The process would be that simple IF Audi allowed 3rd party buyouts without adjusting the payoff amount.
Rather than the $32k payoff that you or an Audi dealer buy the car for, when CarMax requests the payoff it will come back at $38k so instead of $4k in equity you’re $2k underwater if you want to sell to CarMax. Just spitballing numbers here.
As noted above you just need to get as many quotes as possible, no one can tell you for sure. Shop it at all the online buyers just to get a benchmark, then shop it at any local or online Audi dealers or anyone else for that matter.
All that said, in CA you don’t pay sales tax if you buy and then sell a car within 10 days. So it should be possible to buy it and then flip it quickly without paying sales tax.
