For New Jersey,
a vehicle is determined to be a total loss
if the cost of repairs plus the scrap value of the vehicle is greater or equal to the actual cash value of the vehicle. Because you know the value of the repairs, your next step would be to determine the value of your vehicle. From here, you can make a determination for yourself. Another factor to consider if that determination of fault in the accident. If the vehicle was determined to be caused by someone else (which is determined through insurance adjusters, not police), you might be able to petition to have the out of pocket repairs compensated by the other at-fault driver. Still, you would want to determine the actual cash value of your vehicle first before this.