A small, but not insignificant, boost has come from decreasing parasitic draw. EPS and EWP means not running pumps off the drive belt, and intelligent charging means alternators can declutch. It might only be 20-50hp, but it adds up.

Now whether that changes the “marketing” horsepower of a car, or just the “butt dyno” and whp ratings, I’m not sure.

Huh, you learn something new everyday. I had no idea BMW switched to green coolant.

Anyways, I found this on Tischer’s product page for the green stuff. If you can make out the German symbology, have at it. It looks like if you got “G48” and mixed it with the “HT12”, that’s ok. No clue if G48 is like a standard (e.g. LL01 for oil), or if it’s a BMW-specific term/number.

I’ve owned multiple 3 series over the years (E30, 4x E46, F30), and considered the G20. I bought the F30 to replace an E46 ZHP, so that’s the bar for handling and feedback I was trying to measure up to. It took ditching the runflats for PS4S, using the rear subframe stiffening brace from the 4 convertible, G80 front control arms, and Ohlins R&T coilovers to get there. Multiple test drives of the G20 left me wanting. I bought a Macan GTS instead (and got rid of it pretty quickly). I now daily drive an F150 and have an E30 for when I actually want to know what driving feels like. I don’t think there exists a modern car (BMW or not) that is an “Ultimate Driving Machine”.