I really care for my vehicles with fluids maintenance, alignments, tire rotations, and inside and out cleanings, but I've NEVER gotten more than 200,000 miles out of any brand. I hope one day to make it to 201,000 miles! Even back in the 80s when I was a teenager, I greatly admired people in our community who had vehicles with 250,000+ miles (I'm thinking of a few examples, but a couple of old Mercedes-Benz cars come to mind that I was familiar with).
Our 1998 Tacoma 4x4 3.4 V6 looked great but was mechanically worn out at 200,000 miles: burned oil badly, front end wore tires like a maniac despite several alignments, transmission was making a whine, and it had developed an alarming knock or tick in the engine during the first few minutes of operation when it was cold. I never even took that truck into the mud.
Our 1980 Audi 5000S made it to about 110,000 before the 5-cylinder engine overheated and blew. (We bought the car because we had heard so much about "legendary German engineering".)
What make and model of car with normal maintenance will go to 300,000 miles? I drive mostly highway miles; I set the cruise on 61 mph and drive 64 miles round trip five days per week.