70k seems about right, had a customer bring in a Honda Accord Hybrid with 78k on it that had a missfire. Well it was a variable displacement motor and had rockers that would disengage and keep the valves closed on half the cylinders. The oil had gotten so nasty that a couple of those rockers had stuck. Popped them back loose, cleaned them up, new filter and 75% ATF 25% oil and ran it for a while. Another new filter, 50/50 mix and took the car out and beat on it it. Brought it in again and put another filter and all engine oil in, everything seemed happy again.
We looked up the history on the car, and he brought it in for the complimentary first service at 4k, and then never came back. When the service manager asked him about it, he said "well every other damn car I've owned had a light that came on when you had to put oil in it!" The car didn't burn oil, so it never ran low enough to starve and turn the oil light on. I shudder to think of the line of cars that he had behind him which had been repeatedly run out of oil. Now there was a maintenance minder light shaped like a wrench that had probably been on for the last 65k miles, so he had no excuse on that front.
I don't understand why someone would spend $35k on a car and then just neglect it. That's a lot of money to just throw away.