Can a dealership void new car warranty for changing the oil yourself?

Generally speaking, changing the oil yourself will not void your new car warranty. The Magnuson-Moss Warranty Act of 1975 prevents manufacturers from voiding warranties simply because you used an unauthorized repair facility or service provider. However, there are a few exceptions to this rule:

- If the car requires specific materials, parts, or procedures to maintain the warranty and you use parts that aren't specifically recommended by the manufacturer or deviate significantly from the recommended maintenance schedule, it could potentially void your warranty.

- If you cause damage while performing the maintenance yourself, it may also void the warranty for the damaged parts.

So, while changing the oil yourself usually won't affect the warranty, it's crucial to follow the manufacturer's recommended maintenance schedule and use the specified materials and procedures. If you're not comfortable doing the maintenance yourself, you should have it done by an authorized service provider to avoid any potential warranty issues.