And "low mileage" is a moving target. Us old people remember a time when a vehicle making it to 100,000 miles, even WITH repairs, was kind of rare. Youngsters these days whine and moan if they have to get new sparkplugs at 150,000 miles. Vehicle reliability and longevity is astronomical now compared to the 1970's. Take a look at used cars on Hawai'i; many with 250k+ miles for sale. It still baffles me how so many miles can be driven there, it's as if people live in Hilo and drive all the way to work and back in Kona every day, taking the long route.
Regardless, the chances of a mechanical breakdown or failure are pretty slim these day, but the chances of an electrical/sensor failure are very high.
It would be great if there was a vehicle drive system that didn't have so many sensors monitoring fuel/oil/coolant pressure, spark ignition, exhaust composition, air intake vs exhaust and horsepower ratios, cylinder intake/exhaust pressures and timing, etc etc