You can work a deal better than these plans. There are several dealers around the country that severely discount the cars if you have a trade in. I got $5000 off $27K sticker for my V6. That's a HUGE discount. And I got the same sorry trade in value I would have got anywhere else on my trade...
I qualify for X-plan through my employer, but I don't see much of a discount. Prices posted on dealer's websites are lower. What's the point? Now I see good discounts using truecar.com.