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Old 02-01-2017, 05:16 PM   #10
SLVRSRFR
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Join Date: Aug 2014
Drives: 2013 BRZ 6MT, 2007 WRX Wagon 5MT
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Funny noises and funny smells are normal in a brand new car for the first couple of thousand miles especially.

I work at a dealership, and pretty much every new car emits a slight "burning" odor after a test drive, as the seals in the engine are still breaking in. It's made a couple of clients panic before, thinking the car was on fire.

But yes the thunk sounds like normal operation for a RWD car differential. Nothing to panic about.
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