What maintenance do you suggest, if any? Thank you!

Audi's are great cars but you have to keep up with the maintenance. I own a 2015 Audi S3. I would start with your owners manual and see what is due at the 50K mile service. I'm not going to lie, it's going to be a bit pricey. Assuming you are not having any problems right now, start with changing the oil, filter and air filter. Then move on to flushing the coolant and brake systems and clutch fluid if a manual. I would do spark plugs next then move to the transmission fluid, filter and differential oil. Once all the fluids have been replaced, inspect the brakes and rotors and replace as needed. You can get quality brake parts from Rockauto.com at about half the price of OEM. As time and your budget allow, start checking suspension bushings and rubber mounts. You'd be surprised how quickly these wear out and your car will feel like new when replaced. Also, if your car has a cabin air filter, replace it when changing the oil. I hope this helps and gives you a starting point on some of the major maintenence items.