I would never buy an extended warranty, especially on a newer vehicle that has one of the most reliable engine / drive train out there. Most auto information sources like Edmunds, Consumer Reports, and J.D. Power all say statistics show they are not worth it.
Here are the results of a survey done by Consumer Reports on them:
"Consumer Reports proved the dubiousness of this pitch by surveying 8,000 owners of five- and six-year-old vehicles that had been covered by extended service plans. Sixty-five percent of those surveyed said they spent significantly more for the contract than they got back in repair-cost savings. Respondents said their extended warranty cost them $1,000 on average while providing an average benefit of $700. That means the average loss was $300. A big reason: 42 percent of extended warranties in our survey were never used, in most cases because the vehicle didn't need repairs or the standard manufacturer's warranty sufficed."
Here is what J.D. Power has to say about them:
"When you buy an extended warranty, you are placing a bet. Your bet is that your car will ultimately require more repairs than the cost of the warranty. The warranty provider is also placing a bet. The warranty provider's bet is that your car will not require more repairs than the cost of the warranty. One of you will win the bet, and considering the number of extended warranty providers there are, it would appear that the odds are not in your favor. "