Porsche Boxster (981)
The Porsche Boxster (981) market shows appreciation momentum at 58.55 and a depreciation risk of 37.72, with a signal of 52.31 for overvaluation. An upward trend is indicated for both the 6-month (0.55 probability) and 24-month (0.62 probability) horizons, consistently in a volatile regime. This outlook, with a 0.935 confidence, is strongly influenced by leading factors like Advance Retail Sales, which correlates at 0.92 with a 9-month lead.
What It's Actually Worth
Blended value of a standard 10 yr, 32k mi example, ~$45.5K now. The green line weighs confirmed auction sales most heavily (the amber dots — what cars actually hammered for), blends in fast-selling "just-missed" listings, and lightly smooths out month-to-month composition noise.
Did our model work? 79% direction calls right
Each faint amber line is a forecast we would have made at that point in the past (12-mo horizon), drawn against what actually happened (blue). Over 42 scored forecasts: 79% got the direction right, median value error ±12%.
Walk-forward: each ghost uses only data available at that date — no hindsight. Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
Auction Scorecard gavel in range 8 in 10
We replayed 273 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±22%; the gavel landed inside our predicted range 8 in 10 of the time, and we lean slightly high on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-09-20 | 2014 · 48k mi | $27.0K–$60.3K | $42.2K | ✓ |
| 2026-09-17 | 2014 · 24k mi | $32.5K–$72.6K | $38.3K | ✓ |
| 2026-09-09 | 2014 · 78k mi | $21.7K–$48.5K | $39.0K | ✓ |
| 2026-08-19 | 2014 · 32k mi | $30.5K–$68.2K | $63.5K | ✓ |
| 2026-08-19 | 2013 · 65k mi | $24.1K–$53.8K | $45.8K | ✓ |
| 2026-08-07 | 2013 · 87k mi | $20.4K–$45.7K | $36.0K | ✓ |
| 2026-08-04 | 2016 · 8k mi | $44.6K–$99.6K | $85.0K | ✓ |
| 2026-07-29 | 2016 · 25k mi | $32.7K–$73.2K | $107K | ✗ |
Live now — calling it before the gavel
We're currently tracking 7 open auctions in this market. Here's our predicted hammer range for each — check back after they close.
| Closes | Car | Source | Our predicted range |
|---|---|---|---|
| open | 2016 · 33k mi | ebay | $26.6K–$76.4K ($45.1K) |
| open | 2014 · 62k mi | ebay | $21.8K–$62.3K ($36.8K) |
| open | 2014 · 80k mi | ebay | $19.0K–$53.2K ($31.8K) |
| open | 2014 · 80k mi | ebay | $19.3K–$54.1K ($32.3K) |
| open | 2014 · 80k mi | ebay | $19.1K–$52.7K ($31.7K) |
| open | 2015 · 31k mi | classic | $25.5K–$81.8K ($45.7K) |
| open | 2016 · 50k mi | classic | $22.0K–$70.7K ($39.5K) |
No-lookahead: predictions are made before each auction closes; the scorecard grades confirmed sold auctions only (no-sales excluded). A modeled estimate, not a guarantee. Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
Where We Think It's Headed
Probability and range, not a single number. Wider = less certain (not bigger gains).
| Horizon | Direction | Probability | Confidence | Past accuracy |
|---|---|---|---|---|
| 6 mo | DOWN | 40% | Low | 63% |
| 12 mo | UP | 65% | Low | 79% |
| 24 mo | UP | 72% | Low | 100% |
Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.
If You’d Bought in 2021
$100K invested 2021-03 → today (5.5 yrs), this car vs where else you could've put the money. Rebased to 100 at the start; the dashed line is inflation (break-even).
What This Market Follows
Specialty-car prices don't move in a vacuum. These economic indicators have historically led this market — tap one to see it shifted forward by its lead time, overlaid on the value line.
Advance Retail Sales leads by about 9 months (moves with this market, correlation 0.92). Shown shifted forward 9 months so its turns line up with the market's.
Why We Think This
Current Inventory Snapshot
Comparable Markets
| Market | Undervaluation | Appreciation | Liquidity |
|---|---|---|---|
| BMW 1M Coupe (E82) | 44 | 44 | 56 |
| Nissan 350Z | 55 | 53 | 53 |
| Nissan 350Z NISMO | 50 | 9 | 55 |
| Nissan 370Z | 50 | 45 | 46 |
| Alfa Romeo 4C | 50 | 49 | 35 |
| Fiat 500 (2012-2019) | 66 | 29 | 49 |
| Porsche 718 Boxster/Cayman | 47 | 47 | 41 |
| Porsche 718 Boxster/Cayman GT4 | 18 | 42 | 42 |
Recent Signals & Alerts
- vin returned higher VIN relisted +$10,499 vs prior
- vin returned lower VIN relisted $-15,000 vs prior
- undisclosed title change VIN previously reported non-clean now listed clean/undisclosed
- vin returned higher VIN relisted +$10,499 vs prior
- vin returned lower VIN relisted $-15,000 vs prior
- inventory shortage Inventory dropped (robust z=-3.3)
Data-backed market intelligence, not a guaranteed prediction. Figures are modeled estimates from asking prices, sold comps, and public economic indicators; they can be wrong. Not financial advice.