Buick GNX
1987–1987
Lowest price
US$110,000
Since 2020
Median price
US$167,750
Since 2020 · n=6
Highest price
US$225,000
Since 2020
Sold cars
6
All time
Sell-through
100%
Of 6 lots
Based on 6 verified auction results
US$192,500
Market value · recent verified sales
+24.9%
12-month change
Hold or Wait
Appreciating but pace slowing. Patient buyers may find better entry.
Median sold price up 24.9% over the last 12 months. Hold if owned; chasing the trend at peak carries risk.
MSRP
—
Collectibility
9/10
Holy Grail
3-Year Forecast
US$383,250
+99%
5-Year Forecast
US$484,279
+152%
Estimates based on 6 verified United States sales.
Market scores
50
Desirability
Thin
30
Liquidity
Excellent
85
Resale Outlook
Marque analyst note
The Buick GNX has climbed to a median price of $192,500, up 24.9% over the past twelve months, signaling sustained appreciation in a market where liquidity remains constrained by the model's extreme rarity. With only 547 examples produced, the GNX occupies a "Holy Grail" tier of collectibility that commands consistent premiums whenever examples trade.
Recent transaction activity reflects the broader uptrend, though the thin liquidity profile—six sales tracked over a twelve-month period—means individual transactions can move market signals meaningfully. The absence of active listings underscores how seldom these cars appear for sale, a dynamic that typically supports price floors during market downturns.
Mileage on transacted examples has averaged 8,000 miles, well below the norm for 1980s-era collector cars and indicative of the preservation standard buyers expect at this price point. Low mileage paired with the model's engineering pedigree and twin-turbocharged performance credentials continues to drive collector interest.
Base projections suggest the median could reach $383,250 within three years, representing a near-doubling from current levels, with five-year appreciation tracking toward $484,279—a 151.6% gain. These trajectories assume continued scarcity, stable condition benchmarks, and sustained demand among a collector base that views the GNX as a conclusive 1980s muscle-car statement.
The "Hold or Wait" signal reflects medium confidence in the persistence of this trajectory; the thin transaction pool makes longer-term directional calls inherently less certain. Buyers seeking exposure should be prepared for illiquid holding periods and the reality that finding an available example at any price may prove as challenging as timing the market itself.
Depreciation Benchmark
- Current avg valueUS$192,500
- Annual appr. rate+24.9%/yr
- Segment average+3.0 to +9.5%/yr
Vehicle History Signals
- Auction lots tracked7
- Damage or salvage declared0 (0.0%)
- No damage declared7 (100.0%)
Est. Annual Ownership Costs
- Insurance (agreed value)US$1,540
- MaintenanceUS$3,220
- StorageUS$3,220
- Depreciation— (appreciating)
- Total annual costUS$7,980
Market Liquidity
- Active Listings0
- Sales Last 12 Months2
- Sell-Through33%
Market Snapshot
- Active Listings0
- Avg Sale PriceUS$164,000
- Avg Mileage at Sale8,000 mi
- Recent Price RangeUS$110,000 – US$225,000
- Total Sales Tracked6
Recent sales
Showing latest 6US$225,000
Bring a Trailer · 6 Jul 2026
8,000 mi
4-speed automatic
US$192,500
mecum · 18 Jan 2026
Jet Black · Automatic
US$143,000
mecum · 7 Sept 2024
Black · Automatic
US$110,000
mecum · 27 Jul 2024
Black · Automatic
US$121,000
mecum · 20 May 2023
Black · Automatic
US$192,500
mecum · 15 Jan 2023
Jet Black · Automatic
Indicative only — not investment advice. Past performance is not a reliable indicator of future value.