I received the letter. My VCM Accord has over 80K miles no issues, my new MDX also has a vcm engine (j35 in both). The Accord has been the most reliable vehicle I've ever had so far (8-10k miles OCI based on olm). As far as mileage with this engine in straight highway runs while the vcm (eco mode) is active, Ive done 34mpg on longer trips at 65mph. It falls of dramatically in city, or stop and go. My normal average is 27mpg per tank. I really have no concern over this, the issue does exist in a small percentage of engines, I will post pics of the plugs when I change them and the timing belt in the next 15-20k miles.