German electronics don't stand out for their user friendliness, neither Italian electronics (when they work). I still haven't figured out the trip computer in the Alfa and frankly, I can't be bothered.
That's the biggest advantage of cars from the late 80s and early 90s; no electronics. At least, no abundance of electronics that only can go wrong at some point in a not so distant future. Who, with a right mind, would put a regular desktop or server computer through the stuff they have to go to when they're in a car? Minus 20 C, then 4 weeks of 95% humidity and a month later plus 40C in the sun. That's not even counting the miles and miles of bad road making even solid state disks lose their parts at some point.
Yet, people are still surprised when one of these €1500 black boxes crap out and the only remedy to get the car going again is to outright replace them. It's a real pity, but IMHO cars sold these days will not make it past 8-10 years. They're done after that time.
The R series, I had to look it up on Wikipedia as I had completely forgotten about it. I remember seeing one or two in the past few years, but Mercedes is not able to sell them over here.
They are trying again though.