I have noticed that for the past couple of weeks every time I get out of my wifes car or she pulls up and I'm in the garage the car smells like burnt up brakes. I have also noticed the mileage has dropped down to about 20 mpg. So I'm thinking one of the brake pads is dragging or something or maybe the e-brake cables are too tight, I don't know. So how can I check this out? Thanks.