Born in Juvisy-sur-Orge, Essonne, Prémat started his motorsport career in karting at the age of 10. In 1998 the French driver became champion in «Ile-de-France». In 2000 he finished as runner-up in 125cc ICC European Championship.[citation needed]
He continued karting until 2000 when he moved up to French Formula Campus, a common starting point for Formula drivers from France.[citation needed]
This earned him a drive in the 2005 GP2 Series, for ART Grand Prix, the team ran by Nicolas Todt. He was behind team-mate Nico Rosberg, but was the highest-place second driver in the championship. Alex remained, alongside the young British driver Lewis Hamilton for 2006, though he was overshadowed, as he finished third whilst Hamilton took the honours.
Eventually he drove for Audi in the 2007 DTM series and participated in the 24 Hours of Le Mans, also with Audi. In 2008 Prémat again raced in DTM, and also the Le Mans Series with Audi. In 2009 French driver remained in this series and also participated in 24 Hours of Le Mans. He was fired by Audi before the final race of the 2010 season for running in the New York Marathon instead of recovering from a heavy crash at the previous round.[4] In 2011 he won his class of the Nürburgring 24 Hour race in a Peugeot RCZ.
Supercars Championship
In 2012, Prémat joined the Australia's leading touring car series, then known as V8 Supercars, driving a Holden VE Commodore for Garry Rogers Motorsport.[5][6] After a disappointing first half of the season, where he struggled to adapt to the championship, he was rested for the 2012 Armor All Gold Coast 600, with Greg Ritter taking his place. He returned to racing at the following round in Abu Dhabi,[7] and went on to finish the season with a best result of thirteenth place at Symmons Plains Raceway. Prémat remained with the team in 2013, starting the season with fourth place in the 2013 Clipsal 500 Adelaide. Despite showing front-running pace, particularly at the start of the season, he failed to achieve consistent results due to poor qualifying and incidents during the races.
In January 2014, Prémat announced he was leaving the team in a full-time capacity,[8] however he would return to the team, which were now competing in a Volvo S60, for the endurance events,[9] placing 5th in the Enduro Cup with full-time driver Scott McLaughlin. Prémat once again joined McLaughlin in the 2015 Enduro Cup, with a best result of fifth at the 2015 Supercheap Auto Bathurst 1000.