1973 Triumph Stag

2dr Convertible

8-cyl. 2997cc/145hp 2x1bbl

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

$16,000*

+1.9%
#4 Fair condition#4 Fair
Value Graph04/2407/2410/24$5k$10k$15kJan 2025
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1970-1978 Triumph Stag stats
Highest sale
$39,876
Lowest sale
$1,462
Most recent sale
$12,906
Sales
117

Photos

60 photosImages may not reflect selected vehicle.

1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
1973 Triumph Stag 2dr Convertible Courtesy of Canepa
insurance

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**Figure based on a stock 1973 Triumph Stag valued at $16,000 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 Triumph Stag started life as a 1958 concept called Zebu, designed by Les Moore. When Giovanni Michelotti took over as Triumph’s chief stylist, he revised the idea and the result was undeniably handsome, a four-seat grand tourer with both hard top and soft top. In order to stiffen the body, a T-bar remained when the tops were removed and the framed, full-width grille design was mirrored at the rear.

The plan had been to use the fuel-injected TR5 motor, but difficulties with emissions delayed the American launch until the spring of 1971. A 2,997-cc, 145-hp V-8 was developed, based on two SOHC Triumph-built Saab 99 engines back to back, with aluminum cylinder heads. The Stag was available with automatic transmission or four-speed and overdrive: 0-60 came up in 9.3 seconds on the way to a 116 mph top speed. Steering was rack and pinion, there was independent suspension all round, with McPherson strut up front and coil springs in the rear with trailing arms.

At $5,805 the Stag was not cheap, but it was aimed at the Mercedes-Benz 280SL, which cost $7,469. Unfortunately for Triumph, however, the Mercedes didn’t go wrong at the same rate as the Stag did. Almost all American cars were automatics and the neutral isolator switches regularly failed, disabling the starter. The car also often overheated, as the aluminum cylinder heads could not be torqued down adequately due to the studs entering the block at an angle. Over-tightening the head studs inclined the heads to close around the studs, a process complicated by electrolysis, which made faulty cylinder heads very hard to remove.

Approximately 25,000 Stags were made (1976 production figures are missing) and around 7,500 were exported. The number would have been much greater if Americans’ initial experience hadn’t been so disappointing. Many quality issues were sorted out following the 1973 model year, but by then the Stag’s future had already been determined.

The Triumph Stag is a great concept with a terrific look, but finding an untouched original example can be a task. Many stateside Stags have been modified with Buick or Rover V-8 engines, or GM V-6s (Fords are preferred in the UK), while the originals often still have their original problems. Later cars are pretty well sorted, but left-hand-drive cars are rare given their low sales rate. Still, the right car can be fun, as one of the few small convertibles from the 1970s that can fit a family.

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Common Questions

The value of a 1973 Triumph Stag can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $16,000 for a 1973 Triumph Stag in good condition with average spec.

The highest selling price of a 1973 Triumph Stag at auction over the last three years was $28,612. 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 1973 Triumph Stag at auction over the last three years was $10,053. 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 11 1973 Triumph Stags sold at public auction.

The most recent auction sale of a 1973 Triumph Stag was $12,906 on February 18, 2025 by Car and Classic.

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.