Warranties are primarily a sales tool. Buy a car for the car, not for the warranty. By and large, the Mustang is a fairly solid package. What tends to go wrong with every car, from Kia to Merc, is stuff related to the options chosen. More electronics, more problems. that siad, i ain't buying some stripped-out checker cab base car so, I'll take the risk.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto N/A tune. 100 shot nitrous on BBR tune. Best e/t 11.42 at 120.64
2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP