cayman GT4 Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
↑ UP
53%
volatile
55% over 42 tests
12 months
↑ UP
56%
volatile
61% over 36 tests
24 months
↑ UP
61%
volatile
67% over 24 tests
These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the Porsche 718 Boxster/Cayman GT4 — 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 718 Boxster/Cayman GT4
The highest concentration of Porsche 718 Boxster/Cayman GT4 listings is in TX with 12 active listings, followed by FL (12), CA (12), GA (9), MI (6).
Regional pricing varies significantly. The lowest median price is in CO at $99,000, while AZ has the highest at $192,991. Buyers willing to travel or arrange transport may find savings of $93,991.
Top States by Inventory
State
Listings
Median Price
TX
12
$124,995
FL
12
$138,401
CA
12
$124,981
GA
9
$132,000
MI
6
$122,999
WA
5
$112,825
AZ
5
$192,991
VA
4
$149,997
OR
4
$124,900
NY
4
$127,995
Porsche 718 Boxster/Cayman GT4 Market Velocity
Porsche 718 Boxster/Cayman GT4 listings spend an average of 65 days on market. This is a slower market. Buyers have negotiating leverage, especially on listings that have been active for 60+ days. Sellers should consider competitive pricing from the start.
The median time on market is 46 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.
Fair price range: $124,900 to $206,993. The median is $169,981. Anything below $124,900 is a strong value; above $206,993 should be premium condition, low miles, or a desirable specification.
Trending down: Porsche 718 Boxster/Cayman GT4 prices have dropped 5.0% recently. Patient buyers may benefit from waiting, but desirable examples still sell quickly.
Best value year: The 2016 model year has the lowest median price at $117,950, making it the most accessible entry point into Porsche 718 Boxster/Cayman GT4 ownership.
Negotiate: With an average of 65 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.