[wjy]

Edit: grammar

Some cars are really good at this. Some are not. It depends on so many factors, including the egghead quality.

I'm one of those firmware eggheads, btw.

As another example, when I fuel my car from emtpy to full, as soon as I turn the key, the fuel gauge ramps rapidly up to Full. In my wife's car, it finds its way to Full after a minute or so. I don't know, but I'm pretty sure the difference is the filtering algorithm employed. One egghead knew about Kalman filters or similar, and the other didn't.

It's the same with all the other software features in the car. Some had good eggheads on the time, and some didn't. I think it's impossible to buy a car that does every single thing "right", by any single person's definition.

[cuu508]

> the fuel gauge ramps rapidly up to Full

That's funny! Does it also fluctuate when you take sharp turns?

[wjy]

No, but that's just the point. It's smart enough to know that at key-on, it has very little information about the actual fuel level, so it allows the needle to move rapidly. As it continues to operate, it gradually (probably over a few seconds) filters the fuel level measurement more, so you don't get rapid fluctuations while driving.