Buick Grand National/GNX

Buick Grand National/GNX Market Overview

Built by Buick from 1984-1987, the Buick Grand National/GNX is tracked across 140 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 May 2026, the median asking price for a Buick Grand National/GNX is $46,995, with an average of $86,524. The middle 50% of listings (25th to 75th percentile) are priced between $35,000 and $57,500. The median mileage across active listings is 50,811 miles. Listings spend an average of 57 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: CA (16), TX (12), FL (11), MA (11), IL (10). Listings are sourced from Facebook Marketplace (78), Classic.com (38), CarGurus (13), AutoTrader Classics (7), hemmings (3), eBay Motors (1).

Buick Grand National/GNX by Model Year

The most commonly listed model year is 1987 with 95 listings. Year breakdown: 1987 (95 listings), 1986 (29 listings), 1984 (7 listings), 1985 (1 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 $45,250 across 6 sales, down 9.3% from 2026-Q1 ($49,887).