Audi Q4 e-tron stopping at 80%, is it actually a problem?

You come back to the car in the morning, expecting 100%, and the display reads 80%. The cable is still connected, no error is showing, but charging clearly stopped earlier than planned. Before you assume something is broken: in roughly nine cases out of ten, this is the car doing exactly what it was told.

First, check the limit

Audi, like every other modern EV manufacturer, lets you cap charging at 80% for daily use. It is genuinely good for the battery: keeping a lithium-ion pack between roughly 20% and 80% reduces cell stress and slows long-term capacity loss. The same logic is used in your phone and laptop.

The 80% cap can be set in three places, and any of them can quietly override the others:

• The MMI in the car (Charging > Target state of charge).
• The My Audi app on your phone.
• A saved location profile tied to your home address. This one trips people up: the car can apply a different limit at home than it does at public chargers.

Try this first. Open the My Audi app, look at the charging settings, and confirm both the global target and any location-based profile are set to 100% (or whatever you actually want before a longer trip).

When it is not the limit

If you have already set everything to 100% and the car still parks itself at 80%, two things to investigate:

1. A stuck profile after an app update. Some owners have reported that My Audi enables a default 80% limit after an update, even when the previous setting was higher. Update the app to the latest version, or uninstall and reinstall it, then re-set the target.
2. A duplicate or corrupted charging profile. Delete all saved charging profiles from the app, run one full immediate charge with no schedule active, and then rebuild only the profiles you actually need.

While you are at it, make sure the cable itself is not part of the picture. A worn portable cable can cause the car to end the session early and report it as a completed charge. A clean handshake from a healthy Voldt® Audi Q4 e-tron Type 2 charging cable removes that variable.

A quick technical note

The Q4 e-tron charges up to 11 kW AC three-phase, except for the 35 e-tron which is limited to 7.2 kW. On DC it can pull up to 175 kW depending on variant. None of these maximums change the 80% behaviour: the cap is set in the BMS based on what you (or the app) ask for, not by the charger.

Bottom line

Nine times out of ten, the car stopped at 80% because you, or the app, told it to. Check every settings menu, including location-based profiles, before assuming a fault.