What a Buick Grand National/GNX GNX Is Actually Worth
True Value$127,500
Fair Range$112,200 - $142,900
Median Recent Sold$154,000
VerdictCOOLING
As of July 2026, CarSearch.Pro's True Value model estimates a typical Buick Grand National/GNX GNX is actually worth $127,500 (fair range $112,200 to $142,900). Unlike the median asking price shown above, True Value is anchored to 11 recent confirmed sales, normalized for mileage, and blends auction hammer prices (grossed up for buyer's premium) with real-world asking behavior.
Sellers are currently asking a median of $179,900 — about 41% above what these cars have actually been selling for. That gap favors patient buyers: negotiate from the sold data, not the ask.
Priced above trend · momentum cooling — but volatile.
As of July 2026, the Buick Grand National/GNX GNX market has 11 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $179,900, with the middle 50% of listings priced between $18,600 and $189,675. Buick Grand National/GNX GNX prices have increased 3.5% over the past quarter, from a median sale price of $186,030 to $192,500.
The typical Buick Grand National/GNX GNX on the market has 14,000 miles. Listings spend an average of 103 days on market before selling or being removed.
Current Buick Grand National/GNX GNX Pricing
A fair price for a Buick Grand National/GNX GNX in July 2026 is between $18,600 and $189,675 (25th to 75th percentile). Prices range from $18,600 to $300,000 across 11 active listings.
Price Distribution (11 Active Listings)
Percentile
Price
Meaning
10th
$18,600
Budget / project cars
25th
$18,600
Below average price
Median (50th)
$179,900
Typical market price
75th
$189,675
Above average / premium
90th
$300,000
Top tier / low miles / rare spec
The average asking price is $139,272, which is lower than the median, suggesting pricing is relatively symmetrical across the market.
Price by Mileage
Mileage Range
Listings
Median Price
Under 10,000 mi
4
$300,000
10,000 - 25,000 mi
5
$18,600
Buick Grand National/GNX GNX Price Trends
Buick Grand National/GNX GNX prices have increased 3.5% over the past quarter. In 2026-Q1, the median sale price was $192,500 across 1 sales, up from $186,030 in 2025-Q4.
On a year-over-year basis, Buick Grand National/GNX GNX prices are up 88.7% ($192,500 vs. $101,987 a year ago).
Buick Grand National/GNX GNX Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q2
7
$142,000
$139,164
2024-Q3
9
$143,000
$161,333
2024-Q4
2
$133,000
$133,000
2025-Q1
2
$101,987
$101,987
2025-Q2
5
$159,995
$181,959
2025-Q3
7
$205,000
$208,943
2025-Q4
5
$186,030
$181,225
2026-Q1
1
$192,500
$192,500
How Mileage Affects Buick Grand National/GNX GNX Value
Most price guides assume value falls linearly with mileage. It doesn't. CarSearch.Pro learns the actual price-vs-mileage curve for the Buick Grand National/GNX GNX from confirmed sales, referenced to a typical example at about 9,279 miles:
Odometer (approx.)
Value Multiplier
Implied Value
290 mi
1.36x
$173,139
4,139 mi
1.14x
$144,941
10,608 mi
1.03x
$131,952
18,681 mi
0.92x
$117,890
38,730 mi
0.92x
$117,157
54,618 mi
0.83x
$105,297
82,000 mi
0.71x
$90,971
154,919 mi
0.44x
$56,268
300,000 mi
0.37x
$47,427
Low-mileage examples carry a real premium in this market: around 290 miles, cars trade at roughly 1.36x the reference value. At the other end, 300,000-mile examples trade at about 0.37x. Implied values here are anchored to this market's True Value.
Buick Grand National/GNX GNX Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
↓ DOWN
57%
volatile
63% over 46 tests
12 months
↓ DOWN
59%
volatile
65% over 40 tests
24 months
↓ DOWN
63%
volatile
86% over 28 tests
These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the Buick Grand National/GNX GNX — every month we re-run the forecast as if we only knew what was knowable then, and grade it against what actually happened. We publish the hit rate either way. Full methodology & track record →
Where to Buy a Buick Grand National/GNX GNX
The highest concentration of Buick Grand National/GNX GNX listings is in AZ with 2 active listings, followed by CO (2), IL (1), CA (1), FL (1).
Top States by Inventory
State
Listings
AZ
2
CO
2
IL
1
CA
1
FL
1
Buick Grand National/GNX GNX Market Velocity
Buick Grand National/GNX GNX listings spend an average of 103 days on market. This is a slow-moving market. Listings tend to sit for extended periods, giving buyers significant negotiating power. Sellers should be realistic on pricing and patient.
The median time on market is 174 days.
Buick Grand National/GNX GNX Buyer's Guide Summary
Fair price range: $18,600 to $189,675. The median is $179,900. Anything below $18,600 is a strong value; above $189,675 should be premium condition, low miles, or a desirable specification.
Trending up: Buick Grand National/GNX GNX prices have risen 3.5% recently. Buying sooner may save money if the trend continues.
Best value year: The 1987 model year has the lowest median price at $179,900, making it the most accessible entry point into Buick Grand National/GNX GNX ownership.
Negotiate: With an average of 103 days on market, sellers are often willing to negotiate. Listings over 60 days old are especially open to offers.