Learn what the seven most expensive cars ever were sold for in auction with the top one reaching nine figures! Find out what makes these cars valuable.

The sale makes the W196 the most expensive Formula One car ever sold, doubling the previous record. The car's predecessor, the Mercedes W196R, held the previous record of 23.35 million euros in 2013.

A streamlined Mercedes raced by Formula One greats Stirling Moss and Juan Manuel Fangio in 1955 set a record for a grand prix car on Saturday, selling at auction for €51.2 million ($53m).

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Catch up on the latest in F1 news, from potential Ferrari team orders for Lewis Hamilton to Australian Grand Prix updates.