The Stealth hitch part # 391AUDQ319 for your 2020 Audi Q3 has a 6,000 lb towing capacity so it would easily be able to tow a 3-4,000 lb trailer like you mentioned. This comes with wiring and the ball mount as well. view full answer...
The Stealth Hitches Hidden Rack Receiver part # 391AUDQ319 is a great option for a 2020 Audi Q3. If you need to obtain the ball mount without the extra wiring and what not that comes with the conversion kit we do sell that separately as part # 391BMU3S which will give you a ball height of 18". You can then add the Hitch Ball part # 63845. view full answer...
I went out to the warehouse and pulled Curt trailer hitch ball # A-82 to measure it for you. The height from the mounting surface to the top of the ball is 2-3/4 inches. I have included a picture showing this measurement. view full answer...