SELECT mid_atlantic_south__washington, _dc_ FROM table_16105186_2 WHERE midwest__des_moines_ = "300 g/mi (186 g/km)"
Berapa peringkat emisi di Mid-Atlantic South untuk kendaraan yang diberi peringkat 300 g/mi (186 g/km) di Midwest?
CREATE TABLE table_16105186_2 (mid_atlantic_south__washington VARCHAR, _dc_ VARCHAR, midwest__des_moines_ VARCHAR)