2005
Jaguar were bought out in November 2004 by Austrian energy drink company Red Bull and were renamed Red Bull Racing.
During winter testing in 2005, Klien tested several times for Red Bull Racing alongside Vitantonio Liuzzi and David Coulthard.
Klien secured the second race seat at Red Bull, alongside Coulthard.
Klien started the year with points finishes in the first two races before retiring in Bahrain before the race had even started due to an electrical problem.

With both Klien and Liuzzi signed to race for the Red Bull team in 2005, Red Bull announced that Liuzzi would be racing at the next 4 rounds in San Marino, Spain, Monaco and the European Grands Prix instead of Klien.
Originally, Klien was ineligible to be a third driver at these Grand Prix, as he had competed in over six Grand Prix the previous year, but after a majority of teams asked the FIA to remove this ruling, Klien was allowed to take this role at Imola.

The Austrian returned to the race seat for the Canadian Grand Prix and maintained his race seat thanks to his strong performances and Red Bull's increased number of seats from the purchase of the Minardi team (which was renamed Scuderia Toro Rosso, Italian for "Team Red Bull") in 2006.
Klien finished his second year in Formula One with two further points finishes: an 8th-place finish in Turkey and a 5th at the season-finale in China.
After a promising performance in China, it was confirmed in December 2005 that Klien would drive for the Red Bull Racing outfit alongside David Coulthard for the 2006 season.

2006
Klien started 2006 strongly, qualifying in the top 10 for the first 2 races of the season.
In Bahrain he finished 8th, scoring a point.
However, in Malaysia he collided with Kimi Räikkönen on the first lap and had to pit with suspension damage, before eventually dropping out with a hydraulic failure.

In 2006, Klien was unsuccessful in comparison to his more experienced teammate David Coulthard, as the Brit scored the team's first podium and was more consistent than Klien throughout the season.
In August 2006, it was confirmed that Klien would not stay with the Red Bull team for the upcoming 2007 season, or at least as a race driver, due to Red Bull's signing of Mark Webber.
After the 2 points finishes in Bahrain and Germany, there was some uncertainty as to where Klien would go next in his racing career, speculation suggested America as a logical choice for the Austrian, but he refused a ChampCar seat in a Red Bull-backed team for 2007, preferring to chase a Formula One drive with another team.
As a result, the team announced that Klien had been dropped for the last three races of the season in favour of test driver Robert Doornbos.
2005
Jaguar were bought out in November 2004 by Austrian energy drink company Red Bull and were renamed Red Bull Racing. During winter testing in 2005, Klien tested several times for Red Bull Racing alongside Vitantonio Liuzzi and David Coulthard. Klien secured the second race seat at Red Bull, alongside Coulthard. Klien started the year with points finishes in the first two races before retiring in Bahrain before the race had even started due to an electrical problem.
With both Klien and Liuzzi signed to race for the Red Bull team in 2005, Red Bull announced that Liuzzi would be racing at the next 4 rounds in San Marino, Spain, Monaco and the European Grands Prix instead of Klien. Originally, Klien was ineligible to be a third driver at these Grand Prix, as he had competed in over six Grand Prix the previous year, but after a majority of teams asked the FIA to remove this ruling, Klien was allowed to take this role at Imola.
The Austrian returned to the race seat for the Canadian Grand Prix and maintained his race seat thanks to his strong performances and Red Bull's increased number of seats from the purchase of the Minardi team (which was renamed Scuderia Toro Rosso, Italian for "Team Red Bull") in 2006. Klien finished his second year in Formula One with two further points finishes: an 8th-place finish in Turkey and a 5th at the season-finale in China. After a promising performance in China, it was confirmed in December 2005 that Klien would drive for the Red Bull Racing outfit alongside David Coulthard for the 2006 season.
2006
Klien started 2006 strongly, qualifying in the top 10 for the first 2 races of the season. In Bahrain he finished 8th, scoring a point. However, in Malaysia he collided with Kimi Räikkönen on the first lap and had to pit with suspension damage, before eventually dropping out with a hydraulic failure.
In 2006, Klien was unsuccessful in comparison to his more experienced teammate David Coulthard, as the Brit scored the team's first podium and was more consistent than Klien throughout the season. In August 2006, it was confirmed that Klien would not stay with the Red Bull team for the upcoming 2007 season, or at least as a race driver, due to Red Bull's signing of Mark Webber. After the 2 points finishes in Bahrain and Germany, there was some uncertainty as to where Klien would go next in his racing career, speculation suggested America as a logical choice for the Austrian, but he refused a ChampCar seat in a Red Bull-backed team for 2007, preferring to chase a Formula One drive with another team. As a result, the team announced that Klien had been dropped for the last three races of the season in favour of test driver Robert Doornbos.
Christian Klien