Car repairs can be expensive for a few reasons. First, mechanics often have to replace parts that are usually considered standard wear and tear on vehicles over time. Second, car manufacturers generally put more money into designing complex engines than they do into ensuring that the wiring or other components in those engines are properly sealed and kept working correctly. Finally, many times when something goes wrong with a car, it requires multiple visits from the mechanic in order to figure out what’s causing the problem – all of which adds up quickly!