A:I am not familiar with the 335xi, but I am with BMW or Bovarian Motor Werks. all BMW's require the same amount of attention to preventative maintainance. They must all be cared for on a daily or weekly basis, depending on the amount of mileage you incurr. They are a precision machine and as such require the best of care. I hope this has helped you in your quest for the ultimate driving experience.
