Buick Grand National/GNX GNX Market Analysis — September 2026
Executive Summary
The market for the Buick Grand National/GNX GNX remains niche, with limited sales activity and high price variability. Current data indicates a stable trend in pricing, with insufficient year-over-year data to determine a definitive price change percentage. An actionable insight is to monitor the auction outcomes closely, as they provide insight into seller expectations and buyer willingness to pay.
Market Snapshot
- Current inventory: 4 active listings
- Median asking price: $239,950 (historical median: $144,500)
- Price trend: Insufficient data (no YoY price change percentage available)
- Market velocity: 52 days average time on market
PRICE TRENDS & APPRECIATION
The quarterly trends indicate fluctuating prices over the past few quarters. For instance, the median price peaked at $205,000 in Q3 2025, while it dipped to $101,987 in Q1 2025. The most recent quarter (Q1 2026) shows a median price of $192,500, suggesting some recovery from the earlier dip. Overall, the market appears stable but with significant volatility, indicating that while some buyers are willing to pay high prices, others are more cautious.
Auction Market Dynamics
The sell-through rate stands at 76.8%, indicating a relatively healthy market where the majority of vehicles listed at auction are sold. The median price for sold vehicles is $151,900, while the median high bid is $159,400, suggesting a reserve gap where sellers may have unrealistic expectations. The ratio of sold (116) to unsold (30) vehicles indicates that while there is demand, some sellers are not meeting the market's price expectations.
Configuration Value Guide
All active listings are from the 1987 model year, with an average asking price of $264,604 and a median of $239,950. This indicates that the 1987 GNX commands a premium in the market, likely due to its rarity and desirability among collectors. There is no body style breakdown available, but the consistent model year suggests that buyers are primarily focused on this specific configuration.
Mileage Impact
The mileage analysis reveals that vehicles with under 50,000 miles command an average price of $292,838, significantly higher than the overall average asking price of $239,950. This indicates a premium of approximately $52,888 for low-mileage vehicles, highlighting the importance of mileage in determining value.
Regional Pricing
The geographic distribution shows that three of the active listings are categorized as "Unknown" with an average price of $292,838, while one listing from the West is priced at $179,900. This suggests potential regional arbitrage opportunities, particularly for buyers in areas where prices are lower.
Market Health Indicators
With an average of 52 days on the market and no listings showing price reductions, the market appears stable, though the lack of new listings (only 1 this week) could indicate limited supply. The sell-through rate of 76.8% suggests that while demand exists, it may not be robust enough to drive prices higher without more inventory.
Investment Outlook
Given the current trend direction is classified as insufficient data, it is challenging to provide a definitive outlook. However, the fluctuations in quarterly prices suggest that while the asset class has potential for appreciation, it may also experience periods of volatility. Investors should proceed with caution and monitor market conditions closely.
Buying Recommendations
Prospective buyers should focus on the 1987 model year, particularly those with low mileage, as they command higher prices and are more desirable. Target price ranges should be set around the median asking price of $239,950, but buyers should be prepared to negotiate based on the auction outcomes and current market dynamics. Given the reserve gap observed in auction data, buyers should approach bidding with realistic expectations, potentially starting below the high bid median of $159,400 to gauge seller flexibility.
This analysis is generated from CarSearch.Pro's market database (157 historical sales, 4 active listings across 14 marketplaces) and refreshed automatically. It is market commentary, not financial advice.