Mick Junior
Mick Junior, the son of Michael Schumacher during the last round of the DJKM (German Junior Kart Championship) on October 05, 2014 in Genk, Belgium. Getty Images

Michael Schumacher's 15-year-old son has crashed while test driving a Formula 4 car at 100mph in east Germany.

Mick Schumacher was racing through the Lausitzring speedway in Brandenburg, eastern Germany, when the car skidded out of control and onto the gravel.

According to German newspaper Die Welt Mick walked away from the accident uninjured.

He began karting seven years ago, and this year reached the German Formula 4, finishing second in the world.

Mick signed a contract with Van Amersfoort Racing to drive in the Formula 4, earlier this month.

Describing the talent of the young protégé, Dutch team's owner Frits van Amersfoort said: "We have watched his skills in test driving and are looking forward to a successful season."

Meanwhile, his father, Michael Schumacher remains in rehabilitation following his near fatal accident in the French Alps in December 2013.

He emerged from his induced coma in June last year, and left hospital in September.|Family friends have reported positive signs of recovery.

Philippe Streiff, a former Formula 1 driver, told French media Schumacher "has yet to recover the power of speech but is 'nevertheless starting to recognise those close to him."

Schumacher's manager, Sabine Kehm, said that he still has a long fight head to recover from his injuries.

"Considering the severe head injuries he suffered, progress has been made in the past weeks and months. There is still, however, a long and difficult road ahead."

"We need a long time," Sabine Kehm said. "He is making progress appropriate to the severity of the situation."