Yes. Waze should have the speed limit and speedometer separated from each other (in the app and in carplay) and hopefully they will see everyone's comments wanting this and reconsider their decision not to separate them. They have been told about it many times.

The Ford sync comments are about the incorrect speed which is a separate issue.
And yes, if Waze allowed the speed limit to be shown without the speedometer that would be better for cars that are giving the incorrect speed to carplay.
Waze need to fix that app issue. Ford issue the firmware fix for sync.

Unfortunately that's a Mercedes Benz system issue.
Waze gets the same speed information from the Carplay API as every other app does - so it is not directly a Waze issue to resolve. And unfortunately the apple Carplay api does not pass vehicle information to the Waze app so it does not know what vehicle, model or system information the car has so as to perhaps reference a database of systems with issues to make calculated corrections for the speed. Waze may be looking for a way to see if they can come up with a solution of correcting speed values if it in some other means of sensing the value passed by Carplay is wrong. Don't think the Carplay API allows access to the phone GPS speed when connected.
iOS 13 might relax the apple restrictions and may help - too early to know at this stage.

Advise contacting MB directly as see if you can get on to someone who will listen on the issue and also search the MB user forums and see if other people with same cars and systems see the same issue and try gather data on specifics that MB could direct a fix to. This was done with Ford and they have a working update to fix it and is pending public release.

Another reason Waze should disassociate the speed limit and speedometer to be separate features.

Mvan231 wrote:I just had a thought, with the incorrect speedometer display issue using CarPlay, will segment speed data be artificially higher?

Yes but the speed is averaged and it’s a small distance and will be negligible.
What car do you have?
If ford, find a link to v3.0.19119 sync 3 update and install it. Fixes the incorrect speed sync sends to CarPlay.

Mvan231 wrote:Is there a way to submit map issue reports while driving with CarPlay? I don't see it as an option.

No.

michael-hull wrote:I don’t think this speed difference is a Waze problem, but rather iOS/CarPlay problem. All GPS speeds are off within seconds of plugging my iPhone X into my 2018 F150.

It’s a sync system bug. Read through the last few pages and you’ll see the discussion and info on it.
Find and install v3.0.19119 unofficial sync update and it fixes it

Swearingen wrote:I have Cadillac Escalade ... Waze works great as long as I am plugged in ... but if I don’t have a cord or my husband is plugged in.... I can’t use Waze... seems to not connect to GPS... reading that Apple CarPlay “prioritizes” GPS... but in my husbands vehicles which both have Apple CarPlay we don’t have the same issue. PLEASE HELP! I’ve been a Waze user for years.... so frustrating

Sounds like it's a Cadillac issue.
Try with other navigation apps to see if it shows the same behavior.
The car may have one dedicated USB port that is for Carplay.
I would only connect one phone to the car system USB plug and use a USB power adapter for another phone

kscholey1962 wrote:In the UK at least, there is a new update available from the Ford Sync3 Customer Download website.
It increases the build from 18025 to 19149 and fixes the speed display problems.

I did it yesterday.

All Good

H

Good info.
So looks like Ford has officially released the update to fix the incorrect speed. v3.0.19149

nofazer wrote:

kscholey1962 wrote:In the UK at least, there is a new update available from the Ford Sync3 Customer Download website.
It increases the build from 18025 to 19149 and fixes the speed display problems.

I did it yesterday.

All Good

H

Could you share the file name of the update you downloaded? It was probably a .zip file.

Search for
SYNC3_2807667713_Update.zip

V3.0.19149 is the latest official one.
Get a link for that or what until the ford owner site gives you the JR3T-14G381-AR version

They are limitations all set by Apple