* The age of the vehicle: Most new car warranties have a time limit (e.g., 3 years or 36,000 miles) and a mileage limit. Once the vehicle is outside this timeframe, the warranty likely won't cover the axle.
* The type of warranty: A basic warranty might cover defects in materials and workmanship, but not wear and tear. Extended warranties might offer broader coverage, but this varies greatly by the specific contract.
* The cause of failure: If the CV axle failed due to a manufacturing defect, it's *more likely* to be covered. However, if the failure is due to neglect (e.g., driving with low transmission fluid), accident damage, or normal wear and tear, it's *less likely* to be covered.
* The specific terms of your warranty: The most important factor is your vehicle's warranty documentation. This document will detail exactly what is and isn't covered.
In short: You need to check your Mercury's warranty paperwork to see if CV axle failure is covered in your specific situation. Contacting your dealership or a Mercury customer service representative is also recommended to determine coverage.