2004 Jetta - Anybody know what's going on?
 

So, my car has been having some problems. The first problem first started when I was in bumper to bumper traffic. My battery light randomly came on, and I couldn't accelerate. If you restart it right after this happened, the car won't start. However, if you wait a couple minutes, the car starts and runs. For awhile, when stopped, I would just keep my RPM's up, and nothing seemed to happen.
My mechanic said it's because I was using regular gas, which I'm an idiot for doing so. He thought the problem was the gas, but I knew it was too good to be true... So, I was stopped at a stop light, and wasn't keeping my RPM up, and the battery light came on again. However, it did something it hasn't done before. When I was driving, around 40 MPH, my RPM dropped completely to 0, the battery light came on, and I couldn't go anywhere.
Do you guys have any idea what could be the problem?

Welcome to the forum. Attachment 2362

Which engine petrol or diesel?

You need to get your motor scanned (preferably with VAG-COM\VCDS) for any error codes logged in the ecu and post them, that will save a lot of guessing.

https://volkswagenforum.com/forum/ne...gnature-34185/