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Brakes, fuel pump, water pump, change a belt, change a tire, spark plugs, wheel bearings... They all require actual mechanical skill that is well within "fix" and doesn't require programming.Actually, some of the stuff in this makes some sense - like knowing how to fix your car. You need a computer, not an adjustable wrench and hammer, these days. . Of course, that's for FIXING the car. You should still know how to do an oil change, take care of a flat, replace bulbs, and (IMO) do brakes. For much beyond that, you need to be a specialist.