So for 2014, I spent $1,705.33 on maintenance parts and $1,375.95 on off road parts on a $2,000 initial purchase.
For 2015, it was an odd year and so my post will be much shorter than 2014. Here in North Texas we had record rainfall. I don't have the total but by end of November it was almost 54" of rain for the year and it rained a few more times. So really the only off roading/use of the Bronco was Q1 of the year. When the local trails get muddy they become very very difficult to manage and becomes a day of "vehicle recovery" instead of wheeling.
Expenses included:
$1,000 for new 35" tires
$20 for new power steering pump hose.
$750 for custom rear bumper and rock rails from JD Offroad.
Total: $1,720.
The tires were a necessity because my old set were destroyed and I had to buy/borrow some used ones just to make it home after one of the outings.
The a head gasket blew so I purchased that but that will be part of the 2016 costs plus the oil and filter I bought to change the oil but won't do until the head gasket is fixed.
In terms of reliability, no breakdowns due to all the 2014 maintenance done. I still have elective things like fixing the gauges and cosmetic changes to do.
I was actually surprised by the 2015 numbers considering I didn't really get to do that much with it this year but up until about March there was no indication of the record rain.