Did you know that you can save money in bundling your auto parts replacements? For instance, when replacing the head gasket on an engine, a mechanic typically replaces other items, such as a timing chain. Considering how much labor is involved in taking apart and reassembling an engine, this makes sense.
You can do the same for other simpler replacements, like your alternator or starter. If your service technician has to remove numerous parts to get at the one causing a problem, it may make sense to replace worn items such as belts and hoses, too. Talk over the possibilities with the mechanic and negotiate a fair price for the labor before you start the repairs.