I saw that on some of the GT cars, it is possible to display RPM and speed on the main infotainment display. The display shows large analog style gauges. I've been playing around with the infotainment system of my 2019 GTR, and I can't seem to find it.

Go to vehicle settings, under dynamic select there is something called vehicle data and engine data, engine data is what you are looking for. Vehicle data shows your current drive program, brake threshold, accelerator threshold, with adaptive damper is active and the steering angle.

Correction: You don't go in the vehicle settings menu, dynamic select is beside vehicle settings.

That worked! Thanks so much. I am curious to see the maximum horsepower number on the dial on the GTR. Mine shows 700 which is way more than the advertised 577.

My pleasure to help!

Well, that 700 might be used to just fill the circle, see if launch control and/or flooring it gets you to what number but despite that, that gauge is not fully accurate in representing the horsepower, it does give you an idea in the ballpark though. Full full accuracy you need to place the vehicle on a dyno.

I am hoping forum member superswiss chimes in to explain that digital horsepower gauge better.

I did a pull, and the gauge and digital number went to 600. I guess the extra 100hp on the dial is left for the tunners

Haha, that is one way to look at it : )

Forum member superswiss didn't chime in but this was his post back then which I was looking for, finally found it: https://mbworld.org/forums/c63-c63s-...ml#post8779681

Here is another thread on this:
https://mbworld.org/forums/w213-amg/...ndicators.html