The Guide to Legal Car Modifications for All States

Vehicle modifications can take many forms, from simple modifications such as light window tinting to under-vehicle LED lighting to the more complex frame and suspension modifications. Laws and regulations for vehicle modifications have been set in place for many reasons, including being an effort to reduce harmful vehicle emissions and ensure drivers stay safe through the reduction of possible vehicle-related distractions.

Some of the items that can be considered a vehicle modification by different states include:

  • Mufflers, including whether use is required, decibel limits, and baffle requirements
  • Sound systems, including decibel limits related to time and location
  • Frame and suspension modifications (“lifting” or “low-riding”)
  • Lighting, such as the required amount of working vehicle lights, locations, such as under-vehicle LED lighting, and overall limits to brightness and possible color
  • Windows, including tinting limits and allowed tint types (e.g., reflective tint)

Violating the laws related to vehicle modifications can result in fines and penalties, so when driving around your hometown, or planning a trip out of state, be sure to check that any modifications to your vehicle comply with state laws and regulations.

In addition, many states have laws and regulations regarding what is considered an “antique vehicle.” Since this can impact items such as seat belt requirements, emissions, and more, be sure to check that your older vehicle falls within legal guidelines for an antique before heading out on that cross country roadtrip.

Also, vehicle modifications may impact the ability to get car insurance as well as the overall cost. YourMechanic has information on how to insure a car with modifications to help drivers stay informed and educated.


The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

Symptoms of a Bad or Failing Exhaust Clamp
If your exhaust is noisy, loose, or failing an emissions test, you may need to replace an exhaust clamp.
The Safest Cars for Teen Drivers
For For a parent, there is nothing more terrifying than handing over a set of car keys to your son or daughter for the first time. When they hit the road, you'll have no control of their safety. Everything will...
The Guide to Legal Car Modifications in Pennsylvania
ARENA Creative / Shutterstock.com Whether you currently live in Pennsylvania or will be moving there, you need to know the regulations on vehicle modifications. The following information will help you make sure that your modified car or...

Related questions

How do I change the audio controls?
You can customize the audio controls to make the sound system ideal for your ears. The controls that you can personalize are Bass, Treble, Balance, and Fade. Adjusting these controls only takes a few seconds: 1. Press the Setup button....
Safe to drive with hole in muffler
Hi there. A hole in the muffler is typically not a really serious issue. It should be safe to drive the vehicle. My biggest concern though is the exhaust itself. If the hole is allowing exhaust to enter the cab...
My back rear tire is leaning inward at the top and wheel is getting some tear on the inside of the tire
If you have one of the rear tires leaning in then you have damaged the upper control arm or spindle is bent. Have the vehicle suspension checked for damaged components and have alignment done.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com