Porsche 911 Turbo (997)
For the Porsche 911 Turbo (997) market, appreciation momentum currently sits at 64.94, alongside an overvaluation score of 63.02 and a depreciation risk of 38.29. Forecasts for the 6, 12, and 24-month horizons consistently indicate a downward direction with probabilities ranging from 0.44 to 0.49, suggesting a volatile market regime. A significant leading indicator is the High-Yield Bond Spread, which shows a correlation of 0.79 with an 11-month lead.
What It's Actually Worth
Blended value of a standard 18 yr, 37k mi example, ~$112K 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? 48% 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 56 scored forecasts: 48% got the direction right, median value error ±17%.
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 9 in 10
We replayed 480 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±20%; the gavel landed inside our predicted range 9 in 10 of the time, and we lean slightly high on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-09-30 | 2008 · 9k mi | $94.2K–$210K | $282K | ✗ |
| 2026-09-29 | 2007 · 53k mi | $60.0K–$134K | $85.0K | ✓ |
| 2026-09-24 | 2008 · 38k mi | $69.3K–$155K | $148K | ✓ |
| 2026-09-18 | 2007 · 44k mi | $65.3K–$146K | $130K | ✓ |
| 2026-09-15 | 2007 · 9k mi | $94.2K–$210K | $187K | ✓ |
| 2026-09-13 | 2008 · 91k mi | $49.8K–$111K | $79.5K | ✓ |
| 2026-09-11 | 2007 · 17k mi | $79.2K–$177K | $202K | ✗ |
| 2026-09-09 | 2008 · 99k mi | $48.9K–$109K | $95.0K | ✓ |
Live now — calling it before the gavel
We're currently tracking 6 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 | 2007 · 21k mi | classic | $64.3K–$182K ($108K) |
| open | 2008 · 93k mi | classic | $42.0K–$119K ($70.7K) |
| open | 2007 · 14k mi | classic | $69.6K–$224K ($125K) |
| open | 2007 · 43k mi | classic | $60.0K–$192K ($107K) |
| open | 2007 · 59k mi | classic | $55.2K–$177K ($99.0K) |
| open | 2007 · 66k mi | classic | $53.6K–$172K ($96.0K) |
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 | 49% | Low | 52% |
| 12 mo | DOWN | 47% | Low | 48% |
| 24 mo | DOWN | 44% | Low | 50% |
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.
Lead Indicator Forecast
Some indicators move before this market does. High-Yield Bond Spread has historically led it by about 11 months — so its recent move implies where prices head next (dashed). The solid green line is actual value through today; the shaded path is what the lead implies.
Crystal Ball — What Leading Indicators Signal
Distinct from the trend forecast above: this blends all 8 leading indicators (each at its own lead time, de-duplicated so correlated ones don't double-count) into one signal. Leading indicators are collectively signaling higher over the next ~12 months (high conviction — 100% of weighted drivers agree), driven mainly by Gold (futures) and 10-Year Treasury Yield.
Are the indicators agreeing?
Each bar is one driver's current push; longer = more weight. All one side = high conviction; split = low.
If You’d Bought in 2015
$100K invested 2015-04 → today (11.5 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.
High-Yield Bond Spread leads by about 11 months (moves with this market, correlation 0.79). Shown shifted forward 11 months so its turns line up with the market's.
Why We Think This
Current Inventory Snapshot
Comparable Markets
| Market | Undervaluation | Appreciation | Liquidity |
|---|---|---|---|
| Porsche 911 (997) Carrera S | 45 | 55 | 41 |
| Porsche 911 (997) Targa | 28 | 75 | 38 |
| Porsche 911 GT3 (997) | 22 | 78 | 59 |
Recent Signals & Alerts
- vin returned lower VIN relisted $-99,995 vs prior
- vin returned higher VIN relisted +$15,000 vs prior
- undisclosed title change VIN previously reported non-clean now listed clean/undisclosed
- vin returned higher VIN relisted +$15,000 vs prior
- vin returned lower VIN relisted $-99,995 vs prior
- undisclosed title change VIN previously reported non-clean now listed clean/undisclosed
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.