* Extent of the damage: A simple crack might be repairable, while a completely shattered axle or one that caused significant damage to other components (steering, suspension, frame) could be far more costly to fix.
* Vehicle's value: If the Jeep's value is low to begin with, the cost of repair might exceed its worth, making it economically viable to total it.
* Insurance company's assessment: Ultimately, the insurance company will determine if the cost of repair (including labor and parts) surpasses the vehicle's pre-accident value (or its fair market value). Their decision will take into account the factors mentioned above.
In short, a broken front axle is a serious issue, but it doesn't automatically mean the Jeep is totaled. A proper assessment by a qualified mechanic and the insurance company is necessary to make that determination.