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Hello,
I bought my ATS May '14 and have took it to the dealer for proper maintenance - at 7000miles, and at 12000miles.
I recently noticed that it has a very rough idle a/f cold start. ( I live in PA and the temps are currently between 20-30 degrees ).
Is this a problem? Have other ATS owners experienced this? How should I handle this?

*No check engine lights.
*No loss of power.
*Avg MPG is 20.2 - primarily city driving.

Any insights you all can provide would be great. I have read some horrific things about ATS's and do not want to assume anything before getting as many opinions as possible.

Thanks
 

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2014 ATS 2.0T Premium RWD 6MT
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637 Posts
2.0 or 3.6?

the rough idle in the 2.0 is a starting factor for the piston issue(not guaranteed by any means but it is one of the common denominators)

the rough idle in the 3.6 has a TSB with new motor mounts
 
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