I was looking at a 2004 4Runner today with the Nav unit for a very good price. However, it has about 100 miles on it. I test drove it and put about 5 of those miles on it. My only concern is that most of those miles are from being driven as a test drive. When I test drive a vehicle I am not worried about proper break-in and I'm sure most others aren't either. Should I worry about damage that could be done to an engine in 100 miles? I plan on getting a bumper to bumper 7yr/100K warranty on any vehicle I buy.
(I now have a three year old Acura TL with an engine being replaced at the dealers so I don't need any "extended warranties are not needed" notes :-) Fortunately I had an extended power train warranty or I'd be out a few grand - and the car was well cared for!)
Thanks for any quick advice.