: In modern fuel-injected cars (post-2000), the classic "tuneup" is largely obsolete. Today, it mostly consists of replacing spark plugs every 60,000 to 150,000 miles [3]. Tips for Interacting with Shops
: Performing diagnostics to find the root of the problem [7]. Correction : Repairing or replacing the faulty parts [7]. Car Mechanic
: Never tell a mechanic you are "not in a rush"—this often pushes your car to the bottom of the priority list [8]. : In modern fuel-injected cars (post-2000), the classic
: Bringing your own parts can be controversial. Many shops refuse to install customer-supplied parts because they cannot offer a warranty on the labor, or they may charge a higher labor rate to make up for lost profit on parts markups [33]. Learning the Trade : In modern fuel-injected cars (post-2000)