In 2006, Sandell contested the Junior World Rally Championship and won the title with a win and three podiums in six starts.

In 2012, Sandell made his debut with the Mini WRC Team at his native 2012 Rally Sweden and finished a career-best eighth.

Mini parent BMW later terminated its contract with Prodrive,[2] and Sandell no longer raced in WRC after the 2012 season.

Sandell accepted a new drive with Subaru Rally Team USA for 2017 and finished eighth in points.

[5] In 2018, Sandell continued to compete for the team in the newly established Americas Rallycross series, where he finished third in points.