# Christian Klien

Christian Klien (born 7 February 1983) is an Austrian racing driver, who competed in Formula One between 2004 and 2010.
Born and raised in Hohenems, Klien competed in Formula One for Jaguar, Red Bull and HRT, scoring 14 championship points across 51 Grands Prix.

## Racing career

Born in Hohenems, Klien started his motorsport career in his early teens. He raced in karting championships in both Austria and Switzerland, before moving to Formula BMW. After winning several titles in lower Formulas, Klien moved into Formula One, driving for the Jaguar Racing team, alongside Mark Webber. At the end of 2004, however, Jaguar sold its Formula One team to Red Bull, which renamed it Red Bull Racing. In an unusual arrangement, Klien shared a race seat with Italian Vitantonio Liuzzi. He stayed at Red Bull for 2006, whilst Liuzzi moved to the Red Bull junior team, Scuderia Toro Rosso.
After an unsuccessful 2006, Klien's old teammate Mark Webber replaced him for the 2007 season, news Klien learned from Webber himself. Klien was offered alternatives to Formula One for 2007, including driving in the ChampCar series, but he refused and aimed for a seat in Formula One. He secured the test driver's seat at Honda, despite competition from other drivers, including Gary Paffett.
On 2 February 2008 Klien signed as BMW Sauber's reserve and test driver for the 2008 Formula One season, alongside Estonian Marko Asmer.

### Pre-Formula One

Klien became enthused about racing when his dad brought him to watch a go-kart race. This enthusiasm for the sport was only increased after meeting Brazilian Formula One driver Ayrton Senna. The Austrian started his career at the age of 13. From 1996 to 1998, Klien won several kart races in both Switzerland and his native Austria, becoming the Suisse champion in his first year.
In 1999, Klien moved to racing in the Formula BMW ADAC Junior Cup, winning four races and finishing fourth in the series. The following year, he moved into the main Formula BMW ADAC Championship with Team Rosberg, finishing the series ranked tenth overall and third in the rookie rankings. Continuing in the series in 2001, Klien managed to win five races, and ended up third in the series. Joining JD Motorsport for the Italian winter Formula Renault series, he won one event, which led to a drive for the team in German Formula Renault for 2002.
Klien won four races, winning the German title, and finishing fifth in the European series. From there, Klien moved into the Formula Three Euroseries, with Mücke Motorsport, winning four races and finishing runner-up to Ryan Briscoe. Klien also won the 2003 Marlboro Masters event at Zandvoort.

### Formula One
#### Jaguar (2004)

In December 2003, Klien was signed as a race driver for the Jaguar Formula One team for the 2004 season, replacing Justin Wilson, who had replaced Antônio Pizzonia for the final five Grands Prix of the 2003 season. He had significant pressure on him as second driver to his more experienced teammate Mark Webber, but was the first driver to ever outqualify Webber from the same team.
Klien proved to be considerably reliable over the season, retiring only on four occasions out of the possible 18. Klien's only points scoring finish in his debut season came in Belgium, where Klien finished sixth; scoring three Championship points. He finished alongside Cristiano da Matta and Nick Heidfeld in joint 16th in the Drivers' Championship.

#### Red Bull (2005–2006)
##### 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 four 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 eighth-place finish in Turkey and a fifth 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-ten for the first two 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 Scot 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 two points finishes in Bahrain and Germany, there was some uncertainty as to where Klien would go next in his racing career, speculation suggested the United States as a logical choice for Klien, 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 fired for the last three races of the season in favour of test driver Robert Doornbos.

#### Honda and BMW Sauber (2007–2009)

On 15 November 2006, Honda Racing announced the signing of Klien as their test and reserve driver for the 2007 season. The Austrian made his debut for the Japanese works team at the Circuit de Catalunya, during the early pre-season testing during late November 2006. At the 2007 British Grand Prix, he replaced the injured Jenson Button for the second free practice session on Friday. On 11 July 2007, Klien was released by Honda F1 to test with Spyker with a view to replacing Christijan Albers who was released because of sponsorship problems. However, the seat went to Japanese driver Sakon Yamamoto.
In 2008 Klien signed as BMW Sauber's test and reserve driver for the 2008 Formula One season. He also signed with Peugeot to race in 24 Hours of Le Mans. Driving the Peugeot 908 HDi FAP he finished third overall with Ricardo Zonta and Franck Montagny. In October he participated in Petit Le Mans in the American Le Mans Series, driving with Peugeot's factory drivers Marc Gené and Nicolas Minassian.
Klien remained in the position of BMW Sauber's test and reserve driver for 2009. He also returned to Le Mans with Peugeot, finishing sixth overall in a 908 shared with Pedro Lamy and Minassian.
For 2010, Klien was understood to be an option for Sauber before the seat went to Pedro de la Rosa.

#### HRT (2010)

Klien was then tipped to become Hispania Racing's reserve driver despite being second favourite to ex-US F1 man José María López but neither Klien or López got the seat. It went to former Super Aguri F1 and Spyker F1 driver Sakon Yamamoto. However, he was later signed by Hispania as well as Yamamoto. He took part in his first Grand Prix weekend for three years at the Spanish Grand Prix, where he drove in the first practice session in place of Karun Chandhok. He replaced Chandhok again at the European Grand Prix where his session was made difficult by problems with his car. At the Singapore Grand Prix he was confirmed as a replacement for the ill Sakon Yamamoto, marking his first grand prix since the 2006 Italian Grand Prix. He qualified in 22nd place, over a second ahead of team mate Bruno Senna, and ran just ahead of him in the race until a mechanical problem forced him to retire. He replaced Yamamoto for the final two races of the season in Brazil and Abu Dhabi, but the team did not retain his services into the 2011 season.

## Post-Formula One

After Formula One, Klien began racing in a number of categories including endurance racing, sports cars and V8 Supercars. He was close to a deal with Peugeot to race in the World Endurance Championship in 2012 before the French company withdrew from racing.
Klien has taken part in a number of V8 Supercar drives, including the Bathurst 1000 where he teamed up with Russell Ingall.
Since late 2012, Klien writes a monthly column for the Pitpass.com website.
In 2014, Klien signed a deal with NewBlood By Morand Racing to race in their 2014 ELMS campaign.
In 2017, Klien joined the Bundesheer (Austrian Armed Forces) and will continue his racing career in addition to military service. He became an expert for ServusTV's coverage of Formula One from the start of the 2021 season.
Klien competed in the 2021 Deutsche Tourenwagen Masters part-time by driving a McLaren for the Polish JP Motorsport team in a total of three two-race rounds. After making his debut in the third round at Zolder, he returned to the grid in the next round at the Nürburgring and in the sixth round at Assen. His fifth-place finish in the first race at Assen was his only top-10 finish in six races.
In 2022 Klien continued racing GT3 machineries for JP Motorsport, making a switch to GT World Challenge Europe Endurance Cup and GT World Challenge Europe Sprint Cup.

## Racing record
### Career summary

| Season | Series | Team | Races | Poles | Wins | Points | Position |
| 1999 | Formula BMW Junior | ADAC Sport München | 20 | 1 | 3 | 193 | 4th |
| 2000 | Formula BMW ADAC | Team Rosberg | 19 | 0 | 0 | 57 | 10th |
| 2001 | Formula BMW ADAC | Team Rosberg | 19 | 3 | 5 | 232 | 3rd |
| 2002 | Formula Renault 2000 Eurocup | JD Motorsport | 8 | 0 | 0 | 92 | 6th |
| 2002 | Formula Renault 2000 Germany | JD Motorsport | 14 | 2 | 4 | 278 | 1st |
| 2003 | Formula 3 Euro Series | Mücke Motorsport | 20 | 6 | 3 | 89 | 2nd |
| 2003 | Masters of Formula 3 | Mücke Motorsport | 1 | 0 | 1 | N/A | 1st |
| 2004 | Formula One | Jaguar Racing | 18 | 0 | 0 | 3 | 16th |
| 2005 | Formula One | Red Bull Racing | 15 | 0 | 0 | 9 | 15th |
| 2006 | Formula One | Red Bull Racing | 15 | 0 | 0 | 2 | 18th |
| 2007 | Formula One | Honda F1 Team | Test driver | Test driver | Test driver | Test driver | Test driver |
| 2007 | Formula One | Spyker F1 Team | Test driver | Test driver | Test driver | Test driver | Test driver |
| 2008 | 24 Hours of Le Mans | Peugeot Sport Total | 1 | 0 | 0 | N/A | 3rd |
| 2008 | American Le Mans Series | Team Peugeot Total | 1 | 1 | 0 | 26 | 17th |
| 2008 | Formula One | BMW Sauber F1 Team | Test/Reserve driver | Test/Reserve driver | Test/Reserve driver | Test/Reserve driver | Test/Reserve driver |
| 2009 | 24 Hours of Le Mans | Team Peugeot Total | 1 | 0 | 0 | N/A | 6th |
| 2009 | American Le Mans Series | Team Peugeot Total | 1 | 0 | 0 | 20 | 25th |
| 2009 | Le Mans Series | Team Peugeot Total | 1 | 1 | 1 | 11 | 19th |
| 2009 | Formula One | BMW Sauber F1 Team | Test driver | Test driver | Test driver | Test driver | Test driver |
| 2010 | Formula One | Hispania Racing F1 Team | 3 | 0 | 0 | 0 | 27th |
| 2011 | 24 Hours of Le Mans | Aston Martin Racing | 1 | 0 | 0 | N/A | NC |
| 2011 | Le Mans Series | Aston Martin Racing | 1 | 0 | 0 | 0 | NC |
| 2012 | International V8 Supercars Championship | Walkinshaw Racing | 3 | 0 | 0 | 168 | 51st |
| 2012 | International Superstars Series | Swiss Team | 2 | 0 | 1 | 32 | 17th |
| 2013 | International Superstars Series | Scuderia Giudici | 2 | 0 | 0 | 8 | 24th |
| 2013 | Auto GP | Zele Racing | 2 | 0 | 0 | 6 | 18th |
| 2013 | ADAC Procar Series | Liqui Moly Team Engstler | 2 | 1 | 1 | 10 | 6th |
| 2013 | European Le Mans Series - LMP2 | Morand Racing | 2 | 0 | 0 | 28 | 11th |
| 2014 | European Le Mans Series - LMP2 | Newblood by Morand Racing | 5 | 0 | 1 | 68 | 3rd |
| 2015 | FIA World Endurance Championship | Team ByKolles | 2 | 0 | 0 | 0 | 34th |
| 2015 | Super GT - GT500 | Lexus Team SARD | 1 | 0 | 0 | 0 | NC |
| 2015 | Renault Sport Trophy - Elite Class | Zele Racing | 3 | 0 | 0 | 0 | NC† |
| 2015 | Renault Sport Endurance Trophy | Zele Racing | 2 | 0 | 0 | 0 | NC† |
| 2016 | Blancpain GT Series Endurance Cup | Emil Frey Racing | 2 | 0 | 0 | 6 | 41st |
| 2017 | Blancpain GT Series Endurance Cup | Emil Frey Jaguar Racing | 5 | 0 | 0 | 1 | 50th |
| 2017 | Intercontinental GT Challenge | Emil Frey Jaguar Racing | 1 | 0 | 0 | 0 | NC |
| 2018 | Blancpain GT Series Sprint Cup | Emil Frey Lexus Racing | 10 | 0 | 0 | 15.5 | 13th |
| 2018 | Blancpain GT Series Endurance Cup | Emil Frey Lexus Racing | 5 | 0 | 1 | 35 | 9th |
| 2020 | International GT Open | JP Motorsport | 12 | 1 | 1 | 68 | 6th |
| 2020 | International GT Open - Pro-Am | JP Motorsport | 12 | 4 | 4 | 62 | 2nd |
| 2020 | GT World Challenge Europe Endurance Cup | JP Motorsport | 2 | 0 | 0 | 0 | NC |
| 2020 | GT World Challenge Europe Endurance Cup - Pro-Am | JP Motorsport | 1 | 0 | 0 | 2 | 26th |
| 2021 | International GT Open | JP Motorsport | 6 | 1 | 0 | 22 | 16th |
| 2021 | International GT Open - Pro-Am | JP Motorsport | 6 | 1 | 2 | 29 | 8th |
| 2021 | Deutsche Tourenwagen Masters | JP Motorsport | 6 | 0 | 0 | 0 | NC† |
| 2021 | GT World Challenge Europe Endurance Cup | JP Motorsport | 1 | 0 | 0 | 0 | NC |
| 2022 | GT World Challenge Europe Sprint Cup | JP Motorsport | 8 | 0 | 0 | 0 | NC |
| 2022 | GT World Challenge Europe Sprint Cup - Pro-Am | JP Motorsport | 8 | 0 | 4 | 99.5 | 2nd |
| 2022 | GT World Challenge Europe Endurance Cup | JP Motorsport | 4 | 0 | 0 | 10 | 26th |
| 2022 | ADAC GT Masters | JP Motorsport | 2 | 0 | 0 | 0 | NC† |
| 2023 | GT World Challenge Europe Sprint Cup | JP Motorsport | 10 | 0 | 0 | 0 | NC |
| 2023 | 24H GT Series - GT3 | JP Motorsport | 1 | 0 | 0 | 28 | 7th |
| 2024 | Nürburgring Langstrecken-Serie - TCR | JP Motorsport | | | | | |
$^†$ As Klien was a guest driver, he was ineligible to score points. $^*$ Season still in progress.

### Complete Formula Renault 2000 Germany results

(key)
| Year | Entrant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | DC | Points |
| 2002 | JD Motorsport | OSC1 1 1 | OSC1 2 1 | HOC 1 2 | HOC 2 1 | LAU 1 2 | LAU 2 2 | NÜR1 1 2 | NÜR1 2 19 | SAL 1 21 | SAL 2 17 | NÜR2 1 1 | NÜR2 2 3 | OSC2 1 9 | OSC2 2 2 | 1st | 278 |

### Complete Formula Renault 2000 Eurocup results

(key)
| Year | Entrant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | DC | Points |
| 2002 | JD Motorsport | MAG 4 | SIL Ret | JAR 9 | AND 4 | OSC 5 | SPA DNS | IMO 5 | DON 2 | EST 7 | 6th | 92 |

### Complete Formula 3 Euro Series results

(key)
| Year | Entrant | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | DC | Points |
| 2003 | ADAC Berlin-Brandenburg | Dallara F303/008 | HWA-Mercedes | HOC 1 4 | HOC 2 6 | ADR 1 3 | ADR 2 21 | PAU 1 Ret | PAU 2 7 | NOR 1 Ret | NOR 2 10 | LMS 1 2 | LMS 2 1 | NÜR 1 Ret | NÜR 2 1 | A1R 1 5 | A1R 2 5 | ZAN 1 1 | ZAN 2 2 | HOC 3 23 | HOC 4 3 | MAG 1 Ret | MAG 2 3 | 2nd | 89 |

### Complete Formula One results

(key)
| Year | Entrant | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | WDC | Points |
| 2004 | Jaguar Racing | Jaguar R5 | Cosworth CR-6 3.0 V10 | AUS 11 | MAL 10 | BHR 14 | SMR 14 | ESP Ret | MON Ret | EUR 12 | CAN 9 | USA Ret | FRA 11 | GBR 14 | GER 10 | HUN 13 | BEL 6 | ITA 13 | | JPN 12 | BRA 14 | | 16th | 3 |
| 2004 | Jaguar Racing | Jaguar R5B | Cosworth CR-6 3.0 V10 | | | | | | | | | | | | | | | | CHN Ret | | | | | | 16th | 3 |
| 2005 | Red Bull Racing | Red Bull RB1 | Cosworth TJ2005 3.0 V10 | AUS 7 | MAL 8 | BHR DNS | SMR TD | ESP TD | MON TD | EUR TD | CAN 8 | USA DNS | FRA Ret | GBR 15 | GER 9 | HUN Ret | TUR 8 | ITA 13 | BEL 9 | BRA 9 | JPN 9 | CHN 5 | 15th | 9 |
| 2006 | Red Bull Racing | Red Bull RB2 | Ferrari 056 2.4 V8 | BHR 8 | MAL Ret | AUS Ret | SMR Ret | EUR Ret | ESP 13 | MON Ret | GBR 14 | CAN 11 | USA Ret | FRA 12 | GER 8 | HUN Ret | TUR 11 | ITA 11 | CHN | JPN | BRA | | 18th | 2 |
| 2007 | Honda Racing F1 Team | Honda RA107 | Honda RA807E 2.4 V8 | AUS | MAL | BHR | ESP | MON | CAN | USA | FRA | GBR TD | EUR | HUN | TUR | ITA | BEL | JPN | CHN | BRA | | | – | – |
| 2010 | Hispania Racing F1 Team | Hispania F110 | Cosworth CA2010 2.4 V8 | BHR | AUS | MAL | CHN | ESP TD | MON | TUR | CAN | EUR TD | GBR | GER | HUN | BEL | ITA | SIN Ret | JPN | KOR | BRA 22 | ABU 20 | 27th | 0 |

### Sports/Touring car racing
#### Le Mans 24 Hours results

| Year | Team | Co-drivers | Car | Class | Laps | Pos. | Class pos. |
| 2008 | Team Peugeot Total | Franck Montagny Ricardo Zonta | Peugeot 908 HDi FAP | LMP1 | 379 | 3rd | 3rd |
| 2009 | Team Peugeot Total | Nicolas Minassian Pedro Lamy | Peugeot 908 HDi FAP | LMP1 | 369 | 6th | 6th |
| 2011 | Aston Martin Racing | Stefan Mücke Darren Turner | Aston Martin AMR-One | LMP1 | 4 | DNF | DNF |
| 2014 | Newblood by Morand Racing | Gary Hirsch Romain Brandela | Morgan LMP2-Judd | LMP2 | 352 | 10th | 6th |

#### American Le Mans Series results

| Year | Entrant | Class | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Rank | Points |
| 2008 | Team Peugeot Total | LMP1 | Peugeot 908 HDi FAP | Peugeot HDi 5.5 L V12 (Diesel) | SEB | STP | LNB | UTA | LIM | MID | AME | MOS | DET | PET 2 | MON | 17th | 26 |
| 2009 | Team Peugeot Total | LMP1 | Peugeot 908 HDi FAP | Peugeot HDI 5.5 L Turbo V12 (Diesel) | SEB 4 | STP | LNB | UTA | LIM | MID | AME | MOS | PET | MON | | 25th | 20 |

### Complete European Le Mans Series results

| Year | Entrant | Class | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | Rank | Points |
| 2009 | Team Peugeot Total | LMP1 | Peugeot 908 HDi FAP | Peugeot HDI 5.5 L Turbo V12 (Diesel) | CAT | SPA 1 | ALG | NÜR | SIL | 19th | 11 |
| 2011 | Aston Martin Racing | LMP1 | Lola-Aston Martin B09/60 | Aston Martin 6.0 L V12 | CAS | SPA | IMO | SIL$^1$ 9 | EST | NC | 0 |
| 2013 | Morand Racing | LMP2 | Morgan LMP2 | Judd HK 3.6 L V8 | SIL | IMO | RBR | HUN 5 | LEC 2 | 11th | 28 |
| 2014 | Newblood by Morand Racing | LMP2 | Morgan LMP2 | Judd HK 3.6 L V8 | SIL 3 | IMO Ret | RBR 5 | LEC 1 | EST 2 | 3rd | 68 |
$^1$ Driver run for the Intercontinental Le Mans Cup, no points awarded for the Le Mans Series.

### Complete V8 Supercar results

| Year | Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | Pos | Points |
| 2011 | Rod Nash Racing | YMC R1 | YMC R2 | ADE R3 | ADE R4 | HAM R5 | HAM R6 | BAR R7 | BAR R8 | BAR R9 | WIN R10 | WIN R11 | HID R12 | HID R13 | TOW R14 | TOW R15 | QLD R16 | QLD R17 | QLD R18 | PHI Q | PHI R19 | BAT R20 | SUR R21 15 | SUR R22 Ret | SYM R23 | SYM R24 | SAN R25 | SAN R26 | SYD R27 | SYD R28 | | | 77th | 60 |
| 2012 | Walkinshaw Racing | ADE R1 | ADE R2 | SYM R3 | SYM R4 | HAM R5 | HAM R6 | BAR R7 | BAR R8 | BAR R9 | PHI R10 PO | PHI R11 PO | HID R12 | HID R13 | TOW R14 PO | TOW R15 PO | QLD R16 | QLD R17 | SMP R18 | SMP R19 | SAN Q 19 | SAN R20 11 | BAT R21 9 | SUR R22 | SUR R23 | YMC R24 | YMC R25 | YMC R26 | WIN R27 | WIN R28 | SYD R29 | SYD R30 | 51st | 168 |

### Complete Bathurst 1000 results

| Year | Team | Car | Co-driver | Position | Laps |
| 2012 | Walkinshaw Racing | Holden Commodore VE | Russell Ingall | 9th | 161 |

### Complete International Superstars Series results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
| Year | Team | Car | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | DC | Points |
| 2012 | Swiss Team | Maserati Quattroporte | MNZ 1 | MNZ 2 | IMO 1 | IMO 2 | DON 1 | DON 2 | MUG 1 | MUG 2 | HUN 1 4 | HUN 2 1 | SPA 1 | SPA 2 | VAL 1 | VAL 2 | PER 1 | PER 2 | 17th | 32 |
| 2013 | Scuderia Giudici | BMW M3 (E92) | MNZ 1 | MNZ 2 | BRN 1 Ret | BRN 2 6 | SVK 1 | SVK 2 | ZOL 1 | ZOL 2 | ALG 1 | ALG 2 | DON 1 | DON 2 | IMO 1 | IMO 2 | VAL 1 | VAL 2 | 24th | 8 |

### Complete Auto GP results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
| Year | Entrant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Pos | Points |
| 2013 | Zele Racing | MNZ 1 | MNZ 2 | MAR 1 | MAR 2 | HUN 1 | HUN 2 | SIL 1 | SIL 2 | MUG 1 8 | MUG 2 9 | NÜR 1 | NÜR 2 | DON 1 | DON 2 | BRN 1 | BRN 2 | 18th | 6 |

### Complete FIA World Endurance Championship results

| Year | Entrant | Class | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Rank | Points |
| 2015 | Team ByKolles | LMP1 | CLM P1/01 | AER P60 Turbo V6 | SIL Ret | SPA Ret | LMS | NÜR | COA | FUJ | SHA | BHR | 34th | 0 |

### Complete Super GT results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
| Year | Team | Car | Class | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | DC | Points |
| 2015 | Lexus Team SARD | Lexus RC F | GT500 | OKA | FUJ | CHA | FUJ | SUZ 11 | SUG | AUT | MOT | NC | 0 |

### Complete GT World Challenge Europe Sprint Cup results

| Year | Team | Car | Class | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pos. | Points |
| 2018 | Emil Frey Lexus Racing | Lexus RC F GT3 | Pro | ZOL 1 Ret | ZOL 2 20 | BRH 1 11 | BRH 2 14 | MIS 1 9 | MIS 2 Ret | HUN 1 6 | HUN 2 13 | NÜR 1 5 | NÜR 2 7 | 13th | 15.5 |
| 2022 | JP Motorsport | McLaren 720S GT3 | Pro-Am | BRH 1 16 | BRH 2 17 | MAG 1 21 | MAG 2 17 | ZAN 1 18 | ZAN 2 Ret | MIS 1 | MIS 2 | VAL 1 15 | VAL 2 16 | 2nd | 99.5 |
| 2023 | JP Motorsport | McLaren 720S GT3 | Pro | BRH 1 21 | BRH 2 11 | MIS 1 Ret | MIS 2 37† | HOC 1 30† | HOC 2 Ret | VAL 1 13 | VAL 2 11 | ZAN 1 23 | ZAN 2 18 | NC | 0 |
$^†$ Driver did not finish the race, but was classified as he completed over 90% of the race distance.

### Complete Deutsche Tourenwagen Masters results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
| Year | Team | Car | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Pos | Points |
| 2021 | JP Motorsport | McLaren 720S GT3 | MNZ 1 | MNZ 2 | LAU 1 | LAU 2 | ZOL 1 12 | ZOL 2 14 | NÜR 1 15 | NÜR 2 12 | RBR 1 | RBR 2 | ASS 1 5 | ASS 2 Ret | HOC 1 | HOC 2 | NOR 1 | NOR 2 | NC† | 0† |
$^†$ As Klien was a guest driver, he was ineligible to score points.