Anne 
2001 Toyota Highlander SUV V6 2WD 4dr SUV (3.0L 6cyl 4A)
120K and going strong
 Bought used 12/03 w/27K miles; now just over 120,000, & though overdue a major check-up & first tune-up, I've had few problems.  Mileage still avgs. 20-21 mpg & might improve a bit once tuned.  Except for routine maint., have only  had to replace some sort of emissions sensor.  Ck engine light came on a few times at first, but once I realized it was always right after oil change, & they weren't reconnecting an air hose properly after ckg the air filter, I always warn them about it, & it hasn't happened since.  Htg&A/C intermittently switches over to opposite of what it's set on.  Turning temp. knob over & back resets it so haven't fixed since entire panel must be pulled - big $$$, I'm told