CREATE TABLE table_2326823_2 (model VARCHAR2, max_power_output VARCHAR2)

How many models have maximum power output is 162kw (220 ps) at 6,300 rpm?
SELECT COUNT(model) FROM table_2326823_2 WHERE max_power_output = "162kW (220 PS) at 6,300 rpm"
SELECT COUNT("model") FROM "table_2326823_2" WHERE "162kW (220 PS) at 6,300 rpm" = "max_power_output"