StrategyPage examines MRAP drawbacks

The list of problems is large, and include poor off-road performance, difficulty maneuvering along narrow village and city streets, high fuel consumption, too high (exposing turret gunners getting snagged by wires, often electrical ones, and more prone to tip over), and poor internal design (for example, the drivers seat is too cramped for a soldier wearing armor).
(read more at StrategyPage)

The story goes on to mention methods used to get around some of the drawbacks, and returns to the oft-mentioned prediction scenario that the bulk of our MRAPs will be sold to other countries and NGOs after we're done with them.

I think that's probably right.