Fiat 500 gearbox failure

I have a 2015 Fiat Turbo (automatic) with the same issue. 66,888 miles. It happened 6/30/18, the red gearbox, hill start, service engine lights came on. Car ran horrible. Didn’t use car over the weekend. Tow driver started car and no lights came on. Dealer has had car since July 2nd. Transmission tech has looked at car, engine tech has to look at car. No diagnosis as of yet. Will keep you updated.

Update: No issues with the transmission. All 4 spark plugs are fouled out. I had them replaced at 35,000 miles so they are going to replace them and see how that goes. Car still at the dealer. Will update again.

I have a fiat 500 with roughly 17000km on it, my car does the same and I’m always unable to find the issue. Ran it through a code reader. Turns out it’s the emission sensor that’s broken, if it’s not installed properly or changed it causes a lot of issues. Usually with mine this happens in winter or really rainy days. So I hope that helps.

Update, check your vin number on https://www.nhtsa.gov/recalls because there’s a recall for a lot of models due to a wiring issue.

Help me find out what the cause will be

I have a 2013 Fiat lounge and had similar issue as shown below. While on drive it goes to neutral and does't move for some time does anyone solved something like this before

I have had the same problem with mine, I am unsure why it has done this, I had a man look at it and did a diagnostics but no serious codes came back. My car at the start would only stay in neutral but after a few hours it was back to normal. I am looking for help with this, I don’t know wether to drive it or not! Thanks guys