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Does a JB4 void a BMW warranty?

I have a BMW 330i and want to give it a boost with a JB4 performance tuner. This would be my first car mod so I’m not sure how it all works yet. Does a JB4 void a BMW warranty?

Amber Reed · Updated on Aug 30, 2023

Reviewed by Shannon Martin, Licensed Insurance Agent.

Installing a performance tuner won’t automatically void your factory coverage, but your dealership

might not honor your warranty

if they believe the JB4 damaged the car. While some dealerships are more mod-friendly than others, you could run into trouble if you ever need to file a claim.

That doesn’t mean you shouldn’t get a JB4—in most cases performance tuners don’t affect warranty coverage at all—but you should still be aware of the risks. If you want to offset those risks, upgrading your

is a good place to start. If your modified car is protected by

collision insurance

and customized parts and equipment coverage, your JB4 will be covered after an accident.

For help finding great

BMW car insurance

, turn to

. Just download the app to get competitive quotes in under a minute. Jerry can help you switch plans and will even assist you in canceling your old policy!

MORE:

How to modify a car

View full answer

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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

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