Is this NO NO thing to do at car dealership?

"She did no research on the golf"

This is her fault entirely.

"She kept telling the salesperson to take his offer back because it is to high."

Which he probably did.

"Finally, she agreed to the price and paid cash."

She agreed, and then paid cash? This car is hers.

"She bought the automatic golf car without knowing how to drive their automatic because she had been driving a stick shift toyota for 30 years."

Put it in drive, and then go.

"Should she have gone to a car intelligent place to purchase her car? The price she paid is NOT what the dealership will give."

Your first statement here was "My aunt recently went to a new volkswagon dealership." They gave her a price, she agreed, and paid for the car. ???

"The car she wanted had to be driven up and it had 150 miles."

Okay, so they did a dealer trade. 150 miles is nothing. Until it's been registered, it's not used, and most manufacturers will do an odometer statement at the time of purchase. If the vehicle had 150 miles, the 3 year/36,000 mile warranty will actually be 3 years (from time of purchase)/36,150 miles.

"Should she have shown up with a man at the dealership so the salespeople will not try to cheat her?"

Why would she need a man? In my experience, women are typically more educated about the sales process than men, and are usually the decision maker in the family. Men do all the talking, but women have the final say. Contrary to popular belief, salesmen do not cheat. The want to make money, customers want to save money. Don't be angry because they did their job better than a customer.

"Is 150 miles okay for a new car?"

Yes.

"Should she have used a car negotiator company?"

No. On average, there is a 5%-7% markup on a new vehicle (from invoice to MSRP). A proffessional negotiator would have negated any potential savings.

Don't you think these are questions that should have been asked BEFORE she bought the car?

150 miles on a 2015 model off the lot is not bad at all, and is probably pretty normal, due to test drives. I would not continue to think about that.

If she got the car she wanted for the price she was willing to pay, then there should be no problem there either. There would only be issues if she was promised certain things on the car at that price and they were not provided, but if she signed the sales contract and took possession, it may be too late to contest much of that.

And I have never in all my (too many) years of life ever heard of someone who could drive a manual transmission not being able to drive an automatic. The other way around is common, but your statement just does not make sense in my experience.

If the car wasn't on the lot, then they either had to drive it there, or put it on a truck. 150 miles IS okay, depending on where the originating dealership was located. It sounds like your Aunt got the price she wanted, so no - she probably should not have used a negotiation company.

150 miles is absolutely nothing.

She doesn't have to go with a man to the dealership, just someone who is knowledgeable about cars and able to negotiate prices.

I don't really understand the rest of your question though. I don't understand how someone can drive a manual transmission but not an automatic...

150 miles is pretty normal due to test drives.

It's no one's fault but your aunt's that she chose to do no research and go it alone. I'm a woman and I don't get cheated because I know what I'm looking for and stand firm in my decisions.

Anybody that can drive a manual transmission can drive an automatic.

That's like saying you can run but you cant walk.

Are you slow ?

Last new car I bought had 365 miles. (14 months before it sold.)