Welcome aboard. Glad to have you join this crowd of Airstreamers.
I am towing our 2015 23D International Serenity with my 2007 Mercedes ML320 CDI 3.0L diesel. Our trailer weighs 6,068 pounds ready for camping. We use a Hensley Arrow hitch.
There have been several Audi discussions about towing in this forum.
Give Andy Thompson a call at CanAm in London Ontario. (phone (519) 652-3284)
He modified the ML320 hitch and Hensley stinger and we towed a new empty 25FB International Serenity home from the dealer.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels