Hello Wendy
I have had mine for six years ,never missed a beat, chain tensioners need doing in early ones( should be done by Nissan at owners request not a general re- call) all prone to sudden engine failure when no.3 con rod flies through the block due to big ends and bolts failing. This does not happen on all of them, mine got to 91,000 when i had the bearings changed new clutch and assorted mods.The bearings were showing signs of uneven wear when removed.
Driving has been likened to a boat, with rear leaf springs its to be expected ,cornering can be fun though.:naughty
Before the nav i had a commercial terrano, great fun, the space in the back being marginly smaller than the navarra. If you want a large deck space go for the single cab.
Milage per gallon is what you make it driven hard and fast(tops at over 100mph) and you can expect 25. driven with the revs arond 2000 and 35-40 is possible. long runs up the motorway should average 35(70mph about 2500 revs)
As for prices look at Autotrader for some idea of current costs.
Hope this helps
Tony:thumb2