I noticed some weird growling noise the first day, but it was hard to say, so I have been experimenting different conditions and such as what I found:
Is this a turbo thing? Maybe at warm start there are still some hot air trapped in the turbo and starting the engine makes it "growl"
- At cold start, the engine start noise is smooth
- At warm start, such as within 5 mins of shutting down the engine, the start noise has a quick growling noise that lasts for a split second. It's very faint only audible if you pay attention and no music or AC on.
Is this a turbo thing? Maybe at warm start there are still some hot air trapped in the turbo and starting the engine makes it "growl"