Four problems related to engine have been reported for the 2007 BMW 335. The most recently reported issues are listed below.
2007 335i coupe - car experiences a sudden loss of power while driving at normal speeds. Car omits malfunction warning lights on the dashboard. This car has had this happen now at least 3 times. The previous two times BMW dealer found faulty fuel pumps and replaced. Now, BMW dealer claims the car needs new cam shafts in the car, meanwhile engine has been taken out of the vehicle completely to attempt the repair. It seems like BMW does not want to acknowledge that the car has major issues.
My 2007 BMW 335 sedan was recently updated with a new ecu software update (referred to as progman 29. 2) and since then the response has become unpredictable. Particularly the car had no turbo lag earlier and after the update the turbo lag has become very perceptible. This has made highway passing unsafe because the car does not behave consistently and sometimes will hesitate for a few seconds and then surge very quickly and at other times drive normally. The unpredictability and turbo lag makes highway passing quite unsafe especially at highway speeds and given the amount of torque in the car (surges are tough to anticipate). BMW does not acknowledge the problem and will not even do any tests on the car. They have been sending me in circles between their na office and local dealer.
Multiple incidents with "engine malfunction. Reduced power" aka limp mode. On my 2007 BMW 335i sedan. BMW replaced fuel pump once, but now seems like the problem is repeating itself.
2007 BMW 335i -high pressure fuel pump failure- car is on its fourth pump (original plus three replacements) in less than three years and 30,000 miles. First failure after 8 months and 7,300 miles. First failure was on highway 66 between arlington and mclean virginia at highway speeds. Has subsequently failed at 25 months and 20,900 miles and again at 35 months and 29,200 miles.