Buick Grand National/GNX

Buick Grand National/GNX Market Overview

Built by Buick from 1984-1987, the Buick Grand National/GNX is tracked across 108 active listings from 7 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 August 2026, the median asking price for a Buick Grand National/GNX is $49,995, with an average of $59,702. The middle 50% of listings (25th to 75th percentile) are priced between $39,000 and $62,995. The median mileage across active listings is 51,485 miles. Listings spend an average of 86 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: IL (10), NY (9), NJ (8), FL (8), TX (6). Listings are sourced from Facebook Marketplace (52), CarGurus (22), Classic.com (19), hemmings (8), AutoTrader Classics (6), eBay Motors (4).

Buick Grand National/GNX by Model Year

The most commonly listed model year is 1987 with 75 listings. Year breakdown: 1987 (75 listings), 1986 (20 listings), 1985 (7 listings), 1984 (4 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 $57,900 across 16 sales, up 21.9% from 2026-Q2 ($47,500).