1987 Porsche 928 S4

2dr Coupe

8-cyl. 4957cc/316hp Bosch LH-Jetronic FI

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

$56,200 CAD*

+8.3%
#4 Fair condition#4 Fair
Value Graph04/2407/2410/24$10k$20k$30k$40k$50kJan 2025
Pricing adjustments
-25% for auto.
Adjustments are in USD
-25% for auto.
Adjustments are in USD

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1978-1995 Porsche 928 stats
Highest sale
$2,518,758 CAD
Lowest sale
$2,795 CAD
Most recent sale
$121,414 CAD
Sales
1469

Photos

31 photosImages may not reflect selected vehicle.

1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
1991 Porsche 928 S4 2dr Coupe Courtesy of Hyman Ltd.
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Model overview

Model description

By the early 1970s, it was clear that increasingly tough and complicated emissions and safety regulations were going to change the American automotive market’s landscape. And since America was Porsche's biggest market, higher-ups reasoned it was only a matter of time before such restrictions hampered the sales appeal of their 911. By developing an entirely new Porsche, one with all the latest federal regulations already incorporated, Porsche hoped to meet the new standards head on. In the meantime, if the Stuttgart company had to kill the 911 because of such standards, it would be prepared to transition.

Engineers were given free rein to "invent" the newest Porsche, and plans for the 928 began in October 1971, with a basic design finalized in 1972. And what a design it was, especially within the walls of a company that had in its 30-year history built nothing but cars with a small engine placed behind the driver. But if America was the target market, a front-engined, rear-wheel-drive V8 Grand Touring car certainly made sense.

The 928 debuted in March 1977 at the Geneva Auto Show, and while Porsche purists bristled at the thought of such a pedestrian layout, the new car received much acclaim. The $28,000 928 borrowed no parts from other Porsches, and its shape was like nothing else--a futuristic design with a low, wide stance, a long, sloping hood, a sharp nose, and an evenly rounded rump. "Telephone dial" wheels completed the package. At the time, design head Tony Lapine stated that "a car which is liked immediately will not hold up over time." Porsche had designed a long shelf life into its latest creation, and at the same time had handsomely incorporated 5-mph safety bumpers front and rear.

The body made use of collapsible polyurethane pieces over front and rear hidden bumpers, with aluminum doors, hood, and front fenders, and steel for the remaining panels. Though now commonplace, at the time, trying to coat such differing materials with a uniform paint job was a feat of ingenuity.

Beneath the handsome and complicated skin lay an advanced and well-balanced powertrain. A 90-degree, all-aluminum, 16-valve, 4.5-liter V8 with Bosch Continuous Injection System (CIS) fuel delivery produced 219 hp and 254 ft-lb of torque. It was mated to a fully synchronized rear transaxle with either a 5-speed manual or optional 3-speed automatic, and weight distribution was nearly perfect at 51%/49%, front to rear.

Suspension was fully independent all around, and Porsche worked hard to perfect the 928's rear suspension, which would allow it to accommodate over-aggressive drivers without the erratic tendencies of snap oversteer. The resulting "Weissach Axle" was an engineering breakthrough, a multi-link setup that made the 928 one of the best handlers in the world.

The cabin was nothing short of plush, with supportive leather seats, an ingenious tilt steering/instrument binnacle, and all the comforts of a true luxury GT. And it could move, too, with 0 to 60 mph coming in just over 7 seconds, with a top speed over 135 mph. By the time the 4.7-liter 928 S arrived in 1983, the car was rated at 146 mph, making it the fastest in America.

Displacement, power, and top speed increased as production continued, with a 5.0-liter appearing in 1985, as well as revised brake and suspension components and a 4-speed automatic to replace the 3-speed. A 928 S4 debuted in 1987, now with 316 hp, and a 928 GT entered the fold in 1989, complete with a limited-slip differential and available only with a 5-speed. The 928 GTS replaced both the S4 and GT for 1993. It featured freshened bodywork and a bigger 5.4-liter engine now putting out 345 hp and capable of 170 mph. It also cost nearly $85,000.

By this time, the 928 had practically disappeared from the American market. Sales had fallen dramatically, and Porsche redoubled its efforts on the 911, which had weathered the regulatory storm mostly unscathed.

In all nearly 61,000 928s were built during the car's 17-year tenure. Even by today's standards, it is a competent, comfortable GT, and a well-sorted one will offer plenty of high-speed thrills over continental distances.

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Common Questions

The value of a 1987 Porsche 928 S4 can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $39,000 USD for a 1987 Porsche 928 S4 in good condition with average spec.

The highest selling price of a 1987 Porsche 928 S4 at auction over the last three years was $212,580 CAD. 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 1987 Porsche 928 S4 at auction over the last three years was $12,187 CAD. 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 54 1987 Porsche 928 S4s sold at public auction.

The most recent auction sale of a 1987 Porsche 928 S4 was $212,580 CAD on February 04, 2025 by RM Sotheby's.

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 representative of stock condition vehicles only and based on various data sources, as detailed in About Our Prices. Value adjustments for optional equipment are in U.S. dollars. 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.CA/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.