The staffs are very knowledgeable about Bmw. my 10 yr old e90 335i w n54 engine went into limp mode. Took the car to my normal Japanese car shop, (Mainly because that shop is close to where I work) they did diagnosed correctly, somewhere there is a vacuum leak; but was not 100% sure where. Drop off my car at Babbitt motor next day at 9am, got a call back around 11am. Problem identified and vacuum leak is fixed. Also did transmissions fluid change, alignment and coolant tank change for preventive maintenance. They use original Bmw parts. The pricing is fair for the quality of the work, cheaper than dealership. They also warranty their work for 2 yrs. tip: ask them what other parts they can change while working on your current job to save labor. I.e. if you change the spark plug, there is no additional labor if you change out coil pack.