Do most people really spend $595 on service without any idea what's included?
I don't know about most people, but I certainly have not, and never will. As a matter of good practice, I have no plans to bring any of our vehicles, new or otherwise, into a dealer for anything. And that includes my 2014 VW turbocharged diesel Passat.
I do not have any recollection of ever bringing a car into a dealership for an inspection (God forbid), scheduled maintenance, or a repair. All maintenance and repairs are done by me, and if I can't do it, then we have a trusted independent shop that gets the work.
For those of you that go to those dealer service department rip offs, open your owner's manual and find the maintenance schedule and read it. No where on it does it recommend fuel injector cleaning (hey guys, gasoline is a solvent!). Most, if not all, coolant systems contain fluid that do not require changing for at least 100,000 miles (or more). Auto transmission service? Usually not for 100,000 or more miles. Etc, etc.
Do have your timing belt changed on time, though (if your engine has one). Preferentially at an independent shop
that will change ALL the rotating parts in the belt path. (Dealer mech typically just changes the fabric belt to save time and make him more dollars). Oh, timing belts usually don't break on their own...it's usually a water pump or idler pulley that fails and takes the belt out. And that usually happens if you don't change those rotating parts out during the first belt change interval.
(My pet peeve) - Dealer oil changes:
If you folks with turbo charged engines let the "wash jockeys" at the dealership change your oil (mechanics are usually too busy on "high dollar" work to change oil), you better hope the correct spec oil is put in or you may be buying a turbo very soon, and they are not cheap. Turbocharger shafts spin pretty fast and get real hot. 100% synthetic oil is generally spec'd for the oil change since the turbo shaft is lubed through a line from the oil pump system. Dino oil can't tolerate the heat and burns off, and the shaft will fail. All car manufacturers have a written spec for the oil manufacturer to meet and that is also spelled out in your owners manual.
Also, stay away from "quickee" oil change shops. Their techs are less qualified than the dealer wash jockeys.