got 2 520d m sport - but why the sound difference ???

[atto40]

Hello All 

As the title says i have 2 520d m sports, 2014black and 2015white. They both run perfect but I'm just wondering why there is a difference in engine noise when revved? the 2015 has less miles but sounds more tractory ( if thats even a word lol ) . When idle they are both the same, so i wonder why the difference in the 2015white and should i be worried? 

 

btw - the 2015 white had a recent timing change ( got a 12 month warranty on it, but cannot remember what it sounded like before)

final note - ive owned both cars only a few months. 

please have a listen to the 2 vids - they were both started today in the morning on cold starts

 

my friends are saying ive gone mad and its just 1st world problems lol 

[Greydog]

Hi Atto

Welcome to the Forum

Try swapping the acoustic engine covers car to car to see if it makes a difference ?

Dave

[TCon]

Maybe the oils are different. Try an oil change in both using the same oil and filters in both and see what it sounds like. Admittedly its minor but I agree that owners do know the sounds of there cars. I for one can tell just from the sound when my car engine is coming up to oil change time just from the sound.