On 14 April 2007 he became the first Russian driver to win a major international single-seater race when he won the opening round of the Formula Renault 3.5 Series season at Monza.

Aleshin returned to Formula Renault 3.5 for the 2010 season, partnering Jake Rosenzweig at Carlin.

He was partnered by Max Chilton, another driver who had previously been employed by Carlin in lower formulae.

He then, however, secured a last-minute temporary GP2 deal with Carlin, only to crash in qualifying for the first round of the season in Turkey, injuring metacarpals in both hands which prevented him from racing.

[6] He returned to action for the following round of the championship at Catalunya, but was then replaced by Oliver Turvey as his money ran out.

The first driver from Russia to race in the Verizon IndyCar Series, Aleshin was in Turn 4 of the two-mile Fontana track—a track where the cars travel at more than 200 mph—when the accident occurred.