Alexandre Delpérier began his career on Antenne 2 with in internship at the sports service with the help of Sophie Davant, but has stated that he learned the profession without studying in a journalism school.

The same year, he replaced Alexandre Debanne after his motorcycle accident to co-host Vidéo Gag with Bernard Montiel.

From September 2002 to December 2007, he co-hosts one of the morning programs on M6, Star Six Music with Nathalie Vincent (2002–03) and Karine Ferri (2006–07).

In August 2008, he left M6 to become a presenter specialized in automotive sport on channel Direct 8, commenting the races of the World Rally Championship and the Superleague Formula with Paul Belmondo.

Since April 2010, he presents Autosport, a short program of six minutes dedicated to automotive sports news broadcast every Saturday evening.

In March 2010, Arnaud Hermant from Le Parisien revealed the broadcast on Europe 1 of an interview that Alexandre Delpérier would have presented as an exclusive one of Raymond Domenech and Thierry Henry, but it was only a press conference.