One problem related to brakes failed has been reported for the 2018 Mini Cooper. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Mini Cooper based on all problems reported for the 2018 Cooper.
February 21, 2019 I was pulling into a parking space and the brakes temporarily failed. When I pumped them a second time they came to a stop, however by then the car and I had gone over a hedge and side swiped a tree. BMW north America could not find any warning on March 11, 2019 when they reviewed the systems, no warnings at all, no air bags deployed. I was turning in to a familiar parking lot at a slow speed.