This sounds bad..really bad. Feels I have to forget about Minis and keep on searching. It ain't easy to find a little smaller 4wd Suv/Crossover that's economical to own/use.. =/
trouble is like i said all car's are as long as they are broad, take vauxhall Opel Chrysler they do a suv 4x4 they use two engines 2.0cdti and 1.7 cdti both these engines through even brand fail worse than a mini does. ie 2.0 cdti always get crankshaft failures due to dpf filter blockage and the oil ring between the oil pump and cylinder block,
vw audi seat vag group cars they all do 4x4suv 2.0 diesels need new oil pumps every 50k and oil pump drive shafts fail on the ones with out balance shafts, add the endless injector and very expensive egr valves on them.. the fsi and tfi engines have same as mini timing chains. and the hadex 4x4 system do go faulty and are expensive also need special serivcing every 40k, the DFG gearboxes fail a lot so expensive to repair,
ford do a kuga its not bad in many ways but like ever car on the road some get issues all will get issues with time and mileage as all cars do,, all above dont even begin that every diesel car gets ie with emissions based problem is another thing no one can avoid except by not buying a diesel.
or buy something a year old have a warranty and avoid the maybe's that come with 70k plus cars or no your likely problems and budget in to the plan to replace some things
added point, if i were looking for a diesel suv any suv that has a timing chain mounted to rear or engine that is known to wear out where the maker has had over 10 years to fix this known weakness,, but for a lot of people dont give issues to well in to 100k mark but so many barely hit 80k , i personally stopped buying any bmw product with this design after buying a brand new 3 series diesel that never got to 70k that had 8k oil changes and was spoilt form day one, to have chain slip to find after head off the whole engine to be destroy'd. to have bmw tell me that as car was 3 months out of warranty its my problem,,, never again.
the petrol engines are ok not to expensive to replace the timing chain even cheaper if DIY the job £200 plus locking tool.
mercedes ml 320 very good suv diesel. honda crv and toyota rav 4, stay away for Nissan Qashqai it shares its engines with renault 2.0 1.5 dci engines see them with big failures a lot, the top 3 never seem to go wrong, all 4x4 stuff will need the normal stuff clutch and flywheels around 100k turbo 80-120k dpf filters 80k etc,