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_6 (model VARCHAR, mpg_uk_combined VARCHAR, l_100km_urban__cold_ VARCHAR, green_rating VARCHAR, manufacturer VARCHAR)

### Question ###
What model has a g green rating, has chrysler jeep as a manufacturer, has an l/100km urban (cold) less than 18, and has an mpg-uk combined of 27.7?

### Accurate SQL ###

SELECT model FROM table_name_6 WHERE green_rating = "g" AND manufacturer = "chrysler jeep" AND l_100km_urban__cold_ < 18 AND mpg_uk_combined = 27.7