An original Mosler MT900S has emerged for sale, reviving attention around one of the most unconventional and often overlooked American supercars ever produced. Built in extremely limited numbers, the MT900S represents a bold late-1990s attempt to challenge European exotics using engineering precision, lightweight construction, and raw performance rather than heritage or luxury appeal.
The Mosler MT900 project was conceived by financier Warren Mosler and brought to life by designer Rod Trenne, best known for his work on the C5 Chevrolet Corvette. The result was a mid-engine supercar that some enthusiasts have long described as the American performance car that could have redefined the segment if circumstances had been different.
Development of the MT900 began during a transitional period in the American performance landscape. Domestic buyers largely chose between traditional V8 muscle cars and smaller sports cars, while mid-engine supercars remained almost exclusively European. Mosler set out to disrupt that imbalance by producing a car that prioritized weight reduction, rigidity, and track-focused dynamics.
At the core of the MT900 was a carbon fiber and honeycomb aluminum tub, paired with steel subframes and an LS-series V8 engine. Early street versions produced around 350 horsepower, with later examples exceeding 400 horsepower. Thanks to the car’s extremely low curb weight and stiff chassis, performance figures placed it among the fastest-accelerating production cars of its era.
The MT900S variant refined the original concept slightly for road use. While still closer to a street-legal race car than a traditional grand tourer, it added modest interior improvements to make ownership marginally more practical. Comfort features were intentionally limited, reflecting Mosler’s philosophy that unnecessary weight compromised performance.
The platform’s credibility was further reinforced through competition. The racing-focused MT900R achieved notable success, including a class victory at the 2003 24 Hours of Daytona. That result validated the engineering behind the road-going cars and helped establish the MT900 as more than an experimental curiosity.
Production across all MT900 variants remained extremely low, with fewer than 100 examples believed to have been built. Today, surviving cars are rare and frequently mistaken for European exotics by casual observers. The first street-legal MT900S delivered went to filmmaker George Lucas, underscoring the early intrigue surrounding the project.
As one surfaces for sale, the Mosler MT900S stands as a reminder of a brief but ambitious chapter in American automotive history—one defined by innovation, restraint, and a willingness to challenge convention without compromise.
Shawn Henry