The 6 Series is a great car, but there may be speed freaks out there who want a little more performance for their $30,000
. We found several examples of the Mercedes CLS 550, as new as 2014, for less than $30,000. The CLS 550 came with a 4.7-liter V8 with 402 hp going out to RWD or 4Matic AWD. If that's not enough, we also found the previous generation CLS in the more powerful AMG trim. The CLS 63 AMG came with a hand-built 6.2-liter V8, which pumped out 507 hp. It may not have the affordable maintenance of the Kia, but it's amazing to think that a powerful AMG Mercedes can now be had for the same money.