My wife and I have a 2012 VW Jetta w/ 100K miles on it. We have an issue where the car will not start when we drive it and then let it sit for an hour or two, but will start fine after sitting for several hours. The engine turns over when we try to start it, but doesn't run. The mechanic has tried a few things, including replacing the camshaft sensor, but without success.
Any ideas? What type of issues could occur only shortly after the car has been driven? Something to do with the temperature of the car? Thank you!