Eng took his first steps in motorsport in Formula BMW. After a few years away in other race series and cars, he returned to the BMW family in 2016. In his first year back, he claimed the biggest win of his career so far, with victory at the 24 Hours of Spa-Francorchamps. In 2017, he was in contention for the title right down to the season finale in the ADAC GT Masters. In 2018, he will make his DTM debut for BMW Team RBM, and will also take part in selected GT races.