Had 2 take my 2011 in for brakes, have 90,000 miles on it and the backs were replaced at 60,000. Told them 2 change the plugs as close enough 2 100K for me...Dealer charges $700 2 change all 16 plugs, 3.5 hours of labor just for that. Need rotors in the front too. My front tie's were shot and...