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I have a Bentley gtc 2008. I have notice a hum when driving.

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Not there when stationary...
I have a Bentley gtc 2008. I have notice a hum when driving. Not there when stationary
Submitted: 7 months ago.Category: UK Car
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Answered in 3 hours by:
12/28/2017
UK Auto Mechanic: Wolfgang, Master Vw/Audi Tech replied 7 months ago
Wolfgang
Wolfgang, Master Vw/Audi Tech
Category: UK Car
Satisfied Customers: 5,247
Experience: 15 yr Master VW/AUDI Technician Shop Foreman
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* RATING ANSWERS, please let me know what you need from me so you are pleased with my answer.Does the noise change when turning? Sounds in the front of rear? Thanks
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Customer reply replied 7 months ago
No change when turning. It doesn't seem to come from either the front or back. It is only there when I'm moving. The car was serviced 5 months ago by Bentley.
UK Auto Mechanic: Wolfgang, Master Vw/Audi Tech replied 7 months ago
The faster you go the noise becomes louder?
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Customer reply replied 7 months ago
No. It's pretty constant. I was wondering if it could be the transmission. Lack of transmission oil?
UK Auto Mechanic: Wolfgang, Master Vw/Audi Tech replied 7 months ago

possible but if there are not any leaks i doubt it is low!!

did this noise come about recently?

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Customer reply replied 7 months ago
No leaks. I took it out for a fast drive today. The hum is not there initially. After about 3 miles I started to hear it. It does get a little louder when you go faster. And as you slow so the hum slows.
UK Auto Mechanic: Wolfgang, Master Vw/Audi Tech replied 7 months ago

sounds like its temperature related. like the exhaust. possible the rumble flaps towards the back.

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