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_21154679_1 ( top_speed VARCHAR, max_power VARCHAR )

### Question ###
What is top speed of a petrol engine at ps (kw; bhp)@5250-6250?

### Accurate SQL ###

SELECT top_speed FROM table_21154679_1 WHERE max_power = "PS (kW; bhp)@5250-6250"