i would yes and no...
yes, because its mentioned on your registration (on the back side) that the car is under the loan of xxx bank.
i took one and it cost me 200 riyals from doha bank.

no, because no one ever asked me for the paper that i paid 200 riyals for. not even at qatar border.

the next time i go i will not be applying for the NOC and we see what happens.
i went to dubai too.