Just bought a 4Runner, became suspicious as I was cleaning the interior, numerous missing screws for the dash, so I ran a carfax report and found there were inconsistencies with the odometer- likely was turned back, but the question is, how much? I figured it could be as much as 80k miles- Is there a way to tell true mileage, maybe hooked up to toyota's service computer?

 

Nah, theres nothing THAT sophisticated in a 93... As for the missing screws in the dash, it could just be from someone adding aftermarket stuff, like a tow package, or replacing their Headunit. Usually if an odometre is rolled back (the old way, with a drill) the numbers won't line up perfectly, and will be slightly skewed.

 

Reason I'm suspicious is, I bought it with 127,+++ miles. In 2003 it had 126K miles, was continuously registered for 5 years, then showed up in a different state, new title with 105, +++ miles- hard to figure a DMV clerk would make that kind of error. The numbers line up fine- the door frame was missing the tag for the headgasket replacement service bulletin, but Toyota confirmed it was done in 97. All other tags, oil change slips etc were not found.

 

as common and easy as it is to just replace the entire cluster with a lower mileage cluster its a possibility that someone swapped it out somewhere along the line