Should i buy a 2019 AWD rav4 with 27,000 miles on it?

Hello, as long as proper maintenance has been performed in a timely manner, there should be no issue with "a lot of miles" on a vehicle in a short period of time. No one knows how long the vehicle will be reliable, but as long as all recommended and required maintenance has been performed, I'd guess that it would operate for some time to come once repaired.