I've been reading some of the threads and have noticed that some of the 2.5L had headgasket problems. Were those troubles limited for the most part to certain years, or do most of the 2.5L seem to have this trouble?

96-99 have had the most frequent problems. Make sure you have the coolant system bleed properly, if air is in the system, the engine will overheat and significantly increase the chance of HG failure.

 

Most seem to go out about 70-120K range. Not good, but not to bad for that many miles. I had a Dodge 2.5 4cyc that I put gaskets in every 80K. Sold it at 285K and it was still going strong.

 

Its something you should watch for, if buying used ensure you adjust the price and check for current failure. Many times the car will run fine in town or on short trips. When run long and hard they overheat.