2017 has been a landmark year for Mercedes-AMG in the US. This year alone, sales of AMG models in America jumped 50 percent to 30,116 models. That impressive spike in sales is largely credited to the success of the new entry-level AMG 43 line, which AMG just finished rolling out this year. Don’t look now, but it appears that Mercedes-AMG isn’t about to slow down on expanding its performance line. On the contrary, Automotive News is reporting that the AMG line will see another big expansion by 2019. This expansion will include, among other models, a new line of AMG 53 models.