Back when I was leasing my Audi TT, I did it through University Audi. This review is about the dealer, not the car, so I'll just say that my TT was very fun, very expensive, and not very reliable. Fortunately, I was leasing it here, and these guys treat their leasers right.
Whenever I brought the car in, be it because of the 3 different defective turbo diverter valves, the tape that wouldn't eject, being out of windshield washer fluid, or just because some things where rattling, they happily gave me a loaner car as long as needed. And when I got my car back, it was always spotless on the inside and out.
If you want to lease a car and have the pockets to be treated right, these are the guys to come to.
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