I now pretty much limit my work on vehicles to fluids, wiper blades, rotating tires and brake work. Fortunately most vehicles rarely need a repair in the first 100k miles. But when they hit 120-150k I expect a cash infusion of $3-5k is almost guaranteed. If I was smart I'd sell cars once they hit 90k and buy a new one.
If you really want to hate automotive engineers, work on the engine or transmission of a compact car with a transverse mounted engine. You'd swear the engineering department sported horns and tails.
