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I have had my RDX for a year and 14,000 miles. I have never experienced a vibration in it and the only thing that feels unusual is when it shifts and changes cylinders at the same time, such as cruising on the freeway and then accelerating to pass, the car bumps up cylinders and downshifts. This is typical for VCE's of any make. Other then that, this is one of the smoothest and quietest cars I have ever driven. I think your dealer is trying to avoid what could be costly warranty work. I drive a combination of highway and city for 12 miles back and forth to work everyday and get 22MPG on the low end and 24MPG on the higher end. If I fill the tank and do all highway, at 70-75MPH I get 27+. Your gas millage seems very out of sort as well. You can never trust the EPA millage when buying a care, they test at absolute perfect conditions. I would take it to a private shop that specializes in Acura/Honda and see what they say. Get away from the dealers, not trustworthy.Report it
I had the same issue. Mainly occurred around 35-40mph driving speeds and was louder when it got cold. There was a tech bulletin at the dealer that the issue is growing with 2013 models of the RDX AWD. There was a replacement of a portion of the AWD drive shaft and was under warranty. After the fix the vibration was virtually eliminated in the winter months and do not even feel it anymore now that it is warmer.Report it
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