Buick GNX
The sinister 'Darth Vader' Buick that outpaced supercars.
- Power
- 276 bhp
- 0–60 mph
- 4.7 s
- Top speed
- 124 mph
- Est. value
- $125k–$430k
About the Buick GNX
The Buick GNX (Grand National Experimental) was a limited-edition 'last hurrah' for the G-body Regal, developed in partnership with ASC/McLaren. It featured a Garrett T3 turbocharger with a ceramic impeller and a larger intercooler, resulting in performance that famously eclipsed the contemporary Corvette and even the Ferrari F40 in 0-60 mph sprints. All 547 units were finished in black with distinctive flared wheel arches and functional fender vents. As one of the most iconic American performance cars of the 1980s, it is highly prized by collectors for its menacing aesthetic and giant-killing acceleration.
Buick GNX specs
The Buick GNX produces 276 bhp (206 kW) and 488 Nm (360 lb-ft) of torque. It reaches 60 mph in 4.7 seconds and has a top speed of 124 mph (200 km/h).
| Make | Buick |
|---|---|
| Model | GNX |
| Trim | 3.8 Turbo |
| Years | 1987 |
| Type | Muscle |
| Body style | Coupé |
| Country | United States |
| Production | About 547 built |
| Original price | About $30,000 when new |
| Engine | 3.8-litre turbocharged V6 |
|---|---|
| Displacement | 3,791 cc (3.8 litres) |
| Induction | Turbocharged |
| Power | 276 bhp (206 kW) at 4,400 rpm |
| Torque | 488 Nm (360 lb-ft) |
| Redline | 5,200 rpm |
| 0–60 mph | 4.7 s |
| Top speed | 124 mph (200 km/h) |
| Transmission | 4-speed automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,575 kg (3,472 lb) |
| Power-to-weight | 175 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Buick GNX worth?
A typical Buick GNX is estimated to be worth $125,000 – $430,000 (about £93,000 – £321,000).
Its original price when new was about $30,000.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Buick GNX rarity in CarSpot
The Buick GNX is a Unicorn card in CarSpot, with a rarity score of 100 out of 100. The rarest tier: hypercars, one-offs and cars built in tiny numbers, typically fewer than about 500. A Unicorn card is worth 320 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Buick GNX fun facts
- The GNX was so fast that Buick reportedly underrated its power to avoid overshadowing the flagship Chevrolet Corvette.
- Every original owner received a special GNX-branded jacket, which itself has become a high-value collector's item.
- The car's all-black, menacing appearance earned it the nickname 'Darth Vader's Car' among enthusiasts and the motoring press.