This was an advanced four-stroke single-cylinder unit construction double overhead camshaft model of 500cc designed in 1927 by JF Koch.

Passenger cars (only the mid-sized Lady) were also manufactured in small numbers until 1947, for use by government officials.

It consists of a heavily modified Praga V3S 6 wheel drive truck chassis and twin 30 mm AA autocannon.

In June 2011 the company unveiled their new race car Praga R4 at the Dutch Supercar Challenge in Belgium.

According to its owner Petr Ptáček, the company is taking gradual steps, so that Praga cars will not only be seen on racetracks, but also made road-legal.

In 2016, the company delivered the first limited edition of the supersport road car Praga R1R, a derivative of the R1 race-car.

It utilized a 3.2 liter V8 based on the Suzuki Hayabusa engine and produces 530 BHP, with a total weight of only 880 kilograms.