Unless the 2015 Mustang GT gets the same MPG as the current V6, I will be able to resist the temptation and keep my 14 V6
As mentioned by others, newer models are often more powerful, and more efficient. Keeping buying new cars is not the best use of the capital. Plus, I don't want to discard all the good mods I have put on my car.
2014 Mustang V6 3.7L 6-spd manual, with MGW shifter, Airaid CAI, BBK shorty headers, Corsa Sport axle back, strut tower brace, JLT oil separator, GT500 differential cover, BG Synchro Shift II gear oil, Redline differential oil.