Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to communicate effectively with your mechanic [title] Know your car. [step] You drive it, maybe you own it too. In any case, it's vital that you learn as much as possible as you can about this massive piece of machinery that you trust your life with.

Ending1: You may even discover a valuable knowledge about the engine, in which case this will put the car in good working order and be helpful to your mechanic. The more you are able to speak with your mechanic, the better equipped you'll be to get your car that it needs. Ending2: We cannot expect you to be able to do great work in this industry. If you intend to work for yourself, make an appointment with a specialist. Ending3: [substeps] Review the owner's manual of any car you own. Owner's manuals will typically provide a maintenance schedule for your vehicle, location of different parts and part numbers, the meaning of different buttons, and many other things you might have had questions about. Ending4: This includes getting driving skills in your car, of course. Your mechanic's knowledge and experience in vehicles will help you come to terms with what your engine can become.

Answer format: ending1/ending2/ending3/ending4