High Steady Engine Rev Sound at Speeds 50+
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2014 Mercedes C250
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I have a 2014 C204. It has about 80k miles on it. Lately I hear engine rev-up sound when I reach speeds of 50+. The sound is loud and steady and doesn't seem to get faster or louder as I increase speed. It goes away once I drop below 50MPH. Performance doesn't seem to be affected either. RPMs are around 2k when I take my foot off the gas (going over 50). I don't know what it is or if that's normal. Help! New to MB World.
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