Skip the auto shop - Our mechanics make house calls

The Guide to Legal Car Modifications in Delaware

The Guide to Legal Car Modifications in Delaware ARENA Creative / Shutterstock.com

Delaware regulates the modifications that you can make to your vehicle. If you live in the area or are planning to move to the state, make sure your vehicle is street legal by following the laws and regulations listed below.

Sounds and noise

Delaware limits the sounds from the vehicle sound system and muffler. Failing to follow the requirements can result in a fine ranging from $25 to $1,000 each time you violate a noise ordinance.

Sound system

  • Sound systems cannot be heard 50 feet or more from the vehicle.

Muffler

Delaware also has restrictions on the mufflers that are permitted on your vehicle:

  • All vehicles must have a muffler installed.
  • Muffler cutouts are not permitted on highways.
  • Straight exhaust systems are not permitted.

Tip: Also check with local county laws in Delaware to make sure you are following any municipal noise ordinances that may be more stringent than state-level laws.

Frame and suspension

Delaware also has regulations on the frame and suspension of vehicles.

  • Bumper heights can’t exceed 30 inches for all vehicles with a Gross Vehicle Weight Rating under 10,000 pounds.

  • Body lifts are limited to three inches.

  • Vehicles can’t exceed 13 feet 6 inches in height.

Engine

Delaware does not have any engine modification regulations listed.

Lighting and windows

Lights

  • Colored lamps other than those installed by the factory are not permitted on the front of any passenger vehicle.

  • Two fog lamps are permitted but must be white or yellow light.

  • Two spotlights are permitted but can’t be aimed to the left or over 100 feet in front of the vehicle.

  • License plate lights are not permitted.

Window tinting

  • Non-reflective tint is permitted on windshield above the AS-1 line of the manufacturer.

  • Front side window tint must allow greater than 70% of light to pass through.

  • Back and back side windows can have any tint darkness but side mirrors are required if tint is present.

  • Metallic and reflect tints are not permitted.

Antique/classic car modifications

Delaware requires that all antique or classic cars have an antique license plate and that they are not used for daily transportation.

If you want to modify your vehicle but want to be in compliance with the laws in Delaware, YourMechanic can provide the mobile mechanics to help you install the new parts. You can also ask our mechanics what modifications may be best suited to your car using our free online Q&A system, Ask a Mechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

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

More related articles

How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...


Related questions

Q: Went with bigger tires & installed a high flow filter/muffler

Anytime you make changes to the tire's overall diameter, multiple components are going to be thrown out of calibration including, ABS, speedometer and traction control. There was a time when a professional mechanic could reset ECU's, but recent changes in...

Q: I am looking to Turbocharge my 2008 Chevy Cobalt with manual transmission.

Hello. It is indeed possible to turbocharge this vehicle. Adding a turbocharger will definitely increase your horsepower. The main thing you need to keep in mind is that this will put added stress on the engine. Due to the mileage...

Q: Debating installation of a leveling kit

The biggest problem people run into with these types of kits is buying the cheapest kit they can find. Not saying that the cheapest may not be good, but it is much more important to find a kit that is...