In your case I don’t really know. If you didn’t have an air filter, I would ask myself what else could be wrong with the car. It might be best to have someone take a look at it in person to check over the entire engine.

I have the same problem with my 2018Hyundai Elantra 2.0 Liter. It stalls while I am in motion usually around 20 to 30 mph. It has not happened well on the highway thankfully. I recently discovered the car didn’t have an air filter. I don’t know how long this had been missing. I put in a new air filter and that’s when the problem started shortly after that. And some say maybe it’s the MAF but I saw another comment from someone who said the car says shift to park while it’s in park and I have that issue as well occasionally. These two issues because by the same problem?

Does the car stall while driving or while idling?

What’s the year, make, and model? Is this a known problem on that particular car? Sometimes forums can be really helpful for elusive issues like these.

Have you scanned for codes? Stalling while driving could be caused by a number of things, so you’ll have to do a bit of troubleshooting to help narrow it down.