Giebler began his motorsport career in 1989 in karting, where he was active until 1998. After he had celebrated his Formula racing debut in the U.S. Barber Formula Dodge in 1998, he was oriented towards Europe and in 1999 vice-champion of the French Formula Renault Campus behind Adam Jones. In 2000, Giebler in the French Formula 3 Championship and was in the B-Class Second. Like last year, he had to concede defeat Jones. Following the season, he took part in the Winter Series of Formula Palmer Audi. He decided to fight for the title with 76 to 71 points against Robert Huff for themselves.
2001 Giebler had no permanent cockpit. He took part in two races of the British and six races in the German Formula 3 Championship. 2002 Giebler went in the Spanish Formula 3 Championship at the start. He stood on the podium six times and finished sixth in the drivers' standings. 2003 sparked Giebler after the first race Robbie Kerr in the International Formula 3000 Championship from. Giebler took for Den Blå Avis, the second team of Super Nova Racing, took part in five races. He scored a point and finished 17th in the driver standings. After the sixth race Super Nova Racing ceased the operation of the second team and Giebler was without cockpit.
Instead of continuing to go to European series at the start, Giebler returned to North America in 2004. He started in the Infinity Pro Series to seven of twelve rounds. He won his debut race at the Homestead -Miami Speedway and finished the season in ninth place overall. 2005 Giebler again found no permanent cockpit and took part in a race depending on the Infinity Pro Series and Atlantic Championship. He achieved one top- 10 ranking. In winter 2005/2006 is Giebler told Scott Speed and Bryan Herta a cockpit in the newly founded A1 Grand Prix series with the U.S. team. Giebler participated in four events. A ninth place was his best result. In the course of 2006 Giebler started to three races of the Indy Pro Series, where he finished third once, and to a race in the Atlantic Championship.
In the A1GP 2006/2007 season Giebler was active along with Ryan Hunter -Reay and Jonathan Summerton for the U.S. team. He participated in six of the eleven events. A second place at Zandvoort was Gieblers best result. He was in this season of the pilot, who scored the most points for the U.S. team, which finished ninth in the team standings. Then took Giebler for Playa Del Racing on 8 out of 16 Indy races per part. In addition Giebler debuted in 2007 in the IndyCar Series where he participated for 500 Playa del Racing at Indianapolis. He resigned and was considered 29. 2008 Giebler tried for American Dream Motorsports, the successor team of Playa del Racing, again to meet the qualifications for the Indianapolis 500, where he still took the only party with the old Panoz chassis. However, he had a serious accident, after which he was hospitalized for observation already in training. A qualifying attempt, he did not do as a result. Then Giebler entered into any international racing series in more.
From 2005 to 2010 Gielber was again active in karting.
Phil Giebler Racing
After the end of his active racing career Giebler founded 2010 Kart Racing Team Phil Giebler. The team's goal is to introduce young racer to the professional racing.
- 2002: Spanish Formula 3 ( 6th place)
- 2003: Formula 3000 ( 17th)
- 2004: Infinity Pro Series ( course 9 )
- 2005: Infinity Pro Series (No. 22)
- 2005: Atlantic Championship ( 20th place )
- 2006: A1 Grand Prix
- 2006: Indy Pro Series (No. 21)
- 2006: Atlantic Championship ( # 33 )
- 2007: A1GP
- 2007: Indy Pro Series (No. 20)
- 2007: IndyCar Series ( No. 34 )
- 2005-2010: Karting