2012 Mercedes-Benz C-Class Consumer Review: '12 C250 unidentified groan
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2012 Mercedes-Benz C-Class Sedan - Consumer Review

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1 of 1 people found this review helpful
'12 C250 unidentified groan
By ppatterson on

Vehicle

2012 Mercedes-Benz C-Class C250 Luxury 4dr Sedan (1.8L 4cyl Turbo 7A)

Review

Hello: I have a '12 C250 luxury sedan with 12K miles. I occasionally hear a groaning sound that occurs intermittently. It's usually noticeable when the car is downshifting to a lower gear. I've taken it to the dealer twice. Though they've reproduced the sound, and not been able to positively identify it, they say that the car is operating "normally." I'm doubtful. Has anyone else experienced this. If so, what was it and how was it corrected. Thanks.

Favorite Features

Robust construction; fairly good mpg's; bluetooth.

Suggested Improvements

- 4 cylinder boosted engine is "gruff" at times. - why is it possible for Lexus to offer a V6 (smoother than a turbo-charged 4 cylinder) with similar 0-60 time (approx 7.1 seconds), identical mpg, regular fuel.
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