1966 Pontiac GTO

2dr Hardtop Coupe

8-cyl. 389cid/360hp 3x2bbl

#1 Concours condition#1 Concours
#2 Excellent condition#2 Excellent
#3 Good condition#3 Good

$41,300*

-4%
#4 Fair condition#4 Fair

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Value Graph04/2407/2410/24$10k$20k$30k$40kJan 2025

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1964-1967 Pontiac GTO stats
Highest sale
$396,000
Lowest sale
$5,500
Most recent sale
$64,575
Sales
2639

Photos

46 photosImages may not reflect selected vehicle.

1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
1966 Pontiac GTO 2dr Convertible Courtesy of RK Motors
insurance

Protect your 1966 Pontiac GTO from the unexpected for only $218 per year**

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**Figure based on a stock 1966 Pontiac GTO valued at $41,300 with OH rates with $100/300K liability/UM/UIM limits. Actual costs vary depending on the coverage selected, vehicle condition, state and other factors. Hagerty determines final risk acceptance.

Model overview

Model description

The Pontiac GTO had been such a success that the model became its own series in 1966 and the body was significantly revised to the familiar “coke bottle” shape, with curving lines and minimal brightwork. GM had finally dropped its corporate policy of capping engine capacity in midsized bodies and GTO sales soared to 96,946 units, which would be the highest sales year the model would enjoy.

The most popular model was the 335 bhp, 389 cid engine with four-barrel carburetor, and there were 19,045 GTOs with the 360 bhp Tri-Power setup. Later in the year the XS engine option was introduced. It was the first Ram Air engine offered, with the Air Scoop package and a hotter camshaft.

Two-thirds of all GTOs (61,279) were sold with manual gearboxes, predominantly M20 wide-ratio and M21 close-ratio 4-speeds. All had dual exhausts. This was the first year for red plastic fender liners, and prices dropped slightly from 1965.

The bubble scoop hood was carried over from 1965 and the GTO grille divided into two deep mesh recesses, with inset turn signals and GTO lettering. Quad headlights remained vertically stacked on each side. The rear panel had horizontally louvered taillights and the C-pillars swept back with a short “tunnel” back window between them. Inside, the bucket seats had more lateral support, though a Strato bench front seat was still available. The four-port dash panel remained the same, but with wood veneer. The optional console and sport steering wheel continued. Metallic brake linings and aluminum front drums were optional for $49.08, and a transistor ignition added $73.67.

A total of 15 exterior paint colors with were offered again: Starlight Black (A), Blue Charcoal (B), Cameo Ivory (C), Fontaine Blue (D), Nightwatch Blue (E), Palmetto Green (H), Reef Turquoise (K), Marina Turquoise (L), Burgundy (N), Barrier Blue (P), Montero Red (R), Martinique Bronze (T), Mission Beige (V), Platinum (W), and Candlelight Cream (Y). Two-tone paint was available in standard colors for $31.07 or in special colors for $114.27. A one-off exterior color cost $83.20.

Six interior trim colors included Black, Blue, Turquoise, Bronze, Red, and Parchment. Five convertible top colors were offered: White, Black, Blue, Turquoise and Beige. One more vinyl top color was offered this year, and the choice was Ivory, Black or Beige.

Overall, U.S. sales dipped slightly but Pontiac sold its 11 millionth car. While Pontiac’s big car sales slipped 8.8 percent, the Tempest line increased sales by 16.8 percent and the company earned more than 10 percent of the market for the first time.

Vehicle specifications

  • Vehicle Length206.4 in
  • Wheelbase - Inches115 in

Equipment

  • StandardOptional
  • Transmission3-Speed Manual Transmission
  • BrakesPower Brakes
  • Power SteeringYes
  • Air ConditioningYes
  • WindowsPower Windows
  • Comfort Equipment Heater/Defroster
  • SeatsBucket Seats
  • TachometerYes

Equipment

Standard

  • Transmission3-Speed Manual Transmission
  • SeatsBucket Seats

Optional

  • BrakesPower Brakes
  • Power SteeringYes
  • Air ConditioningYes
  • WindowsPower Windows
  • Comfort Equipment Heater/Defroster
  • TachometerYes
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Common Questions

The value of a 1966 Pontiac GTO can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $36,383 for a 1966 Pontiac GTO in good condition with average spec.

The highest selling price of a 1966 Pontiac GTO at auction over the last three years was $163,500. The highest prices are usually reserved for rare or exceptionally well-maintained examples with desirable features or modifications and excellent history.

The lowest selling price of a 1966 Pontiac GTO at auction over the last three years was $28,455. The lowest prices are usually paid for examples that have extensive maintenance needs, differ greatly from their original configuration, or have accident histories or title problems.

In the last three years there have been 105 1966 Pontiac GTOs sold at public auction.

The most recent auction sale of a 1966 Pontiac GTO was $88,000 on January 25, 2025 by Barrett-Jackson.

Many factors can increase a car's value including excellent condition, exceptional originality, a recent restoration, low mileage, unique provenance, desirable options, popular or unique color choices, and excellent maintenance records. Upgrades and modifications that enhance performance or aesthetics can also add value.

Factors that can decrease a car's value include unusually high mileage, poor maintenance history, visible wear and tear, accidents or damage, title issues, and gaps in ownership history. Additionally, less popular color choices and extensive modifications that don't appeal to a broad audience can reduce value.

Mileage plays a significant role in a classic car’s value. Lower mileage usually increases value because it indicates a higher degree of originality, is rarer, and suggests less wear and tear. However, cars with exceptionally low mileage may also have maintenance needs due to lack of use. Whether someone should pay more for a vehicle with lower miles will depend on how they plan on using it, and the vehicle's specific condition.

The value of modified cars differs widely based on the type and quality of modifications. While some modifications can significantly increase value, especially performance enhancements and high-quality custom work, others may not add much or could even detract from the car’s value if they appeal to only a limited audience.

All prices shown here are based on various data sources, as detailed in About Our Prices. The Hagerty Price Guide is for informational purposes only and is not intended as financial advice. More information on how forecast models are calculated can be found on Forecasted Values page. For additional information and a complete description of benefits, visit hagerty.com/legal. Purchase of insurance not required for membership in HDC. Hagerty, Hagerty Valuation Tools & Hagerty Drivers Club are registered trademarks of The Hagerty Group LLC, ©2025 The Hagerty Group, LLC. All Rights Reserved. The Hagerty Group, LLC is a wholly owned subsidiary of Hagerty, Inc.