In 2008 Engel was signed as a factory driver by AMG Mercedes to drive a one-year-old car run by Mücke Motorsport in the Deutsche Tourenwagen Masters for the 2008 season.

After leaving DTM, Engel spent the 2012 year making several guest appearances in selected sports car racing championships worldwide as a member of the AMG Customer Sports team, winning the fifth round of the 2012 Australian GT Championship at the Phillip Island Grand Prix Circuit, driving a Mercedes-Benz SLS AMG GT3 prepared by Erebus Racing.

[2] Engel made his V8 Supercar debut in 2013, driving a Mercedes E63 AMG entered by Erebus Motorsport (formerly known as Stone Brothers Racing).

Next to his commitments in V8 Supercar for Erebus Motorsport he competed in the 2013 Macau GT Cup with a Mercedes-Benz SLS AMG GT3 scoring pole position and a lap record in qualifying.

Narrowly missing out on the victory due to sustaining a puncture on the front left while leading, 2 laps before the end.

Making his debut in the Bathurst 12 Hour racing for Erebus Motorsport together with Bernd Schneider (racing driver) and Nico Bastian Engel scored pole position with a lap record of 2min03.8586 and winning the inaugural Allan Simonsen Pole Position Trophy.

The German trio dominated the race for 9 hours before an issue forced them to pit for repairs dropping them 7 laps down.

Racing for the Mercedes-AMG Driving Academy team in a Mercedes-Benz SLS AMG GT3 Engel returned to Macau winning the 2014 Macau GT Cup ahead of his teammate Renger van der Zande scoring a very popular 1-2 win in the gambling capital against the strong competition of Audi, BMW, Porsche and other factory teams and drivers.

Engel won the 12 lap qualification race from third on the grid after Stefan Mücke was penalised for a Safety car procedure infringement.

Through Engel's victory combined with the 4th-place finish of his teammate Renger van der Zande Mercedes-Benz won the inaugural FIA GT Manufacturers World Cup.

In 2017, Engel rejoined the DTM with Mercedes-Benz taking his maiden DTM win at the Moscow raceway In 2018, racing for Mercedes-AMG Team Black Falcon Engel went on to win the prestigious Blancpain Endurance Series title with his co-drivers, Luca Stolz and Yelmer Buurmann.

Racing for Mercedes-AMG Team GruppeM he went on to win the Suzuka 10h Intercontinental GT Challenge round sharing the car with Raffaele Marciello and Tristan Vautier.

At the FIA GT World Cup in Macau, Engel finished second with his Mercedes-AMG GT3 behind the winning BMW M6 GT3 of Augusto Farfus.

In 2022, Engel won his third Macau Gran Prix GT Cup racing for Mercedes-AMG team Craft Bamboo.

Later that year he also took the class win at the Petit Le Mans 10h and 3rd at the Sebring 12h in GTD PRO for Weathertech Racing together with Jules Gounon and Daniel Juncadella.

In the final stint Engel collided with his Daytona winning team mate Jules Gounon while fighting to regain the lead.