Here is a link to a Chrysler dealer that sells the Chrysler extended warranty online. http://www.chryslerfactoryplans.com/
When I bought my new Grand Cherokee my dealer matched his price. If he wouldn't have, I would have purchased it online. If you get one make sure it's a Chrysler warranty, not a third party.
Here is a copy of the warranty (there are provisions in the Lifetime MaxCare for a rental from day one) Read all the fine print, it's really a service contract, and doesn't cover everything, but it covers most major components. And enjoy your new Compass. We've had ours for almost six years, and love it!