Check for a tamper dot next to the odometer reading. It gets illuminated when the mileage has been tampered with. Check if the car was serviced on time. On the service history check for items that were were replaced prematurely that would suggest the car was driven hard like brake pads, disks, clutch etc. Although this is unlikely on a 320i. Check for abnormal smoke coming from the exhaust. Check if the wear on the interior is indicative of the mileage and the obvious one, check the alignment of body panels or signs of respray that would suggest accident damage. Good luck:thumbs: