Buick Grand National/GNX

Buick Grand National/GNX Market Overview

Built by Buick from 1984-1987, the Buick Grand National/GNX is tracked across 96 active listings from 8 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 April 2026, the median asking price for a Buick Grand National/GNX is $49,900, with an average of $54,753. The middle 50% of listings (25th to 75th percentile) are priced between $40,000 and $59,900. The median mileage across active listings is 45,845 miles. Listings spend an average of 123 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 (11), NY (10), CA (9), FL (5), TX (5). Listings are sourced from Classic.com (31), Facebook Marketplace (24), CarGurus (13), hemmings (9), eBay Motors (9), AutoTrader Classics (6).

Buick Grand National/GNX by Model Year

The most commonly listed model year is 1987 with 77 listings. Year breakdown: 1987 (77 listings), 1986 (15 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-Q2, the median sale price was $45,000 across 1 sales, down 10% from 2026-Q1 ($49,999).