This according to Blue Oval modifier Steeda Autosports, which states that "the 2015 Mustang ended up gaining 200-300 pounds in this remake". Despite the Mustang not being on the market yet, it would appear the leading Ford aftermarketer has been given early access to the 2015 model to help jumpstart its tuning efforts (a rather common development among trusted tuners). If Steeda's assertion is accurate, that would make the challenge of getting the new pony car up to speed for both Ford and aftermarket customizers like Steeda that much greater.
We're waiting for official word from Ford on the veracity of Steeda's claim, but if true, it's bound to be a bit of disappointing news for legions of Blue Oval performance enthusiasts. Watch this space for more.
UPDATE: Important new details have come to light about Steeda's weight-gain assertion for the 2015 Mustang. These details cast doubt on the accuracy of the tuner's assertion. Read all about it in our followup story here.