I purchased WagonR Lxi in Nov 2007 and still my car is having no major issues earlier. Long journey is comfortable and hassle free & gives a very good milage with A/C.
I think hardy body , Alloy wheels, Airbags, GPS enabled touch screen panel on dashboard with tyre pressure monitoring facility. EBD,ABS,head rest on back seats Reverse parking sensor & more ground clearance are the most demanding issues.