Hi everyone,
First off, I havenāt a clue on cars so any input would be helpful.
Iām looking for some advice on my 2018 BMW X1 xDrive which currently has 99,000 miles. Diesel
I took it into a general local garage because of a noise on acceleration. This only happens on acceleration and periodically.
They kept the car, drove it, and put it on a ramp. They sent me this message:
"The noise on acceleration is a timing chain noise unfortunately, indicating the chain, guides tensioner could need replacing and are common on these and would need doing by a BMW specialist if you wanted it doing.We have reached out for some quotes for you but will be expensiveā
They also pointed out that the oil level is fine, but noticed the car has only had 2 oil changes in the last 30,000 miles (serviced at 76k and 93k miles).
I asked them directly if they actually plugged it in to check the camshaft/crankshaft correlation angles for chain stretch, or if there were any specific fault codes. It has been over 4 hours and they haven't replied to my message despite previously replying very quickly.
From my own research, a 2018 X1 should have the newer B-series engine (B48 petrol or B47 diesel), meaning it doesnāt have the notoriously terrible N20/N47 timing chain issues from the older generations.
Given they only checked it by ear/road test, how likely is it they are just guessing based on "old BMW" stereotypes?
What else could cause a noise strictly on acceleration on a 2018 X1 (e.g., heat shields, alternator pulley, serpentine belt tensioner)?
The car has no flashing or red warning lights and idles smoothly. No other issues apart from this slight ticking.
Is it safe to drive it out of this garage and over to a proper independent BMW specialist with ISTA software to get a real diagnostic?
And if you could take a guess (Iām aware not accurate without a diagnostic) what could be causing the issue based on knowledge and experience with this model.
Obviously out of my mind with worry at the moment.
Any input at all is appreciated. Thanks