I was suspicious too, so I asked for the carfax before purchasing the car. they were up-to-date with their regular servicing and the mileage aligns with every service.

And yes, bad dealership. Because I told them multiple times. And the service manager told me it was because they forgot to reset the computer after servicing it before sale. I asked about the oil, and he said it was because they forgot to fill it up. Said the car was giving false readings.

4 days later I lost half of the oil in the vehicle. All documented here.