 Like any other car, if you take care of the little things, the Passat will be reliable for as long as you wish to drive it.  I have nearly 300,000 miles on mine, and other than VW's self destructing heater core, it's never, ever left me stranded.  Its fuel economy is okay on the highway (27-30), but what makes this car shine is it's fun-to-drive factor.  It's pretty nimble for it's size, and offers very predictable but sporty handling.  It has enough room to move a small office, carry a 9 x 12 rug, or a Christmas tree (inside, trunk closed), and offers rear seat passengers enough leg-room to cross their legs withough kicking the driver!  this is an all around good, fun, value.