I also have a 2018 Toyota CHR and after about 20,000 miles I started hearing what I described as a revving/humming noise under the hood. I reported this to Toyota of Newburgh where I purchased a car several times. They told me that it was nothing wrong with my vehicle. When I took the car in for service the other day and I informed them that revving/humming noise was getting louder they did a diagnostic and reported to me that I need a new transmission. The car only has 68,000 miles on it, I’ve had it for less than five years but it has more than the 60,000 miles that is covered under the warranty. Even though I have done business with this dealership for 30 years they told me there was nothing that they could do. They suggested I reach out to Toyota Customer Service. I have spoken with a representative there and he informed me that he is going to see what he can do to assist would the transmission issue. Now that I have read others postings on here more than ever I believe there is a manufacturer’s defect with many of these vehicles.I have a 2018 CHR with 37k miles. I started hearing a whining noise coming from the front end. So I replaced both front tires thinking maybe they were the problem. When it didn't work I scheduled an appointment to have the transmission inspected (as I suspected that was the problem). Sure enough. The guy said "You're getting half of a new car".