I have a 2018 AMG C63s. I can't find a feature which I hope is included with the dash display features that Mercedes provides. On my previous Porsche the posted speed limit was displayed in the digital dash information. I can't find this feature on my Mercedes. How do I turn this on? I hope its there as its a very useful feature. I'm having to use my Waze phone app to see this information.

In my 2018 it shows in the head up display. I believe it also shows in the cluster if you have cruise or distronic on. However don't quote me on last part.

In my heads-up display (tachometer display) I only see the speed of my car not the posted speed limit. Is the posted speed limit visibility turned on/off somewhere?

I'm talking about the head up display in the windshield.

Yes the heads-up display on the windshield. I have the tach displayed as a bar graph with my gear selection and current speed, but no posted speed limit icon showing up in the heads-up diplay. There is no posted speed limit showing up anywhere, neither in the heads-up display nor in the dash info display area between the gauges.

Below is the info from the owner's manual. You have to be on the right screen, but also your car needs the full COMAND system (built-in navigation). In the 2018, the speed limit display is map based and comes from the navigation database. As described in the owner's manual, it's not recognizing the actual speed limit signs on the side of the road with a camera. Camera based speed limit sign recognition is only available in 2019+ models.

Camera based speed recognition and as available on my 2017. Comand / DA based speed was added in 2019

Okay went to my car and took a pic. From the menu in the middle of the instrument cluster: Settings > Head-up Display > Display Content - select the middle one. Otherwise the speed limit will not display. Most likely you have the top selected by your description which may be the default.

I don't have as many choices as you show. Only 1) tach display without posted speed limit, 2) current speed, and finally 3) current speed with direction. Maybe there is something closed elsewhere that when open will reveal the more choices as you've shown. Maybe there is some feature (option) that you have that I don't. I have navigation on my car. I can't figure out why I don't see the options you have. Thanks for the time and effort you gave to get back to me with pics.

Mine is a 2018 C 63WS - USA car. Here's my spec. Let's see if we can figure this out. Isn't making any sense to me.

I'm guessing it is part of the Driver Assist pkg, which OP most likely doesn't have.

Now that you mention it I think you're right.

Speed Limit Display is part of the Driver Assist Package even in the 2019 models I believe. Also COMAND Multimedia/Nav system is a pre-requisite for ordering the Driver Assist Package in the 2019 IIRC.

In the 2019 (not sure in the pre-FLs), there is still a camera on the windshield behind the rearview mirror which I believe is used for certain safety features but does not help with speed limit recognition (I do not have Driver Assist package).

It's not quite clear which part of speed limit assist is part of the Driver Assist Pkg with the 2019. What is part of it for sure is what MB calls Active Speed Limit Assist, which is the feature that makes DISTRONIC automatically adopt the current speed limit and you can also press RES instead of SET to automatically set DISTRONIC to the current speed limit. The speed limit display in the 2019 is for sure using the cameras, at least if you have the Driver Assist Pkg. It worked very well while I was in Europe, recognizing the temporarily lowered speed limits in construction zones as well as the electronic speed limit signs in Germany that set the speed limit based on traffic and time of day. I do find it a lot more useful in Europe, because the speed limits change constantly and enforcement is taken much more seriously with speed cameras everywhere. It helped me manage to get only one speeding ticket while I was there and it was only 20 Euros. In the USA the speed limits don't change much, so I'm not quite seeing the value of displaying the current speed limit. You kinda know what it is. It's not lowered in construction zones, and we don't have systems that set speed limits based on traffic and time of day. Enforcement is also much more relaxed in most of the USA. It's not uncommon for traffic to flow 10 to 20 over, so if you are actually driving the speed limit you end up being an obstacle.

This is actually present in few parts of the US already (in few big cities, eg. few freeways and bridges near the Seattle area). I however agree that enforcement in the US is not as strict compared to Europe. It varies based on State and city/region as well. I've seen strict cops in Portland and Northern Oregon for example who will give you a ticket for <5 miles over the limit (eg. try going southbound on I-5 to cross the Washington-Oregon border when you enter Portland, OR).

No 997 Driver Assistance Package on my build list (bought the car used.) This must be the factor. Bummer. At least I now know that I don't have to look for a feature that isn't turned on. I guess Waze will be my speed limit info. Thanks for all your help guys.

Amazing that you have to buy a $2000 package to include the speed limit info, something that comes standard with most navigation equipped cars. At least I can get the speed limit information running Waze for free.

Not sure if this helps but mine is a Canadian 2017 with driver assist, full command and HUD. I don't get any speed limit info......

This is true of any German luxury/sports car. Lane assist, radar guided cruise control, safety aids, etc. are standard on <$25k cars from Toyota, Nissan, Honda, etc. these days but is part of an addon package in the German cars in the luxury/sport segment.

May be it was not supported for the Canada region till a later year?