12/07/2025
The Mercer Series 5 Raceabout is a highly sought-after, iconic early American sports car known for its racing pedigree, minimalist design, and impressive performance for its era. Produced by the Mercer Automobile Company from approximately 1915 to 1923, it is celebrated as one of America's first true sports cars.
Key Features and History
Design & Intent: The Raceabout was designed with a "no-frills" philosophy to "go fast". It featured minimalist bodywork, no doors, no roof, and a low-cut cockpit, prioritizing speed and driver engagement over comfort. A full-width flat glass windshield was typically included but could be folded down for high-speed runs.
Engine & Performance: It was powered by a 298 cubic-inch (4.9-liter) L-head inline four-cylinder engine, designed by Eric Delling, which produced about 70-72 horsepower at 2,800 rpm. The factory guaranteed a top speed of at least 75 mph, a remarkable feat at the time.
Chassis & Handling: The car featured an advanced chassis for its time, with live-axle suspension, semi-elliptical leaf springs, and shock absorbers, which enhanced its handling. Early models had rear-wheel mechanical drum brakes, with four-wheel brakes eventually added to later production models.
Racing Legacy: The Series 5 continued Mercer's strong racing tradition, following the success of the earlier Type 35 Raceabout (1911-1914). These cars were often driven straight from the showroom to the racetrack and were highly competitive in events like the Indianapolis 500 and various endurance races.
Collectibility: Only a few examples of the Mercer Series 5 Raceabout have survived, making it an exceedingly rare and valuable collector's item. Surviving models with documented history are highly sought after by collectors and command high prices at auctions, such as a 1923 model that sold for $445,000.