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_name_4 ( points INTEGER, engine VARCHAR, year VARCHAR )

### Question ###
What is the average Points when the engine was a climax straight-4 earlier than 1958?

### Accurate SQL ###

SELECT AVG(points) FROM table_name_4 WHERE engine = "climax straight-4" AND year < 1958