Pensioner’s car Ford Ka

Hi people! I might want to buy a used ford ka 97 bj, but only with 8.543km of running power. he would cost 3,900 euro. the car is well maintained and looks almost new from the inside and outside despite the age. also during the test drive the car (coupling, gearbox,…) made a good impression. now my question: how can you recognize from the data is this really typical renter vehicle. the dealer thought the man would be only from home to shopping and again but I’m thinking about the low running power. how do you see this? can you still buy a car like this? thank you for your answer.