Buick Grand National/GNX

Buick Grand National/GNX Market Overview

Built by Buick from 1984-1987, the Buick Grand National/GNX is tracked across 83 active listings from 6 marketplaces including eBay Motors, Bring a Trailer, Cars & Bids, AutoTrader, CarGurus, Cars.com, and Facebook Marketplace. Each listing is analyzed by AI for quality, value, and condition.

Buick Grand National/GNX Pricing Data

As of October 2026, the median asking price for a Buick Grand National/GNX is $55,000, with an average of $68,336. The middle 50% of listings (25th to 75th percentile) are priced between $42,995 and $72,900. The median mileage across active listings is 43,722 miles. Listings spend an average of 97 days on market before selling or being removed.

Where to Find a Buick Grand National/GNX

The highest concentration of Buick Grand National/GNX listings by state: FL (10), IL (7), NY (6), NJ (4), TX (3). Listings are sourced from CarGurus (22), Classic.com (20), Facebook Marketplace (18), eBay Motors (12), hemmings (6), AutoTrader Classics (5).

Buick Grand National/GNX by Model Year

The most commonly listed model year is 1987 with 56 listings. Year breakdown: 1987 (56 listings), 1986 (19 listings), 1984 (2 listings), 1985 (2 listings).

Buick Grand National/GNX Sales History

CarSearch.Pro tracks 500 historical Buick Grand National/GNX sales from auction houses and dealer records. In 2026-Q3, the median sale price was $49,995 across 31 sales, up 5.3% from 2026-Q2 ($47,500).