[1] Born in La Colle, Monaco, Coletti enjoyed a successful karting career prior to moving into single-seater racing.

In 2003, he finished as runner-up in the Italian Open Masters ICA–Junior category before winning the Andrea Margutti Trophy and European Championship ICA–Junior titles in 2004.

He also took part in the Formula BMW World Final in Bahrain for ASL Team Mücke Motorsport, finishing in twenty-fifth place.

He also took part in four Formula BMW USA races, winning three of them to finish the season in fifth place, despite missing a large proportion of the championship.

Coletti once again competed in the Formula BMW World Final, held at the Circuit Ricardo Tormo, where he finished in third place, behind Mika Mäki and race winner Christian Vietoris.

[2] In August 2006, Coletti made his debut in the Eurocup Formula Renault 2.0 series, driving for the Cram Competition and Motopark Academy teams, although he failed to score a point in any of the six races he entered.

On 15 May 2009 it was announced that Coletti would race for Prema Powerteam in the Monaco round of the 2009 Formula Renault 3.5 Series, replacing Frankie Provenzano.

[8] He originally finished in eleventh place, but after Marco Barba received a 25-second penalty, Coletti was promoted into the final points paying position in tenth.

[11] He escaped with compressed vertebrae and minor bruising, missing the following day's sprint race as his car's monocoque was written off by the impact.

In the Asia series, he scored a victory in the sprint race at Yas Marina on his way to fourth place in the drivers' standings.