ASC McLaren (Mercury) Capri: The Evolution of a Rare 1980s Specialty Vehicle
The ASC McLaren Mercury Capri represents one of the most unusual and intriguing chapters in American automotive history — a rare, coach‑built performance variant of the Mercury Capri produced in limited numbers from 1984 to 1986. Unlike typical factory trim levels, this vehicle was the result of a collaboration between Mercury, ASC (American Sunroof Company, later American Specialty Cars), and McLaren’s American division, blending custom bodywork, suspension upgrades, and premium appointments to create a distinctive pony‑car alternative. This article explores the origins, evolution, variants, production figures, and legacy of the ASC McLaren Mercury Capri, and places it in context within both Mercury’s broader model lineup and the sport compact performance landscape of the 1980s.
Origins of the Mercury Capri and ASC’s Role
The Mercury Capri nameplate traces its U.S. origins to the mid‑1970s, where successive generations would appear through the early 1990s. In its 1979–1986 incarnation, the Capri was essentially a Mercury‑branded version of the Ford Fox‑body Mustang with distinctive styling cues and trim levels sold through Lincoln‑Mercury dealerships. Its conventional trims included base Capri, RS, GS, and 5.0‑equipped versions, with V8 power available in later years under Mercury’s performance RS/5.0 labels.
In the early 1980s, engineer Peter Muscat developed a prototype convertible from a Capri coupe, inspired by his experience with European roadsters. Mercury executives and ASC saw potential in the concept, combining ASC’s expertise in convertible conversions with an alliance with McLaren’s U.S. division for suspension and performance enhancements.
ASC McLaren Capri: An Overview (1984–1986)
Concept and Launch
ASC (American Sunroof Company, later American Specialty Cars) was widely known for aftermarket sunroof installations and low‑volume specialty builds. After Muscat’s prototype drew interest, ASC was contracted to build ASC McLaren Capri models — essentially Mercury Capris modified with bespoke bodywork, suspension changes, and interior upgrades, sold through Mercury dealerships as a more upscale and performance‑oriented Capri.
The ASC McLaren Capri was offered for three model years (1984, 1985, and 1986) — effectively the last three years of this generation of Capri. Production was limited and voluntary orders were placed through dealerships with unique DSO codes specifying vehicles destined for ASC conversion.
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Production and Variants by Year
1984 — The Debut Year
The ASC McLaren Capri debuted in 1984 in extremely limited numbers: approximately 50 convertibles and 10 coupes were delivered to customers. These early cars were mostly painted in midnight blue, and set the stage for more substantial offerings in subsequent years.
In this first year, ASC’s modifications included:
- Convertible Conversions: Roof removed from coupe bodyshells and modified with a manual top and bespoke rear tonneau.
- Coupe Enhancements: Visual upgrades and suspension modifications in keeping with McLaren’s involvement.
- Upgraded interiors with trim enhancements and special wheels.
1985 — Peak Output and Expanded Offerings
In 1985, the ASC McLaren Capri program expanded significantly, with 257 convertibles, 150 coupes, and 30 special‑edition “Grand Prix IV” coupes built. The larger production run reflected growing dealer interest and customer demand for the unique package.
Improvements during this year included McLaren’s Supersport suspension, upgraded tie‑rod ends from the Thunderbird Turbo Coupe, and the use of Ford Motorsport’s B303 camshaft — all intended to improve handling dynamics on the shared Fox‑body platform.
1986 — Final Year and Expanded Colors
By 1986, the final model year of the Mercury Capri chassis, ASC continued the McLaren program with 245 convertibles, 115 coupes, and 47 “EuroCoupe” versions — a de‑contented variant offered without some of the audio and accessory equipment, allowing a somewhat lower entry price.
The EuroCoupe was aimed at buyers who wanted the sporty look without the full suite of premium options, and came in several body colors such as Oxford White, Midnight Blue, Smoke Charcoal Grey, Raven Black, and Silver Metallic — broadening choice beyond the earlier limited palettes.
In total, approximately 557 ASC McLaren Capri convertibles were built over the three years, and an additional number of coupes (215 in 1985–1986) received the ASC treatment.
Technical and Styling Characteristics
Convertible Conversions
The convertible conversion was a major undertaking and required extensive modifications to the Capri’s unibody structure:
- Roof removal: The coupe’s roof was removed and the A‑pillars were bent back several inches before reinforcing the windshield frame and adding strategic bracing to restore torsional rigidity lost in the conversion.
- Convertible top and storage: The custom cloth top folded into a flush‑fitting hard tonneau cover behind the front seats — reminiscent of luxury European roadsters rather than a typical American convertible top.
- Bracketry and reinforcements: Additional welding and chassis reinforcement were necessary under the dash, behind where rear seats once sat, and along the transmission tunnel area to give the car acceptable structural stiffness despite the lack of a fixed roof.
These modifications made the ASC McLaren convertible unique among Fox‑body cars of the era, as Mercury’s factory Capri never had a convertible version otherwise.
Coupe and EuroCoupe Upgrades
ASC McLaren offered coupe versions that were enhanced with:
- Visual upgrades: Ground effects, body striping, and special Campagnolo honeycomb‑style wheels.
- Suspension tweaks: McLaren‑designed springs and shock valving, often lowering the car and improving responsiveness.
- Interior appointments: Upgraded interior trim, premium stereos, built‑in radar detectors, and sometimes Recaro bucket seats.
The EuroCoupe variant in 1986 simplified the package to save cost, removing the premium audio system and certain accessories but retaining the core conversion and styling elements.
Engine and Performance
Most ASC McLaren Capris were equipped with the 5.0‑liter V8 — the same high‑output V8 available on the 5.0 Capri — which delivered improved performance for the period. In the early years, it used a Holley carburetor with around 175 hp, while later models received hotter cams and fuel injection, yielding approximately 200 hp or more, which translated into competitive acceleration for the mid‑1980s.
Although the conversion process did not dramatically increase horsepower on its own, McLaren‑tuned suspension and steering upgrades gave ASC McLaren Capris distinct handling improvements over a stock Capri — making them not just stylish but more engaging to drive in their era.
Price Positioning and Market Reception
ASC McLaren Capris were premium variants compared with standard Mercury Capris. According to period sources, the cost of the convertible conversion could add over $12,000 to the base price of a Capri, on top of the initial purchase price. This placed them at a premium compared with competitors such as the Mustang GT convertible, limiting their sales volume despite their uniqueness.
The coupes were somewhat less expensive but still carried a notable price premium due to their bespoke bodywork and assorted upgrades.
End of Production and Rarity
The ASC McLaren Capri program ended after the 1986 model year largely because Mercury discontinued the Capri and shifted focus toward other, more profitable platforms. Subsequent ASC work migrated to the Fox‑body Mustang platform through 1990, but the Capri’s era had passed.
Today, ASC McLaren Capris are very rare — with fewer than 600 convertibles and a couple hundred coupes built total over three years — and represent obscure but cherished pieces of 1980s automotive history.
Collector and Enthusiast Perspective
In the car‑collecting world, ASC McLaren Capris attract attention for several reasons:
- Low production numbers: With only a few hundred convertibles and coupes produced, finding an original example is challenging and desirable for collectors.
- Unique convertible engineering: The bespoke roof conversion and flush tonneau design stand apart from typical factory convertibles of the era.
- Period‑specific styling: The McLaren‑inspired suspension and cosmetic upgrades reflect 1980s automotive tastes and engineering experimentation, making these Capris interesting historical artifacts.
- Community interest: Online enthusiast forums and classic car sites often spotlight ASC McLaren Capri examples and restorations, contributing to growing awareness.
Values for clean, original ASC McLaren Capris vary widely based on condition, history, and rarity of options, but compared to mainstream collectibles of the era, they remain affordably rare — often far below equivalent Mustangs from the same period despite their uniqueness.
Future Outlook and Legacy
Although no new ASC McLaren Capris will ever be produced, the model’s legacy is secure as a quirky and rare variant of a 1980s pony‑car sibling. Several trends indicate ongoing interest:
- Restoration projects: Enthusiasts continue restoring surviving examples, bolstered by parts compatibility with other Fox‑body cars.
- Historical recognition: Classic car events and coverage increasingly include obscure models like ASC McLaren Capris, expanding appreciation beyond mainstream names.
- Online documentation: Dedicated enthusiast sites and social media communities disseminate production data and ownership stories, helping preserve knowledge of these rare vehicles.
Due to their limited numbers and unique blend of coach‑built character and Fox‑body underpinnings, ASC McLaren Capris are likely to remain sought after by niche collectors and fans of 1980s performance cars for years to come.
The ASC McLaren Mercury Capri stands as a distinctive and rare product of automotive collaboration during the 1980s — representing a period when specialty firms could work with mainstream manufacturers to create bespoke variants that stood apart from normal production lines. Built from 1984 through 1986, these convertibles and coupes blended Mercury’s sporty Capri platform with ASC’s coach‑built expertise and McLaren’s suspension knowledge, resulting in a handful of vehicles that remain unusual and collectible today. Though far from mainstream in production volume, their story adds depth and nuance to the broader tale of Lincoln‑Mercury’s performance efforts and the Fox‑body era’s quirks and creativity.
