Pontiac Bonneville
Due to a thin data state, this market outlook for Pontiac Bonneville is low-confidence. A potential downward trend is signaled with a 0.52 probability over 6, 12, and 24 months in a volatile regime, while the market shows an undervaluation score of 66.59 and depreciation risk of 55.65. The High-Yield Bond Spread is identified as a leading indicator with a correlation of 0.65.
What It's Actually Worth
Blended value of a standard 63 yr, 44k mi example, ~$19.3K 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? 68% 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 120 scored forecasts: 68% got the direction right, median value error ±32%.
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 6 in 10
We replayed 163 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±47%; the gavel landed inside our predicted range 6 in 10 of the time, and we lean slightly high on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-09-18 | 1977 · 86k mi | $10.3K–$37.9K | $4.1K | ✗ |
| 2026-09-03 | 1967 · 91k mi | $9.9K–$36.2K | $13.0K | ✓ |
| 2026-08-06 | 1966 · 68k mi | $10.6K–$57.3K | $50.4K | ✓ |
| 2026-08-06 | 1966 · 68k mi | $12.4K–$45.6K | $50.4K | ✗ |
| 2026-07-31 | 1964 · 59k mi | $14.1K–$51.9K | $15.0K | ✓ |
| 2026-07-30 | 1960 · 59k mi | $14.1K–$51.7K | $16.5K | ✓ |
| 2026-07-22 | 2002 · 179k mi | $5.7K–$21.0K | $8.0K | ✓ |
| 2026-07-21 | 2005 · 76k mi | $13.0K–$47.7K | $5.9K | ✗ |
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 | 1964 · 62k mi | ebay | $9.3K–$50.3K ($21.6K) |
| open | 1963 · 100k mi | ebay | $6.5K–$35.2K ($15.1K) |
| open | 1963 · 100k mi | ebay | $6.5K–$35.6K ($15.3K) |
| open | 1963 · 100k mi | ebay | $6.7K–$36.1K ($15.5K) |
| open | 1966 · 1000k mi | ebay | $6.4K–$34.7K ($14.9K) |
| open | 1963 · 100k mi | ebay | $6.7K–$36.1K ($15.5K) |
| open | 1958 | ebay | $8.2K–$44.6K ($19.2K) |
| open | 1960 · 76k mi | hemmings | $8.8K–$47.9K ($20.6K) |
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 | 48% | Low | 67% |
| 12 mo | DOWN | 52% | Low | 68% |
| 24 mo | DOWN | 52% | Low | 57% |
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.
If You’d Bought in 2006
$100K invested 2006-01 → today (20.7 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.
High-Yield Bond Spread leads by about 20 months (moves with this market, correlation 0.65). Shown shifted forward 20 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 | 84 | 22 | 32 |
| Mercedes-Benz 190SL | 51 | 40 | 56 |
| BMW 2002 tii | 60 | 33 | 13 |
| Datsun 240Z | 49 | 56 | 44 |
| Datsun 280Z | 48 | 45 | 59 |
| Ferrari 308 | 38 | 55 | 45 |
| Ferrari 308 GT4 | 54 | 47 | 15 |
| Ferrari 328 | 44 | 53 | 51 |
Recent Signals & Alerts
- price jump Median asking moved sharply (z=4.4)
- price jump Median asking moved sharply (z=4.8)
- price jump Median asking moved sharply (z=-8.2)
- inventory shortage Inventory dropped (robust z=-3.1)
- inventory shortage Inventory dropped (robust z=-3.7)
- price jump Median asking moved sharply (z=18.8)
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.