this suggests most likely an issue with the throttle. the faults will need to be scanned from the vehicle using a BMW scan tool to verify.
the car is as safe to drive as you feel it is - if the cutting out puts you at risk of an accident, dont drive it. If you never are at risk, you can continue to drive, but this should really be checked out as soon as possible.
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
yes it can be intermittent and unpredictable. it could definitely be the throttle based on this. ultimately the faults need to be scanned to verify. it is not a terribly large job to fix.
Please do not forget to click a positive rating