Porsche 911 Turbo (930)
The market for the Porsche 911 Turbo (930) shows an appreciation momentum of 59.9, with a forecast indicating an 'up' direction over the next 6 to 24 months (probabilities 0.52 to 0.59), though within a 'volatile' regime. The market also presents an overvaluation score of 65.54 against an undervaluation score of 37.43, while the strongest leading indicator, the S&P 500, shows a 0.75 correlation with a 5-month lead.
What It's Actually Worth
Blended value of a standard 38 yr, 53k mi example, ~$137K 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? 67% 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 45 scored forecasts: 67% 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 9 in 10
We replayed 493 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±21%; the gavel landed inside our predicted range 9 in 10 of the time, and we lean slightly low on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-07-15 | 1989 · 32k mi | $83.7K–$306K | $224K | ✓ |
| 2026-07-15 | 1986 · 29k mi | $85.1K–$311K | $155K | ✓ |
| 2026-07-10 | 1983 · 33k mi | $83.3K–$305K | $173K | ✓ |
| 2026-07-10 | 1987 · 57k mi | $69.9K–$255K | $151K | ✓ |
| 2026-07-08 | 1979 · 40k mi | $80.1K–$293K | $76.0K | ✗ |
| 2026-07-02 | 1979 · 59k mi | $69.0K–$252K | $307K | ✗ |
| 2026-07-02 | 1988 · 76k mi | $63.3K–$231K | $156K | ✓ |
| 2026-06-30 | 1986 · 60k mi | $69.9K–$256K | $159K | ✓ |
Live now — calling it before the gavel
We're currently tracking 8 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 | 1986 · 113k mi | BaT | $46.3K–$249K ($107K) |
| open | 1978 · 1k mi | classic | $107K–$577K ($249K) |
| open | 1987 · 11k mi | classic | $87.5K–$470K ($203K) |
| open | 1987 · 60k mi | BaT | $56.2K–$302K ($130K) |
| open | 1977 · 61k mi | classic | $55.1K–$296K ($128K) |
| open | 1988 · 52k mi | BaT | $59.4K–$319K ($138K) |
| open | 1978 · 57k mi | classic | $57.0K–$306K ($132K) |
| open | 1978 · 59k mi | classic | $56.3K–$303K ($131K) |
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 | UP | 52% | Low | 61% |
| 12 mo | UP | 55% | Low | 67% |
| 24 mo | UP | 59% | Low | 79% |
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.
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 (moderate conviction — 51% of weighted drivers agree), driven mainly by Nasdaq Composite and Consumer Discretionary ETF (XLY), though Bitcoin (USD) points the other way.
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 2016
$100K invested 2016-11 → today (9.7 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.
S&P 500 leads by about 5 months (moves with this market, correlation 0.75). Shown shifted forward 5 months so its turns line up with the market's.
Why We Think This
Current Inventory Snapshot
Comparable Markets
| Market | Undervaluation | Appreciation | Liquidity |
|---|---|---|---|
| Alfa Romeo 105 Sedan | 87 | 72 | 39 |
| Mercedes-Benz 190SL | 37 | 38 | 42 |
| BMW 2002 tii | 50 | 71 | 28 |
| Datsun 240Z | 46 | 48 | 37 |
| Datsun 280Z | 33 | 67 | 53 |
| Ferrari 308 | 38 | 51 | 53 |
| Ferrari 308 GT4 | 50 | 44 | 23 |
| Ferrari 328 | 57 | 43 | 44 |
Recent Signals & Alerts
- vin returned higher VIN relisted +$95,900 vs prior
- price jump Median asking moved sharply (z=-312.1)
- vin returned higher VIN relisted +$49,500 vs prior
- vin returned higher VIN relisted +$89,490 vs prior
- price jump Median asking moved sharply (z=981.0)
- vin returned higher VIN relisted +$95,900 vs prior
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.