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Discussion Starter · #1 ·

Just want to check with you guys if you also notice / experience rough engine sound (similar to diesel engine sound) for your E250 coupe facelift model ?

mine is C207 2014, facelift model, engine type M274, ODO 10K

Brought the car several times to 2 different local merc dealer (under warranty), but turn out nothing wrong. Dealer said it's normal. new merc turbocharged engine come with rough sound. it's not as smooth as older N/A model

I'm still not convinced until now....

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