What makes it not accelerate after a long drive?

Might be fuel pump or filter

worn belt, or the cv axels. drive in a tight circle each direction and listen for for a clicking sound. if you hear one then your cv axels need to be replaced

You may have a bad front wheel bearing, have a local shop drive the car and confirm this is the problem

Check to see if one of the motor mounts have failed.

Go back to that VW dealer and complain. I'm sure you payed plenty, and I know in my shop, if a customer's car is not repaired to their satisfaction, I want to know, and make it right. Sometimes parts can be bad right out of the box, and sometimes problems are misdiagnosed. Go back, but don't agree to pay for anything untill you get a satisfactory explanation. Good luck.

You may have dirty or clogged fuel injectors, may also be problems with the ignition system. Might also check the fuel pressure to make sure the fuel pump is working correctly.

Make sure that the timing is correct and that the spark from the coil is healthy. Problem can also be with the overdrive in the converter. If it's stuck on it can do that too.

no the wheel turning exersize did not do any damage, when u go back 2 the dealer tell them u would like 2 take them 4 a ride so that u can duplicate the trouble for them sometimes this is the only way 2 identify a problem that only occures with you driving

If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_00678fd4800d19c5

no it should not spin when is in 2wd thanks