The Apollo was a German automobile manufactured by Ruppe & Son of Apolda in Thuringia from 1910 to 1927; the company had previously offered a car called the Piccolo.
The first Apollo was called the "Mobbel", and featured an air-cooled 624 cc single-cylinder IOE engine.
The model "B", designed by racing driver Karl Slevogt [de], had an OHV 960 cc four-cylinder engine.
Other Apollos had sidevalve four-cylinder engines of up to 3440 cc; some post-1920 models featured wishbone suspension.
The designer of two-stroke engines, Hugo Ruppe [de], was the factory founder's son; in 1920 Apollo took over his air-cooled MAF cars.