When the Zbrojovka Brno factory introduced in 1933 its small Z-4 car with a two-cylinder, two-stroke engine and a front-wheel drive, it immediately registered four of these new models in the first year of the Czechoslovak 1000 Mile. The cars competed in category up to 1100 cc, all finished the race, but none achieved much success.

Their participation in the second instalment of this race in 1934 was thus something of a surprise: a total of thirteen Z-4 cars were entered in the category of up to 1100 cc but many of them were specials prepared by the Zbrojovka with more efficient engines and an aerodynamic chassis.

This time, they were extraordinarily successful and in their category, they beat the favourites, which were the Walter Junior SS cars. A Z-4 driven by Mamula and Mašek won with average speed of 92 km/h in category up to 1100 cc and a trio of Z-4 factory cars won the prestigious Prize of the President of the Republic for the most successful team.

• Sport car with liquid-cooled two-stroke two-cylinder engine, located lengthwise behind the front axle, with a front-wheel drive.
• Engine displacement 987 cc, output app. 33,1 kW (45 hp), maximum speed 140 km/h.
• Producer: Československá zbrojovka a. s., Brno.

This car was loaned for the exhibition by doc. Ing. Karel Jaroš.