[v8volvo]

Congrats on the new rig!

25 mpg sounds about right, assuming you do mostly in-town driving. Mine have always averaged around 27 overall, with a mix of city and highway... they can do better than 30 with highway use at moderate speeds. Is yours an automatic or stick?

As you've probably already seen from looking around here a bit, these are good engines and last a long time providing good performance and economy, but there are a few key things to keep on top of to keep them out of trouble: they require good synthetic oil, the timing belts need to be replaced correctly and on schedule, and cooling system upkeep is important since they do not tolerate overheating. Located where you are in AZ, cooling system performance may be tested more than usual so a thorough check-up on those parts may be a good starting point, especially before the summer months start if you're planning to drive it much then.

We will look forward to hearing more as you get to know it better! Welcome to the forum.