6. The Odometer Is Broken
Look at that, you finally found a 2005 Acura RSX Type-S that's got less than 50,000 miles on it. Just one thing: The 48,876 miles are actually 189,298 miles. Now, an Acura might be a bad example, because they last forever, but you catch our drift. Broken odometers allow people to get away with selling vehicles that are more worn down than you know.