We have a 2007 Lincoln MKX has 80, 000 miles as of July 3 2010 no problems, until a trip to Venice Florida, in Mobile Alabama we got into stop an go traffic for 1 1/2 hrs. gone 39 miles after a hour gone by moving forward there was a strong shift, almost a jerk, though it was the universty joints, are the tranmission, another 15 miles it happen again then 5 miles again, at our hotel there was a Lincoln Dealer just across the street, took it in SAT. morning they work me in, found out it was the computer chip that was causing the problem and it could be up graded at a cost to me of $59.90 I do not think i should of paid for this but they said it was not under any kind of warranty, this car was sold under a 5 yr. 70, 000 mile warranty, but a design problems was not cover under warranty, we just had to paid for that, FORD like most Dealer once you sign on the line they got your money, this suv cost$40, 000, but beware of the design problems you may have to paid for Robert Perkins, Try getting any help out of FORD's 1 800 5214140 ask for Nancy LOL