After Pentus was active in karting and u. a. 1996 Estonian Junior runner-up had become, he moved in 2000 to the single-seater racing and was an instant champion of the Formula Baltic and the Baltic Formula 4 . Pentus stayed in the Baltic Formula 4 in 2001 and won this championship one more time. In the following two seasons he started again in the Formula Baltic and in 2002 won the runner-up title in this series. He also competed in both the Finnish and Baltic touring car championships in 2002 . In 2004, Pentus switched to the German Formula BMW and took 18th place in the drivers' championship. After starting again in Formula Baltic in 2005, he took part in several races in the Formula Renault 2.0 Eurocup and the northern European Formula Renault in 2006 .
In 2007, Pentus started in the BARC Formula Renault and reached eleventh place in the overall standings. He then competed in the BARC Formula Renault winter championship in winter 2007 and won his first race outside of his Baltic homeland. In 2008, Pentus competed in the British Formula Renault. However, he did not succeed in building on the successes of the previous year and only finished 18th in the overall ranking. He also made his debut in Formula Renault 3.5 . In 2009 , Pentus received a cockpit for the entire Formula Renault 3.5 season at Mofaz Racing . In the second race of the new season, the Estonian achieved his first podium finish in the Formula Renault 3.5 in second place. In the further course of the season, however, he was unable to build on his good start to the season and only scored points in three other races. At the end of the season he finished 16th overall. In 2010 Pentus stayed in Formula Renault 3.5 and started for Fortec Motorsport . As in the previous season, Pentus had a good start to the season and won his first race in this championship in the second race in Alcañiz . This season he managed to score more regularly and he scored another victory on the Hungaroring . At the end of the season he finished fourth in the championship, well ahead of his teammate Jon Lancaster , who was 13th. In 2011 , Pentus contested his fourth season in Formula Renault 3.5 for EPIC Racing . He did not manage to build on the performances from the previous season and he was with a sixth place as the best result and 11 points 24th in the championship. His teammate Albert Costa was fourth with 151 points.
In 2012 , Pentus entered the Auto GP World Series for Virtuosi Racing UK for the second race weekend . After taking a break from a racing weekend, he received a cockpit for two events at Zele Racing . With a fourth place as the best result, he was 15th in the drivers' championship.
Sten Pentus is the younger brother of the Estonian politician Keit Pentus (* 1976).
- "WSbR: Zampieri rises, Pentus remains" (Motorsport-Total.com on March 11, 2010)
- “Motorland Aragon 2011 - Motorland Aragon - Entry list” (renault-sport.com on April 13, 2011)
- “Pentus secures drive with Virtuosi UK to compete in Auto GP from the second round at Valencia” (autosport.com on March 27, 2012)
- "Fong and Pentus back on the grid" (autogp.org on May 2, 2012)
|BRIEF DESCRIPTION||Estonian racing car driver|
|DATE OF BIRTH||3rd November 1981|
|PLACE OF BIRTH||Tallinn , Soviet Union|