CREATE TABLE table_name_90 (max_power_at_rpm VARCHAR(255), displacement VARCHAR(255), engine_name VARCHAR(255))
What is the maximum power at rpm for the engine named 2.0 TDI that has a 1968cc displacement?
    
SQL: SELECT max_power_at_rpm FROM table_name_90 WHERE displacement = "1968cc" AND engine_name = "2.0 tdi"