We have had our 2015 CR-V to the dealer several times and each time mentioned that when driving down a hill, with the driver's foot off the gas or even on the brake, the engine will sometimes rev up to between 2-3,000 RPM. We were at the dealer again today and was told this is normal. If it was normal would it not happen every time you coasted or braked down a hill? It does not happen every time and the rev increase is not for a short time it can be for up to 30 seconds to a minute on a long hill. I asked the dealer if he would put into writing that this was normal but he would only allow us to document on a service ticket and he would say vehicle checked and operation was normal. Has anyone else experienced this? I have driven other vehicles, rentals, with single speed transmissions and never had this occur.