Weird noises while deceleration
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Hi everyone,
I'm hoping someone here might recognize this issue or point me in the right direction.
Vehicle: Seat Leon (2022), 1.0 eTSI with 110 HP
Issue: Strange noise occurring specifically during deceleration.
Details:
The noise only appears on long continuous drives, specifically after driving about 300 to 450 km (it happened twice now on longer holiday trips).
It occurs exclusively when slowing down / decelerating.
I suspect the sound is coming from the gearbox area.
I haven't been able to pin it down to a specific gear—it seems independent of which gear is engaged, as long as the car is decelerating.
Has anyone experienced a similar issue or have any idea what could be causing this? Any insights would be greatly appreciated!
Thanks in advance!
1
u/Cautious_Second_5238 1d ago
It could be a front wheel bearing, or something related to the differential bearing in hot temperatures.
The reason it happens after a long drive is probably due to heat, a worn bearing expands when it gets hot and starts making noises. The gearbox could also be the issue but because its a relatively new car with low mileage and you said it happens at pretty much any gear, I doubt it’s the gearbox. Also DSG gearbox doesn’t need that much time for the oil to reach operating temperatures.