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I believe cylinder deactivation occurs in Eco mode, which would explain why I get very good highway gas mileage.

That’s a safety feature that manufacturers had to implement after the “unintended acceleration “ accidents a few years back.

The cost of the windshield also depends on the options of the vehicle. Auto wipers requires a different windshield, for example. Then there’s the calibration of the cameras for the AEB system.

A lot of modern cars will try to squeeze every ounce of performance out of their engines, especially if those engines are relatively small. One way of doing this is by constantly adjusting the engine timing. With higher octane gasoline, that adjustment can stay nearer the “performance” range...

It‘s not that the computer keep changing its mind about how many miles you have remaining, it’s that your MPG change, which changes your miles to empty. When you fill your tank your miles to empty is based on the current average MPG. As far as gallons remaining at zero: do you have a reference...

Source? I’d love to read that article. 😂

I’ve heard my rear cargo floor rattle a few times, and the center rear seatbelt rattle when the windows are down and air is moving it around, but other than that I’ve not heard anything else, IIRC. As far as electrical sounds after shutdown, this has been discussed before. The headlights have...

1) It would be cheaper and way easier to just buy a BS that has the larger engine. 2) The engine bay is rather cramped. I’m not sure where you’d put an extra turbo and it’s associated plumbing.

You can select different screens to view, but you can’t modify any of them.

I’m not sure this is true with most modern cars. In an effort to squeeze out as much performance as possible, I’m pretty sure that the engine ECU is constantly adjusting timing with the help of the knock sensor. If that’s true, then the ECU can figure out what octane it’s dealing with shortly...

The problem with higher altitudes is not a lack of oxygen, (which is what I think you meant) it’s that the atmospheric pressure is much lower. As a result the concentration of oxygen is lower. A turbo can overcome this by cramming more air into the engine, thus “concentrating” it again for you...

Better and worse are subjective terms. Different is more appropriate. Besides, at least some of this can be attributed to supply chain issues. Should Ford just stop building cars for now?

The auto start/ stop is dependent on a variety of things, like cabin temperature and AC settings, battery state, and electrical demand.

You asked for verification that a modern vehicle could get better MPG running on premium. You got it. Don’t be so picky😂

I purchased both of these items plus the window switch and radio trims and I’m really happy with them. They all fit perfectly and look great.

Yep. There are several threads devoted to gas mileage with a fair number of us getting very good gas mileage, especially on longer trips with average speeds below 70.

One of the articles also shows a 7.1% increase in fuel economy when using premium, which means a loss of fuel economy when using regular.

Here‘s two tests: https://www.sciencedirect.com/science/article/pii/S2352146516302629?ref=pdf_download&fr=RR-2&rr=71a71404be0881f3 https://newsroom.aaa.com/wp-content/uploads/2019/06/Premium-Fuel-Phase-II-Fact-Sheet-FINAL.pdf One shows an increase in energy consumption as octane decreases...

It‘s easy to exceed the Monroney label estimated MPG. It’s also very easy to do much worse. You see the people in the latter category everyday: racing from stop light to stop light, racing down the highway, engine idling away at long red lights or while eating lunch in their car with the AC on...

I’ll see what I’ve got. In the meantime, just because you are burning less fuel and making less power does not necessarily mean you are gaining MPG if the fuel is not being burned efficiently. This is why retarding the timing can hurt MPG.