Join Date: May 2002
Location: Pittsburgh
Programs: MR LT Titanium, AA LT PLT, UA SLV, Avis PreferredPlus, HH Gold, Hertz PC, National Executive, etc.
Posts: 31,670
Regardless of the cause, more weight = more fuel used. Short/fat, tall/average - the engines don't differentiate. It's not a fat penalty, it's a usage based fee.
Conceptually I have no issue with it (even at 6' 2", average build but heavier than most due to height), but the costs of doing it would outweigh the benefits.