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1957 Pontiac Bonneville
2dr Convertible
8-cyl. 347cid/315hp FI
#1 Concours condition#1 Concours
#2 Excellent condition#2 Excellent
#3 Good condition#3 Good
$72,400*
+3%
#4 Fair condition#4 Fair
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Jan 2025
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1956-1957 Pontiac Bonneville stats
Highest sale
$242,000
Lowest sale
$68,300
Most recent sale
$82,500
Sales
88
Photos
27 photosImages may not reflect selected vehicle.
Past sales
$82,500
1957 Pontiac Bonneville Base
Automatic
North America
Jan 24, 2025Barrett-Jackson
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$104,500
1957 Pontiac Bonneville Base
34760 M
Automatic
North America
Jan 18, 2025Mecum Auctions
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$145,600
1957 Pontiac Bonneville Base
Automatic
North America
Mar 2, 2024RM Sotheby's
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$123,200
1957 Pontiac Bonneville Base
North America
Sep 1, 2023Worldwide Auctioneers
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$77,000
1957 Pontiac Bonneville Base
Automatic
North America
Aug 18, 2023Mecum Auctions
View details
$107,535
1957 Pontiac Bonneville Base
Automatic
North America
Aug 7, 2023Hagerty Marketplace
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Model overview
Model description
In the world of rare domestics from the 1950s, it’s hard to get more rare or more desirable than the 1957 Pontiac Star Chief Custom Bonneville – better known as just the Bonneville. Just 630 production examples of these cars were ever made – one per dealer in the United States, plus two prototypes.
All of the Bonnevilles were two-door convertibles. Bonneville models in this year can be identified by the Bonneville name on the rear fenders, and the “Fuel Injection” badges on the front fenders and amidships on the trunk lid.
The engine in the Bonneville was a Rochester fuel-injected 347 cubic inch V-8 at a 10.25:1 compression ratio and yielding an astonishing 315 hp. That amazing engine was mated to a Strato-Flight Hydra-Matic three speed automatic transmission.
Bonnevilles had the option book mostly included – and sold at a price up in the Cadillac range - $5,782 compared to $3,105 for an ordinary Star Chief convertible. Bonnevilles included power everything: steering, brakes, windows, antenna, and seats. Buyers also got Pontiac’s best WonderBar radio, special wheel covers, and an optional continental kit.
If you can manage to find one of these 1957 Bonnevilles, it’s worth buying and restoring. Among the rarest of the rare would be one of the two prototypes – which are reputed to be equipped with four bucket seats instead of the dual benches of the 630 production examples.
Vehicle specifications
- Shipping Weight4285 lbs
- Vehicle Length213.8 in
- Wheelbase - Inches124 in
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Common Questions
The value of a 1957 Pontiac Bonneville can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $72,400 for a 1957 Pontiac Bonneville in good condition with average spec.
The highest selling price of a 1957 Pontiac Bonneville at auction over the last three years was $159,500. 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 1957 Pontiac Bonneville at auction over the last three years was $77,000. 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 10 1957 Pontiac Bonnevilles sold at public auction.
The most recent auction sale of a 1957 Pontiac Bonneville was $82,500 on January 24, 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.