The History of Mosler Automotive
The Rise and Fall of an American Supercar Manufacturer
Mosler Automotive was a small but influential American high-performance car manufacturer known for producing extremely lightweight, high-speed sports cars and racing machines. Operating primarily from 1993 to 2013, the company built a reputation for engineering innovation, unconventional design philosophy, and strong motorsports performance despite its small production scale. Founded by financier and entrepreneur Warren Mosler, the company evolved from earlier experimental ventures and became known for vehicles such as the Consulier GTP, Intruder, and the Mosler MT900 series.
Although Mosler Automotive never became a high-volume manufacturer, its cars achieved remarkable racing success and developed a cult following among performance enthusiasts. The company ultimately ceased operations in 2013 after being purchased by a British firm, but its vehicles remain notable examples of American boutique supercar engineering.
Founder Warren Mosler: Background and Vision
Mosler Automotive was founded by Warren Mosler, an American hedge fund manager, economist, and automobile enthusiast. Born in 1949 in Manchester, Connecticut, Mosler attended the University of Connecticut, where he studied economics. He later built a successful financial career as a hedge fund manager and co-founded III Offshore Advisors, a firm specializing in arbitrage strategies.
Beyond finance, Mosler had a strong personal interest in engineering and performance automobiles. His philosophy differed from traditional car manufacturers: he believed that extreme weight reduction and structural efficiency were the most important factors in automotive performance, more important than simply adding horsepower.
This engineering outlook drove Mosler to begin developing vehicles that prioritized:
- Ultra-lightweight construction
- Aerospace-inspired materials
- High structural rigidity
- Advanced braking and handling characteristics
These principles formed the foundation of the company that would later bear his name.
Origins: Consulier Industries and the Consulier GTP (1985–1993)
Before Mosler Automotive officially existed, Warren Mosler created Consulier Industries, an engineering and manufacturing company founded in 1985 in Florida. Under Consulier Industries, Mosler began developing a sports car called the Consulier GTP.
The Consulier GTP was radically different from typical American performance cars of the era.
Key features included:
- A composite monocoque chassis made from fiberglass and foam core
- Exceptional structural rigidity
- A curb weight around 2,200 pounds
- A turbocharged 2.2-liter Chrysler four-cylinder engine
Although the engine produced modest horsepower compared to V8 rivals, the extremely low weight allowed the car to deliver impressive performance.
Early Racing Success
The GTP achieved significant racing success in the IMSA (International Motor Sports Association) competition series during the late 1980s and early 1990s. It won several races and even defeated far more powerful competitors.
However, the car became so dominant in its class that race organizers eventually imposed penalties and restrictions to limit its competitiveness. In some events, officials even required Mosler to carry large weight penalties or compete against faster classes.
This controversy highlighted both the strengths and the challenges of Mosler’s unconventional engineering approach.
Creation of Mosler Automotive (1993)
In 1993, the automotive division of Consulier Industries was reorganized and renamed Mosler Automotive. The company established its manufacturing headquarters in Riviera Beach, Florida.
The rebranding allowed Mosler to focus more directly on building exotic road cars and race vehicles under a dedicated automotive brand.
At this stage, production numbers remained extremely small—often only a few dozen vehicles per year—but the company began refining its designs and pursuing higher levels of performance.
Early Mosler Vehicles
Consulier Intruder (1993–1995)
The first vehicle sold under the Mosler brand was the Intruder, essentially an updated version of the Consulier GTP. The Intruder featured improved aerodynamics, styling revisions, and upgraded performance components.
Production remained very limited, with only a small number produced during the mid-1990s.
Mosler Raptor (1996–1997)
The Mosler Raptor represented another evolution of the lightweight sports car concept. It incorporated stronger chassis design and improved suspension geometry. The Raptor helped Mosler refine the engineering principles that would later culminate in the company’s most famous model.
The Breakthrough: Mosler MT900 (2001)
Mosler Automotive’s most significant milestone came in 2001 with the introduction of the Mosler MT900.
Designed by British engineer Rod Trenne, the MT900 combined Mosler’s lightweight philosophy with modern supercar engineering.
Key Specifications
- Engine: 5.7-liter Chevrolet LS1 V8
- Horsepower: approximately 350–435 hp depending on variant
- Weight: about 2,500 pounds
- 0–60 mph: around 3.5 seconds
- Top speed: over 180 mph
The MT900 used a carbon-fiber composite monocoque chassis, a technology normally reserved for high-end racing cars.
This design gave the car exceptional structural rigidity and low mass, producing performance comparable to far more expensive European supercars.
Racing Programs and Motorsports Achievements
Mosler Automotive maintained an active racing program throughout the 2000s, particularly with the MT900R race car.
Major Racing Involvement
The MT900R competed in several series, including:
- FIA GT Championship
- American Le Mans Series
- Rolex Sports Car Series
- British GT Championship
Key Accomplishments
- Multiple British GT Championship race victories
- Class wins in FIA GT competitions
- Strong endurance racing performance
Mosler race cars became known for their durability and speed, often competing successfully against much larger manufacturers such as Ferrari, Porsche, and Aston Martin.
Factory Operations
Mosler Automotive’s manufacturing facility was located in Riviera Beach, Florida, near West Palm Beach.
Unlike mass-production car manufacturers, Mosler’s factory operated more like a specialty engineering workshop.
Production Characteristics
- Extremely low production volumes
- Significant hand assembly
- Customization for individual customers
- Direct engineering involvement in each build
Many components were sourced from established suppliers—such as General Motors engines—but the chassis and bodywork were proprietary Mosler designs.
Annual production rarely exceeded 20 to 30 vehicles.
Hardships and Business Challenges
Operating a boutique supercar company presented numerous challenges.
Limited Production Scale
Because Mosler built vehicles in very small numbers, the company faced difficulty achieving profitability. Research and development costs were high relative to sales volume.
Regulatory Barriers
Small manufacturers must still meet many federal safety and emissions regulations. For low-volume companies, compliance costs can be extremely expensive.
Market Competition
Mosler also competed in a niche market dominated by prestigious European brands such as Ferrari, Lamborghini, and Porsche. Convincing buyers to choose a little-known American manufacturer was a persistent challenge.
Racing Restrictions
Earlier in the company’s history, racing regulators imposed rules that limited Mosler vehicles due to their competitive advantages, which affected marketing exposure.
Despite these difficulties, Mosler continued operating by focusing on a small but dedicated customer base of performance enthusiasts and racing teams.
Marketing and Brand Strategy
Mosler Automotive used several unconventional marketing strategies.
Motorsport as Marketing
Instead of large advertising campaigns, Mosler relied heavily on racing success to promote its vehicles. Winning races provided credibility that helped the small manufacturer compete with global brands.
Engineering Reputation
Mosler also marketed its vehicles around technical innovation, emphasizing lightweight construction and advanced chassis engineering.
Exclusive Production
Low production numbers created exclusivity, which appealed to collectors and enthusiasts seeking rare vehicles.
The company occasionally showcased vehicles at auto shows and specialty performance events, but most sales came through direct customer relationships.
Major Milestones
Several milestones defined Mosler Automotive’s history:
- 1985 – Consulier Industries founded
- 1988 – Consulier GTP introduced
- 1993 – Mosler Automotive officially established
- 2001 – Launch of the MT900 supercar
- 2003–2010 – Major racing success with MT900R
- 2013 – Company sold and operations cease
These moments represent the key phases of Mosler’s development from experimental startup to boutique supercar manufacturer.
Consumer Reception in the United States
Mosler vehicles received generally positive reviews among automotive journalists and enthusiasts.
Common praise included:
- Exceptional handling and cornering ability
- Very low weight
- Strong braking performance
- High structural rigidity
However, there were also criticisms:
- Unconventional styling
- Limited dealership and service network
- High price relative to brand recognition
Despite these limitations, Mosler built a strong reputation among track enthusiasts and collectors.
Notable Mosler Models
Consulier GTP (1988–1993)
The original Mosler-designed vehicle under Consulier Industries. Known for its lightweight construction and racing dominance.
Estimated production: about 80 units worldwide
Mosler Intruder (1993–1995)
An updated version of the GTP sold under the Mosler brand name.
Estimated production: fewer than 20 units
Mosler MT900 (2001–2011)
The company’s flagship supercar and most recognizable model.
Variants included:
- MT900
- MT900S
- MT900R (race version)
Estimated total production: around 100 vehicles worldwide
The Most Successful Model: Mosler MT900
The MT900 was Mosler Automotive’s most popular and successful vehicle.
Reasons for its success included:
- World-class performance
- Lightweight carbon-fiber design
- Strong racing pedigree
- Reliable Chevrolet V8 engine
Sales Figures
Because Mosler produced vehicles in extremely small numbers, exact figures vary.
Estimated totals:
- U.S. sales: approximately 60–70 vehicles
- Global sales: approximately 100 vehicles
Despite modest numbers, the MT900 achieved strong recognition in the supercar world.
Acquisition and Closure (2013)
Mosler Automotive’s final chapter occurred in 2013, when the company was purchased by Rossion Automotive, a British-American automotive firm that produced the Rossion Q1 sports car.
Rossion Automotive itself operated from 2008 to the mid-2010s and was known for building lightweight performance vehicles inspired by the Noble M400.
After the acquisition:
- Mosler’s Riviera Beach facility ceased vehicle production.
- The Mosler brand effectively disappeared from the market.
Rossion reportedly purchased Mosler’s engineering assets and intellectual property, though large-scale production never resumed.
Why Mosler Automotive Was Different
Mosler Automotive stood apart from other manufacturers for several reasons.
Extreme Weight Reduction
Most automakers pursue performance through horsepower increases. Mosler instead prioritized reducing weight, sometimes achieving dramatic performance improvements with smaller engines.
Aerospace-Inspired Construction
Mosler used composite materials and monocoque chassis designs typically found in racing cars or aircraft.
Engineering-Driven Philosophy
The company emphasized structural efficiency and physics-based design, reflecting Warren Mosler’s analytical mindset.
Small-Scale Craftsmanship
Each vehicle was essentially hand-built, making every car rare.
Legacy and Influence
Although Mosler Automotive no longer exists, its influence persists in several ways:
- Demonstrating the effectiveness of lightweight engineering
- Producing race cars capable of defeating larger manufacturers
- Contributing to the tradition of American boutique supercar builders
Mosler vehicles remain prized among collectors because of their rarity and performance.
Current Status and Outlook
As of today, Mosler Automotive is no longer in operation.
The company effectively ended production in 2013 after its acquisition by Rossion Automotive. Since then:
- No new Mosler vehicles have been produced.
- The brand has not been revived.
However, existing Mosler cars continue to appear in collector auctions, track events, and historic racing competitions, where they maintain a reputation for exceptional performance.
Mosler Automotive represents one of the most unusual stories in American automotive history. Founded by financier Warren Mosler and built on unconventional engineering principles, the company proved that lightweight design and intelligent engineering could compete with—and sometimes defeat—far more powerful machines.
From the experimental Consulier GTP to the acclaimed MT900 supercar, Mosler vehicles combined racing capability, exotic construction, and rarity. Despite persistent financial challenges and the difficulties of operating a low-volume manufacturer, the company achieved notable motorsports success and left a lasting impression on performance car enthusiasts.
Though Mosler Automotive ultimately closed its doors in 2013, its legacy endures as a reminder that innovation and passion—rather than sheer production scale—can define a remarkable chapter in automotive history.
