I recently had to use my so called Extended Warranty. Russell the F & I person explained to me when I asked him, what does that mean? Russell said, Bumper to Bumper means everything is covered except Tires and Battery. Okay add it to my balance of car. The problem I had with my 2013 Nissan Sentra SR was a loud road sound coming from the rear of the car. It was determined by Service Person the loud grinding sound I was hearing was the rear Wheel Bearing. It could be fixed. Okay let do it. When I got the Invoice with the price of the Part, which was high and the labor Cost which added up to be over $600.00. Wow, that must be a gold platted wheel bearing. But the wheel was fixed. However, the other problem I had was having was with the Radio with Blue Tooth Sound, hands free. The left button on the radio didn't work property, you cannot turn the volume up. But you could turn it up on the steering wheel. And, when you had the A/C on when driving the person in the other end such as your wife couldn't understand what you where saying, You have to turn off the A/C completely. The Service person I used said they call Nissan and the Radio was "Out of Warranty". I was told I could go to Nissan and buy a after market radio or get one from a car toys place. I told him his guy told me both wheel bearings were replaced. Wrong! I asked the young service person what about my Warranty and he said radios are not covered. What. I asked for the Service Manager, he told me how to use the radio worked. That he looked at it and the sound was okay and it was fixed, nothing wrong with it. Yeah right. They screwed me around on the Radio and the Bumper to Bumper Warranty. Buyer be Ware of used car warranty. They are not transparent with their deal. I still have to turn off my A/C Fan Motor so I can talk on my Phone. That's not right.