Buick Riviera
The Buick Riviera market currently presents an undervaluation score of 60.06, yet appreciation momentum is 43.05 and depreciation risk stands at 56.23. Forecasts over 6, 12, and 24 months indicate an "up" direction with probabilities of 0.49 to 0.5, all within a volatile regime. The High-Yield Bond Spread, showing a -0.59 correlation with a 21-month lead, is the strongest leading indicator for this market.
What It's Actually Worth
Blended value of a standard 54 yr, 49k mi example, ~$18.7K 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? 59% 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 158 scored forecasts: 59% got the direction right, median value error ±24%.
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 5 in 10
We replayed 345 past auctions in this market — predicting each hammer price from market data before the sale (no hindsight). Typical miss: ±53%; the gavel landed inside our predicted range 5 in 10 of the time, and we lean slightly high on average.
| Sold | Car | Our range | Hammer | |
|---|---|---|---|---|
| 2026-10-02 | 1965 · 80k mi | $8.4K–$30.3K | $99.8K | ✗ |
| 2026-09-30 | 1973 · 61k mi | $12.2K–$32.4K | $18.5K | ✓ |
| 2026-09-26 | 1965 · 55k mi | $12.3K–$32.6K | $193K | ✗ |
| 2026-09-26 | 1967 · 0k mi | $24.6K–$65.3K | $63.3K | ✓ |
| 2026-09-23 | 1963 · 88k mi | $9.1K–$24.2K | $32.5K | ✗ |
| 2026-09-11 | 1972 · 43k mi | $12.4K–$33.0K | $50.0K | ✗ |
| 2026-09-04 | 1969 · 85k mi | $9.4K–$25.0K | $6.5K | ✗ |
| 2026-09-03 | 1966 · 78k mi | $10.2K–$27.0K | $35.8K | ✗ |
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 | 1998 · 94k mi | ebay | $6.5K–$23.8K ($12.4K) |
| open | 1976 · 94k mi | ebay | $6.5K–$23.6K ($12.4K) |
| open | 1984 · 115k mi | ebay | $4.2K–$15.3K ($8.0K) |
| open | 1976 · 94k mi | ebay | $6.9K–$25.2K ($13.2K) |
| open | 1973 · 83k mi | ebay | $8.2K–$29.9K ($15.6K) |
| open | 1976 · 94k mi | ebay | $6.9K–$25.0K ($13.1K) |
| open | 1971 · 6k mi | ebay | $13.2K–$48.1K ($25.2K) |
| open | 1984 · 74k mi | ebay | $8.9K–$32.4K ($16.9K) |
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 | 49% | Low | 69% |
| 12 mo | UP | 50% | Low | 59% |
| 24 mo | UP | 50% | Low | 59% |
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 2007
$100K invested 2007-07 → today (19.2 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 12 months (moves with this market, correlation 0.46). Shown shifted forward 12 months so its turns line up with the market's.
Why We Think This
Current Inventory Snapshot
Comparable Markets
| Market | Undervaluation | Appreciation | Liquidity |
|---|---|---|---|
| Aston Martin DB4 | 60 | 43 | 63 |
| Aston Martin DB5 | 33 | 43 | — |
| Bentley Continental (S1, S2, S3) | 34 | 76 | 58 |
| Mercedes-Benz CL-Class | 49 | 49 | 37 |
| Mercedes-Benz CLK-Class | 55 | 40 | 46 |
| Bentley Continental GT (2004-2011) | 53 | 50 | 46 |
Recent Signals & Alerts
- vin returned lower VIN relisted $-10,000 vs prior
- vin returned higher VIN relisted +$8,995 vs prior
- undisclosed title change VIN previously reported non-clean now listed clean/undisclosed
- vin returned lower VIN relisted $-10,000 vs prior
- vin returned higher VIN relisted +$8,995 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.