Audi is only one of Volkswagen's luxury brands. Lamborghini, Bentley, and Bugatti are other premium brands under the Volkswagen umbrella.
VW dealers may feel "charged up", but they are the weakest link in the growth of the VW brand in North America.
VW builds good vehicles -- well-designed, expertly engineered, with excellent manufacturing. But when customers run into problems, and every car buyer does eventually, they expect quality service from their local dealer. VW dealership service departments do not provide good service or a good experience. If it was not for independent shops with good VW mechanics, there would be a lot fewer VWs on the road, because the dealerships are doing a terrible job.
Whenever you hear someone bad-mouth Volkswagen, invariably it is because of a bad service department experience at a VW dealership.