One problem related to loud engine noise has been reported for the 2014 Mazda CX-5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Mazda CX-5 based on all problems reported for the 2014 CX-5.
I approached a traffic light, early in the morning on Nov 17, 2014; and just slowed my speed to turn right (did not make a complete stop) when I tried to accelerate my car, speed did not respond and was stuck between 10 to 30 mph. The engine was making a horrible noise, the tachometer was going crazy, got scared, so I pulled to the side of the road and shift gear to p, waited a minute and shift back to d, but car did not respond. Drove about a mile and decided to pull out and turn off my car for a few minutes an restarted fine. I took my car to the dealer the same day. They kept it for two days and said there was nothing wrong. On Feb 13, 2015 had the same problem again, but this time I was at a red light, when tried to accelerate, car did not respond stuck at 25 to 30 mph. I had to make a u turn, to be able to get to a parking lot. I parked and turned off engine, restarted the car and worked fine. I took my car to the dealer again, they kept it a few days and said there is nothing wrong. I do not feel safe driving my Mazda anymore, I was very lucky I did not have an accident the two times I had this problem! there is definitely something very wrong with the power train of this car.