Why Android auto is reading my text messages in English when everything on my phone is set to french

Question

Hello everyone,
I'm french, I have a galaxy s10 in french, I use Android auto in french but when I receive a text message Mrs Google switch to English and try to read the name of the expeditor and the message in English even if it's in French.
It's hilarious but not very understandable.
When I receive text messages from telegram, everything is in French as wanted.
Did someone have this kind of issue? Some ideas
Thanks

Pawan - Android Auto Team · Accepted Answer

Since observing this issue, we have launched more holistic multilingual language support across a growing list of countries, and we look forward to expanding coverage for additional regions soon.
 
We are constantly working to make Google Assistant more universally accessible and to that end we want to thank you for this feedback.
 
To learn more please visit the Assistant help center. 
Hope this helps!
 
If you’re still experiencing the issue,  we recommend updating the Google app to the latest version.
 
You can also try:
 
Set your phone language:
Open your phone Settings > System > Languages & Inputs > Set your language
 
Note: Phone language settings location may differ depending on your device's manufacturer 
 
Set your Google Assistant voice language:
On your phone > Open Google app
Select the bottom three dot tab More > Settings > Voice > Languages
Set your primary language preference (Remove additional language (e.g. English) entries if they are enabled)

Paul - GStore Email Team · Accepted Answer

Hi everyone,
Thanks for all the reports on this issue. 
Assistant in Android Auto currently supports a limited number of countries which are listed on the Android Auto official website. We appreciate your patience as we work to support more countries in the future.
For those experiencing this issue in supported countries, please refer to this article in the Google Assistant Help Center, how to change the language of your Google Assistant’s voice.
Important: If your Google Assistant reads text messages in the wrong language, remove English as a secondary language. Then change your Google Assistant’s voice language to match your Google Assistant’s language.