Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1212189_1 ( capacity VARCHAR, model_engine VARCHAR )

### Question ###
How many capacities are possible for the 1.6 Duratec model/engine?

### Accurate SQL ###

SELECT COUNT(capacity) FROM table_1212189_1 WHERE model_engine = "1.6 Duratec"