I have a 2006 Highlander 4 cyl and only 124 thousand miles.....never had a problem with it.....23-25 mpg. Have a 2005 Tundra with the V6 and it has 184 thousand. It has the motor that some have a million miles on. Never had a problem with it. I drive it to beach several times a year surf fishing and gets around 18 mpg. Toyota is a great vehicle and would buy another in future.