So I have a 2015 Toyota Prius. For 40,000 miles its been a great car. After that it started making a strange noise that has scared the crap out of some of my customers and quite frankly my self. So I took it in to the dealership and they cleaned out my air inflow, saying that there was debris in it.
$200.00+ later, it was still revving the engine very high, periodically, while driving. It happened battery full or not.
I went back to the dealer, they said the problem was that someone hadn’t reset the intake flow sensors after the cleaning and replacements.
I didn’t get to drive the vehicle much, because I then got the worst flu ever in the middle of summer, and it turned into pneumonia. So, three weeks later I was back on the road, with a passenger in the car.
They stated, and I quote, “Oh my god, it sounds like your engine is going to explode!”.
I dropped them off and went back to Toyota. This time they had me drive with a mechanic. Of course, the noise wouldn’t duplicate. So I tried driving it every which way , until it did.
The mechanic said its definitely revving high. He then did research and told me that it was probably a bad hybrid battery. Then they called Toyota to get a go-ahead to replace the bad battery.
An hour later they came back and said , “Toyota says its normal for the car to rev when you are driving and the battery is low”. Mind you that it happens when the battery is showing full as well.
Then they give me Toyota care to talk to… They start a case. They came back and said that Toyota’s decision is the same.
Buyer beware, according to my mechanic I went to, after I was unhappy with their response, stated that the engine revving as high as it is can cause it to burn out while in motion. He stated I should probably get the hybrid battery replaced before that occurs, that its wearing down the engine life.
Moral of the Story? Don’t buy a Toyota Prius. I’ll be turning this one in on end of lease. Maybe a Ford C-Max will be better or a Tesla.