The Pontiac Firebird (1970-1981) Trans Am market is signaled to be flat over the next 6 months with a 0.5 probability, then trend downward over 12 months (0.56 probability) and 24 months (0.57 probability), consistently within a volatile regime. Appreciation momentum is 34.78, while depreciation risk stands at 58.48. The High-Yield Bond Spread serves as the strongest leading indicator, correlating at -0.72 with a 22-month lead.
What It's Actually Worth
Blended value of a standard 47 yr, 44k mi example, ~$34.0K 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.
◫ 686 confirmed auction sales·145 months tracked·since 2012-07·406 active listings
Did our model work? 58% 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 53 scored forecasts: 58% got the direction right, median value error ±28%.
━ actual╱ past predictions (ghosts)
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.
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
44%
Low
56%
12 mo
DOWN
57%
Low
58%
24 mo
DOWN
59%
Low
54%
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 2012
$100K invested 2012-07 → today (14.2 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).
━ This car $135K━ S&P 500 $693K━ Gold $255K━ Luxury $533K━ Housing $234K
Lost ground to inflation. The Pontiac Firebird (1970-1981) Trans Am roughly 1.4×'d your money (a real 8% LOSS to inflation). It LAGGED the stock market by about 81% — the same money in the S&P 500 would be larger. It trailed housing (-42%). (Price only — a real round-trip also loses ~10–20% to buy/sell fees and carrying costs.)
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.
Gold (futures) leads by about 7 months (moves against this market, correlation 0.57). Shown shifted forward 7 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Gold (futures), shifted +7mo
Real Disposable Income per Capita leads by about 4 months (moves against this market, correlation 0.56). Shown shifted forward 4 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Real Disposable Income per Capita, shifted +4mo
High-Yield Bond Spread leads by about 20 months (moves with this market, correlation 0.55). Shown shifted forward 20 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ High-Yield Bond Spread, shifted +20mo
Nonfarm Payrolls (jobs) leads by about 16 months (moves against this market, correlation 0.54). Shown shifted forward 16 months so its turns line up with the market's.
Silver leads by about 0 months (moves against this market, correlation 0.52). Shown shifted forward 0 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Silver, shifted +0mo
Bitcoin (USD) leads by about 4 months (moves against this market, correlation 0.52). Shown shifted forward 4 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Bitcoin (USD), shifted +4mo
Case-Shiller National Home Price leads by about 1 months (moves against this market, correlation 0.52). Shown shifted forward 1 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Case-Shiller National Home Price, shifted +1mo
Nasdaq Composite leads by about 1 months (moves against this market, correlation 0.52). Shown shifted forward 1 months so its turns line up with the market's.
━ Pontiac Firebird (1970-1981) Trans Am┄ Nasdaq Composite, shifted +1mo
Why We Think This
Appreciation Momentum
40
Undervaluation
51
Liquidity
46
Speculation Opportunity
43
Depreciation Risk
59
Overvaluation
50
asking +33% vs historic soldasking vs historic spread
vin returned higher VIN relisted +$31,899 vs prior
vin returned lower VIN relisted $-29,600 vs prior
vin returned higher VIN relisted +$31,899 vs prior
vin returned lower VIN relisted $-10,000 vs prior
vin returned higher VIN relisted +$68,625 vs prior
vin returned lower VIN relisted $-29,600 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.