I had a warranty on Midas Gold muffler, i had an annoying clunking noise at the rear of the car and thought it was the tailpipe. So being a hi-tech precision mechanic that i am i started kicking the tailpipe and bending it down and it snapped off the muffler. Went to Midas and got a free replacement and the clunking noise was still there. Turned out to be Sears lousy shocks doing the noise and had them replaced under their warranty too. I would've replaced my alternator under warranty too but Gateway Auto Supply went out of business and got replaced by O'Reilys Hi price Lo quality. If only Metrinch had a local store so i would'nt have to spend ten bucks to get my stuff replaced.