Single-seaters In 2001, Porteiro drove in the
Spanish Formula Three Championship, finishing fourth in the standings, with one win. In 2002 he began racing in the
World Series by Nissan. He finished 18th in the standings in 2002, 14th in 2003 and seventh in 2004. He finished fifth in 2005, when the series became Formula Renault 3.5. In 2006, Porteiro raced in the
GP2 Series with
Campos Racing, finishing 22nd in the standings.
Touring cars . Porteiro made his
touring car debut near the end of 2006, driving a
BMW 320si for
ROAL Motorsport at the
European Touring Car Cup, finishing fifth. He impressed the team enough to earn a full-time drive in their
World Touring Car Championship team, BMW Team Italy-Spain, in 2007. He scored his first ever win at
Brno, and finished twelfth in the final standings. In
2008, he got his second win at
Oschersleben, ending the year tenth overall. For
2009, Porteiro was replaced by fellow Spaniard
Sergio Hernández. Porteiro switched teams with him, moving to the independent
Proteam Motorsport. He finished second in the Independent's Trophy. Porteiro was left without a drive for the 2010 season, as Hernández returned to Proteam after ROAL's departure from the WTCC. == Racing record ==