Buick Grand National/GNX Market Analysis — August 2026
Executive Summary
The Buick Grand National/GNX market is currently stable, with a year-over-year price increase of 2.1%. The average asking price for active listings suggests a strong demand for these vehicles, particularly for well-maintained models. An actionable insight is to focus on acquiring models from 1986 and 1987, as they command higher prices and have a more substantial sales volume.
Market Snapshot
- Current inventory: 88 active listings
- Median asking price: $49,450 (historical median: $39,000)
- Price trend: Stable (2.1% YoY)
- Market velocity: 75 days average time on market
PRICE TRENDS & APPRECIATION
Analyzing the quarterly trends, the market has shown stability with fluctuations in median prices. For instance, in 2026-Q1, the median price was $43,950, while it increased to $56,491 in 2026-Q3, indicating a potential appreciation trend. However, the average price in 2026-Q2 was $50,965, suggesting some variability. Overall, the market appears to be appreciating slightly, particularly for models sold in the last quarter.
Auction Market Dynamics
The sell-through rate stands at 73.5%, indicating a healthy auction market. The median price for sold vehicles is $39,000, while the median high bid is $38,250, suggesting a narrow reserve gap. This indicates that sellers are generally realistic in their expectations, as the sold prices are close to what buyers are willing to pay. The ratio of sold to unsold vehicles (541 sold vs. 131 unsold) further supports a healthy market dynamic.
Configuration Value Guide
The body style breakdown indicates that the Coupe configuration is the most common, with 13 listings averaging $109,440. The price by year data shows that 1987 models command an average price of $65,960, while 1986 models average $61,630. This suggests that buyers are willing to pay a premium for later models, particularly the 1987 Grand National.
Mileage Impact
Mileage significantly impacts pricing, with vehicles under 50,000 miles averaging $75,693, compared to $46,954 for those between 50,000 and 100,000 miles, and $38,135 for those over 100,000 miles. This indicates that buyers are willing to pay a premium of approximately $28,000 for low-mileage vehicles, highlighting the importance of mileage in valuation.
Regional Pricing
The geographic distribution shows that vehicles in the West command the highest average price at $75,460, while those in the Midwest average $48,185. This suggests potential arbitrage opportunities for buyers in lower-priced regions, particularly the Midwest, where prices are significantly lower than in the West.
Market Health Indicators
The average days on market is 75, with 6 new listings this week and 14 listings with price reductions. This indicates a moderate supply and suggests that while there is demand, some sellers may need to adjust their expectations. The healthy sell-through rate of 73.5% further supports the notion that the market is in good health.
Investment Outlook
Given the stable trend direction and slight appreciation observed in recent quarters, the Buick Grand National/GNX remains a potentially appreciating asset class. Investors should consider holding onto well-maintained models, particularly from the years 1986 and 1987, as they are likely to retain or increase their value.
Buying Recommendations
For potential buyers, targeting 1986 and 1987 models is advisable due to their higher average prices and sales volume. A realistic price range for these models would be between $40,000 and $65,000, depending on condition and mileage. Buyers should be cautious of listings with high asking prices that exceed recent sold prices, as this may indicate unrealistic seller expectations.
This analysis is generated from CarSearch.Pro's market database (876 historical sales, 88 active listings across 14 marketplaces) and refreshed automatically. It is market commentary, not financial advice.