Is it really necessary to replace the spark plugs at 30k miles on my 2009 2.5i? I have heard that most cars come equipped with platinum plugs from factory, which don't require servicing until 100k miles. Is the maintenance booklet a snake oil tactic to squeeze more money out of the customer?
I actually went to a mechanic today to inquire about cost of replacement, the receptionist stepped away to ask the mechanic. She comes back and says $60. Is this price too good to be true? I thought the cost would be a lot more since the plugs are in an awkward spot