Kuna vigezo vya kununua gari used kama mileage; year of first registration; number of owners; number of drivers; condition of engine and body - inside and outside; use - for tour, pulling cart, towing frequently; serviced regularly; parts change when its time is due. Testing is very important if you buy it within your country, region, district. Fuel economy inategemea ukanyagaji wa kichapusha mwendo, air cleaner, matairi, wheel alignment, mizigo uliyobeba, fuel filter, plugs, plug wires, injectors; if automatic, does ATF smell burning, syrup like colour? Does it jerk softly when engaged - forward and backward? Do you hear gear change - 2 to 3 and 4/5 to 3/4 at 30/40km per hour n.k.