I thought I remembered the Mustang making the list a couple of years ago.
EDIT: for best, not worst
I am not surprised... The mustang is very reliable for what it is.. another ford to look at for relability is the fusion, We have sold a ton of these things and have a bunch of them in our rental fleet and have not had any issues with them..
In two years that the fusion has been out i can count the amount of cars that came into my dealer for non maintence work on one hand...
one of them was mine ( creaking noise from passenger seat) and another one had a module problem.. I am sure some other came in that I did not see or came in on my off days but thats still impressive
Only issues I have seen with the 2005+ mustang is SJB ( smart junction box) issues and some cars with a knocking noise in the right front
BTW our warranty work at my dealer are down 80+ percent since 2000 some of that is that ford is selling fewer cars and trucks but much of that is a big drop in warranty claims per unit.
two fords i would stay away or have checked out really well are...
1. Windstars... Stay AWAY far AWAY, many problems, the P/S pump and rack fail on just about all of them, electrical problems and the earlier models 95-98 had head gasket issue, transmission issues on 95-2001
2. 02-04 explorer... Rear wheel bearings fail often, rear springs break.. Also front wheel bearings fail quite a bit, transmission issues, rear axle seals, 4x4 control module issues.. really poor e-brake design that is prone to failure and expensive repairs. New explorers are fine but these three model years have had some problems..