Well llkooljay,
I have been searching my mind for an answer to your question and the best I can come up with is this......
I used to sell toyota and when I had a customer that had always bought domestic I used a website called Edmonds.com there you can compare any 2, 3 or even 4 cars to each other and let the stats speak for themselves. Ofcourse, you would want to know beforehand how the Ford Focus stacks up to the Toyota Corolla or whatever the case may be. I hope this is helpful.
Also, you may just avoid trying to sell against anyone and just focus on what you have to offer. All cars are not built to last.