Rare 1987 Buick GNX Will Sell at Auction

A low-mileage Buick GNX, unit 450 of 547, is set to conclude its auction bidding in Texas on September 24.

Updated on Sept. 19, 2026 in Performance Vehicles

Rare 1987 Buick GNX Will Sell at Auction

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A 1987 Buick GNX with only 30 miles on the odometer has appeared for auction on Bring a Trailer. The vehicle is currently located in Texas and features a 3.8-liter turbocharged V6 engine.

Why it matters

The Buick GNX remains a significant collector vehicle due to its limited production run and performance capabilities developed in collaboration with McLaren Engines. This specific listing offers a nearly delivery-mileage example for automotive enthusiasts.

The vehicle is unit 450 of 547 produced and features a 3.8-liter turbocharged V6 rated at 276 horsepower and 360 lb-ft of torque. It carries a four-speed automatic transmission and a limited-slip differential.

The players

Buick

An American automotive brand that partnered with ASC Inc. and McLaren Engines to create the high-performance GNX.

Bring a Trailer

A popular online automotive auction platform where this specific Buick GNX is currently listed for sale.

McLaren Engines

An engineering firm known for its high-performance work that collaborated with Buick to develop the GNX powertrain.

The details

The listing includes the original window sticker from 1987, a clean Carfax report, and a clean California title. The car was originally purchased for $29,290 and was produced through a partnership between Buick, ASC Inc., and McLaren Engines.

1987: Original production and sale of the GNX occurred.
January 2022: The highest recorded sale price for a GNX was reached.
May 2022: The lowest recorded sale price for a GNX was reached.
September 24, 2026: The auction is scheduled to close.

Roadmap

The GNX serves as a hallmark of 1980s American performance engineering, highlighting a historical era where Buick transformed standard models into limited-edition track-capable machines. This auction underscores how these legacy performance cars continue to appreciate against modern luxury and EV alternatives.

Collectors interested in this vehicle should factor in potential maintenance costs for a car that has remained largely stationary for nearly four decades. Buyers should also verify the auction site's buyer's premium fees before finalizing their bidding strategy.

The takeaway

Collectors should carefully inspect low-mileage vehicles for dry rot or other storage-related deterioration before placing high-dollar bids. Understanding the historical market volatility for rare models like the GNX is essential for any serious investment strategy.