Labor times are for new cars at flat rate dealerships, a lot of them are not realistic. Dealers make a pile of money off brake jobs, shocks, and other "gravy" repairs where it takes less time than the book says. They also lose time on the hard stuff that nobody in the place does on a routine basis like wire harness repairs. The timing also expects the mechanic to have the right tools all at hand, the right parts all ready to go, and the car is expected to be new, clean, and rust free. Your mileage may vary.