I have a 2010 MN with 180k on the dial. Heres what goes wrong with them,
Manifolds carbon up every 80k approx
Sychros on gearboxes wear out
Suction control valves fail
Rear springs squeak and sag
Also had MAF senser replaced 2x, cd player x1, 1x turbo at 80k, steering rack leaked.
Steering colums are replaced on some, seats are terrible, turbo lag under 2000rpm.
Servicing is very expensive av $450 minor, $800 mid, up to $1500 major. Valve clearances need to be checked every 30,000km ($400 extra) timing belts at 100k.
Positives,
Not bad off road
Good value for money
Best warranty in the class
Good mid rang power
clutches last labout 140k
Summary, not bad, not good, cheap to buy and good warranty cover.