Most of what you would have heard about freelander problems would have been of engine problems in the models preceeding the TD4 engine.
By all accounts the TD4 equiped vehicles are problem free. The V6 is more popular, but eats fuel. I'd opt for the TD4. In fact, my fiancee has been eyeing off one for a while now, so we might end up with another Land Rover eventually 8)
1994 Discovery TDi
2004 Discovery 2 TD5
2010 Discovery 4 TDV6
1961, Series 2 Ambulance. 108-098 - Eden
Registry of Ex Military Land Rovers Mem. 129
Defence Transport Heritage Tasmania Member
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