NSW Police arrested Ungemach, 52, on Thursday for the incident that took place on February 22, charging him with dangerous and negligent driving leading to the death of Antonio Plati and failing to stop and assist after vehicle impact.
The Sydney Morning Herald reported that Plati, who was found on the side of the road with critical injuries, died later in hospital.
Ungemach, who currently works at the Mosman Rowing Club as its director of rowing, was granted bail and is set to appear at Manly Local Court on September 2.
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Ungemach won two golds at the World Rowing Championships in the 1990s and was part of Germany's coxed four team that set the world record in 1991.
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