Very true, you still have to use the same age-old methods of troubleshooting. Modern cars just give you timely access to a lot of information you used to need a chest of various measurement tools to get. The engine (long blocks) themselves haven't changed significantly, it's the controls which are different. The same valve spring compressor you use on a 1955 Chevy will work on a 2018 ZL1. Honestly, I'd rather do plugs on the '17 - because I'm not going to be doing them for probably 10 years. In the case of the little 4 bangers, those are disposable cars. If you get to the point you need to put in a new timing belt, trade it in and let the dealer mess with it lol. In all seriousness, if I did need to do it, modern assembly methods have made it very fast and easy to drop the whole front subassembly out of the car. Shade-trees have accustomed themselves to trying to fit under the hood because that's how we've always done it. I guarantee, once you see how easy it is to lift the car off the subframe, and yes you can do it in your garage, it's an eye opening experience. You only pay through the nose if you need to pay someone else to do it. On average, each repair MIGHT be more expensive, but over time you're spending less because you're repairing less. Points, condensers, distributor cap and rotor, etc. don't exist any more. Those maintenance items and their costs are gone. Even the plugs last 100k. Carbs don't exist, eliminating another maintenance item. If you have to change a fuel injector in today's world, something went way wrong. If you do need to change one, they're no more difficult to swap out than a carb and there's no tuning needed afterwards. If you have any questions, I know pretty much every nut and bolt in that car.