At one time, I had all Kitchen Aid appliances (washer, dryer, fridge, gas cook top, dishwasher, wall oven) and the quality of the washer was terrible, the oven frequently gave me problems, the rest were fine. Kitchen Aid (unbeknownst to me at the time of purchase is just a Whirlpool appliance. In fact, Whirlpool owns practically every North American appliance brand out there - Kitchen Aid, Maytag, Amana, Inglis, I believe Jenn Air, and a host of others and make various white appliances. They are all the same guts.
I did not have an extended warranty.
It cost me.
With the washer, I thought I'd try to fix it myself but I could not even figure out how to get the back off of it! (I was going from memory as to how my dad used to fix our old GE when I was a kid). I called Sears as that was where I purchased it and when the guy came out to fix it I watched him and lo and behold the back was the one thing that didn't come apart. The head rotated down, 2 long screws, 2 clips and the front and sides just fall away. Amazing. He fixed the issue for a couple of hundred bucks and I made sure I watched that too because I knew it would go again and sure enough it did. Every couple of years in fact.
I ended up replacing everything due to renovating.
I'm sold on Miele now. Have been for years. German made. If you wait for it, Miele will have one promotion or another from time to time and one promotion is a free 5 year warranty. So I'm good with that.
If nothing else, if you are in the market for a dishwasher, Miele is the pinnacle of dishwasher technology and worth every dime. Nothing comes close.