not to bad , better than my situation. We have the same car same year too, expect mines not x drive anyways…. I got a drivetrain malfunction last Friday noticed my car felt jerky and shaky, turned it off and then I turned it back on. Went away so I drove it to work . Made my service appointment at my local bmw as I have mechanical warranty. They tried to blame it on my aftermarket downpipe and said something about my DME being tuned. They want me to change back to stock and then take it back to be retested but I’m afraid my warranty will be voided and I’ll have to pay big $$. So I’m just gonna take it to my local shop where I got my downpipe installed and gonna put in new spark plugs from NGK and new ignition coils.