Buick Grand National/GNX

Buick Grand National/GNX Market Overview

Built by Buick from 1984-1987, the Buick Grand National/GNX is tracked across 97 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 July 2026, the median asking price for a Buick Grand National/GNX is $52,750, with an average of $59,330. The middle 50% of listings (25th to 75th percentile) are priced between $45,000 and $60,500. The median mileage across active listings is 50,811 miles. Listings spend an average of 89 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 (8), NY (7), FL (7), MI (4), GA (3). Listings are sourced from Classic.com (52), Facebook Marketplace (18), CarGurus (13), hemmings (6), eBay Motors (5), AutoTrader Classics (5).

Buick Grand National/GNX by Model Year

The most commonly listed model year is 1987 with 82 listings. Year breakdown: 1987 (82 listings), 1986 (14 listings), 1984 (2 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 $41,987 across 13 sales, down 4.5% from 2026-Q1 ($43,950).