One is restricted to do certain types of melachos (creative work) during hol hamoed.
Do these restrictions extend to prohibiting the purchase of a new car?
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Rabbi Mordechai Eliyahu Zatzal says that it is permitted to purchase a car on Chol Hamoed if he is afraid that after Yom Tov he will not find such a quality car or the price will change.
מותר לקנות מכונית וכד' אם יש חשש שאחרי החג לא ימצא כמוה בטיב או במחיר (שו"ע תקלט סע' ה).