Ban and a fine are minimum. Jail is possible. If you are more than double the limit, you can also have your car seized.
does it also inform other member states of EU,car rental agencies?
Your national license will be taken from you and sent to your embassy so it can be sent home and cancelled.
if refusal to take test is an option?and what are the penalties then?
Refusal to take a test is a crime. If you are really drunk, they can and will legally force you to take a blood test (the justification is that they need to know what medical treatment you need).