If you want to research the vehicle yourself, you need the VIN or vehicle identification number. The dealership can provide you with this information.
If the accident history aligns with what the salesman has told you, you can move forward. But if the CARFAX report shows something that the salesman or dealership didn’t disclose, ask about it. If any part of the explanation seems strange or makes you uncomfortable, you aren’t required to move forward with the sale. Back out and find another car elsewhere!