Klien started his motorsport career in his early teens.
He raced in karting championships in both Austria and Switzerland.
He moved up to Formula BMW.
He won several titles in lower Formula series.
Klien moved into Formula One in 2004.
He drove for  the Jaguar Racing team, alongside Mark Webber.
At the end of 2004, Jaguar sold its Formula One team to Red Bull.
The team was renamed Red Bull Racing.
Klien shared a race seat with Italian Vitantonio Liuzzi.
He stayed at Red Bull for 2006 season.

In 2007, Klien was replaced by Mark Webber.
He was the test driver for Honda.
For 2008 and 2009, he was the reserve and test driver for BMW Sauber.

In 2010, Klien moved to become the test driver for HRT.
For the Singapore Grand Prix Kling replaced Sakon Yamamoto.
HRT reported that Yamamoto was sick from food posining.
For the Brazilian Grand Prix, HRT announced that  Klien would race in place of Yamamoto.
No reason was given.
Klien started his motorsport career in his early teens. He raced in karting championships in both Austria and Switzerland. He moved up to Formula BMW. He won several titles in lower Formula series. Klien moved into Formula One in 2004. He drove for  the Jaguar Racing team, alongside Mark Webber. At the end of 2004, Jaguar sold its Formula One team to Red Bull. The team was renamed Red Bull Racing. Klien shared a race seat with Italian Vitantonio Liuzzi. He stayed at Red Bull for 2006 season. 
In 2007, Klien was replaced by Mark Webber. He was the test driver for Honda. For 2008 and 2009, he was the reserve and test driver for BMW Sauber.
In 2010, Klien moved to become the test driver for HRT. For the Singapore Grand Prix Kling replaced Sakon Yamamoto. HRT reported that Yamamoto was sick from food posining. For the Brazilian Grand Prix, HRT announced that  Klien would race in place of Yamamoto. No reason was given.
Christian Klien