You are riding in Sarah's car when she fails to yield and causes an accident. Which of the following coverages would NOT pay for your injuries?

Answer: Sarah's Collision coverage

In the scenario described, if you are riding in Sarah's car when she fails to yield and causes an accident, the coverage that would typically not pay for your injuries would be "Medical Payments Coverage" (MedPay) or "Personal Injury Protection" (PIP), depending on the specific insurance policy and jurisdiction.

Here's a breakdown of the relevant coverages and why they may or may not apply:

1. Liability Coverage: This coverage pays for injuries and property damage you cause to others in an accident where you are at fault. Since Sarah is at fault in this scenario, her liability coverage would typically cover injuries to other parties involved in the accident, including you as a passenger in her car. However, it would not cover your injuries.
2. Medical Payments Coverage (MedPay): MedPay is a type of coverage that pays for medical expenses for you and your passengers, regardless of who is at fault in the accident. However, MedPay typically does not cover injuries sustained by the policyholder (Sarah) or members of her household. Since you are a passenger in Sarah's car and not a household member, MedPay may not cover your injuries in this scenario.
3. Personal Injury Protection (PIP): PIP coverage is similar to MedPay but may provide broader coverage, including medical expenses, lost wages, and other expenses related to injuries sustained in an accident, regardless of fault. However, like MedPay, PIP coverage may not cover injuries sustained by the policyholder or members of her household. Therefore, whether PIP would cover your injuries depends on the specific terms of Sarah's insurance policy.
4. Uninsured/Underinsured Motorist Coverage (UM/UIM): This coverage protects you if you are injured by a driver who does not have insurance (uninsured) or does not have enough insurance to cover your injuries (underinsured). Since Sarah is the at-fault driver in this scenario, UM/UIM coverage would not apply.

Therefore, while Liability Coverage would not pay for your injuries since Sarah is at fault, Medical Payments Coverage (MedPay) or Personal Injury Protection (PIP) may also not apply depending on the specific terms of Sarah's insurance policy and jurisdiction. 

It's essential to review Sarah's insurance policy details to determine the coverage available for your injuries in this situation.