Michael Ammermüller (born 14 February 1986) is a German racing driver. After competing in various junior formulae, he became a test and reserve driver for the Red Bull Racing Formula One team in the 2007 season. Following this, he represented Germany in the final two seasons of the A1 Grand Prix series in 2007–08 and 2008–09, before competing for two seasons in ADAC GT Masters. In 2012, he began competing in the Porsche Supercup series for Walter Lechner Racing. He won three consecutive seasons, having won in 2017, 2018 and 2019.
In 2004, Ammermüller drove the number three car in German Formula Renault and competed in Formula Renault 2000 Eurocup. In 2006, he competed in the GP2 Series for Arden International.
As a member of the Red Bull Junior Team, after Christian Klien was dropped by the Red Bull Racing Formula One team for the final three races of the 2006 season, the team's third driver, Robert Doornbos, was promoted to the second race seat. This left a vacancy in the team, and Ammermüller was promoted to third driver for the last three races of the season. He tested the car for the first time on 14 September, driving the distance necessary for an FIA Super Licence.
After acting as Third Driver for the last three Grands Prix of 2006, Ammermüller was signed by Red Bull as a full-time tester for 2007.
Ammermüller's 2007 GP2 Series season was disrupted by injury, and he was rested in favour of Sébastien Buemi. However, Sebastian Vettel's move to the Scuderia Toro Rosso F1 team left his Formula Renault 3.5 Series seat vacant, which Ammermüller took.
In 2008, Ammermüller raced in the International Formula Master series.
In 2007–08, Ammermüller drove in A1 Grand Prix for Germany. In the 2007–08 season's third race at Sepang, he collided with three cars at turn two in three separate incidents, the first of which took third position from Canada's Robert Wickens in the sprint race. It was deemed avoidable contact, so Ammermüller was demoted to 16th, with Wickens reclaiming third. In the feature race, he collided again with Britain's Oliver Jarvis. He was given a drive-through penalty. Despite this, he made contact at turn two once again with Czech Republic's Erik Janiš, and as a result, was disqualified from the race. On the back of these incidents, he was given the nickname "Hammermüller".
Despite the disqualification, Ammermüller scored his maiden victory three weeks later at Zhuhai.
† As Ammermüller was a guest driver, he was ineligible to score points.
Complete Formula Renault 2.0 Germany results
(key) (Races in bold indicate pole position; races in italics indicate fastest lap)
Complete Eurocup Formula Renault 2.0 results
(key) (Races in bold indicate pole position; races in italics indicate fastest lap)
Complete Formula Renault 2.0 Italia results
(key) (Races in bold indicate pole position; races in italics indicate fastest lap)
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)
Complete Formula One participations
Complete Formula Renault 3.5 Series results