Amberg began karting in 2004 and raced primarily in his native Switzerland for the majority of his career, working his way up from the junior ranks to progress through to the KF3 and KF2 categories by 2008, when he became a works driver for the Birel Motorsport team.
Amberg remained in Swiss Formula Renault 2.0 for a second season in 2010, when the series became known as the Formula Renault 2.0 Middle European Championship. He won the title in dominant fashion, finishing on the podium in all ten races he competed in, winning six of them.[3]
Formula Abarth
Also in 2010, Amberg contested a full season in the newly launched Formula Abarth series in Italy. He took a single victory at the opening round of the season in Misano and a further eight points–scoring positions to finish seventh in the championship.[4]
GP3 Series
In October 2010, Amberg made his debut in a GP3 Series car, taking part in the two post–season tests at Estoril and Jerez with Jenzer Motorsport, and in March 2011 it was announced that he had signed to race for ATECHCRS GP in the 2011 season, joining British Formula Renault 2.0 graduates Marlon Stöckinger and Nick Yelloly.[5] He failed to score a point in the sixteen races he entered, taking a best race result of tenth at the sprint race in Barcelona.[6]
Formula Three
In October 2011, Amberg joined De Villota Motorsport to contest the final three rounds of the European F3 Open season.[7] Despite only taking part in six races, he finished eighth in the championship,[8] taking four podium positions including a win at the final round in Barcelona.[9]