Yeah that engine warning light is becoming common for motability cars it seems.
We have a Polo GTI with under 1000 miles on it. We collected it this year.
It recently decided to randomly refuse to start. I initially thought it was a one-off so I carried on and all was ok. A week or so later we picked up our 8 month old grandson and we hit a traffic jam. I popped it into eco mode which started the start/stop rubbish. It then refused to start when I pressed the accelerator. We were stuck in the middle of the road so I had to call out the RAC, but their nearest van was an hour+ away. So I called an Uber to get my disabled wife and grandson back home. The RAC man had no idea what was wrong with it, but we managed to get it back on the drive.
A few days later it happened again (that engine warning light was on this time). The RAC man told me it was too dangerous to drive, so he took it to the dealer. We now have a rental car and have had no updates on what is happening with our car.
However, when the rental man dropped off the rental car he said that his sister’s new motability car had exactly the same problem as ours a few days prior, but hers was a Ford. He had to go and collect her.
So there is definitely something wrong with some new builds and it all seems to be related regardless of the manufacturer.