Once the viewing of the used car is complete, potential buyers should insist on a test drive and take sufficient time for it. Before starting the journey, however, it should be clarified how the vehicle is insured. In addition, the engine should be cold and not previously run to operating temperature. When the ignition is switched on, the relevant indicator lights in the cockpit should light up briefly and go out again when the engine is then started. Moreover, you must consider the trademark car wash when buying a used car. What do you prefer?