Complete Guide to Vehicle Modification Laws in Vermont
Vermont offers vehicle enthusiasts considerable freedom when it comes to modifying their rides. The Green Mountain State maintains relatively permissive laws for most modifications, though some categories do require attention to specific regulations. This comprehensive guide breaks down what you can and cannot do legally when modifying your vehicle in Vermont.
Lowering
Status: Conditional
For ordinary passenger cars Vermont sets a maximum bumper height of 22 inches with no minimum and no clearance rule. A rim-line scrub test does apply to special vehicles — street rods, homebuilt, exhibition, and neighborhood electric vehicles. See Lowering in Vermont for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Lift Kits
Status: Conditional
Vermont caps bumper height at 22 inches front and rear on pleasure cars, rising by weight class for trucks and multipurpose vehicles to 28 inches front and 31 inches rear on four-wheel-drive and dual-wheel trucks. There is no numeric suspension-lift limit. See lift kits in Vermont for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Window Tint
Status: Conditional
Window tint in Vermont operates under straightforward rules that are more permissive than many states. Side and rear windows allow non-reflective tint, while windshield tinting is restricted beyond the manufacturer's AS-1 line. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Light Bars & LED Lighting
Status: Conditional
Vermont has the strictest approval threshold in the country: no lighting device over 4 candlepower equipped with a reflector may be used on a highway unless the Commissioner has approved the device, lens, and candlepower. See Light bars and LED lighting in Vermont for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Headlight & Taillight Tint
Status: Illegal
Smoked or tinted film on headlights and taillights is illegal in Vermont. Headlights must emit white light and taillights must show red at the required visibility distance, and tint that dims or discolors them violates those requirements. See headlight and taillight tint for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Exhaust Noise
Status: Conditional
Vermont has clear regulations regarding exhaust noise that include muffler requirements and specific sound limits. Most quality aftermarket exhausts should comply when properly designed and installed. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Aftermarket Exhaust
Status: Conditional
Aftermarket exhaust systems in Vermont are permitted with requirements for proper muffling components and emissions compliance. This means you can upgrade to that performance exhaust system, but straight pipes and emissions equipment removal are prohibited for street-driven vehicles. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Wheel & Tire Protrusion
Status: Conditional
Vermont fails a vehicle at inspection if any fender has been removed or a fender fails to cover the tread portion of a tire. Modified vehicles must have fenders covering the entire tire tread width from 15 degrees forward to 75 degrees rearward of the wheel centerline. See wheel and tire protrusion for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Underglow
Status: Conditional
Underglow lighting in Vermont is allowed but comes with important color and pattern restrictions to ensure it doesn't interfere with emergency vehicle identification. Most colors are acceptable when used properly, allowing for creative lighting expression. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Window Banners
Status: Illegal
No material may be painted or adhered on or over any transparent part of the windshield except enumerated items: a lower-right-corner area up to 4 by 12 inches, an upper-left-corner area up to 2 by 2.5 inches, required stickers, and transponders. There is no top-strip banner allowance. A printed windshield banner is not legal in Vermont. See window banners for the full breakdown. Get the exact limits, statute citations, and a printable PDF in your compliance report.
License Plate Frames
Status: Conditional
License plate frames in Vermont are allowed as long as they don't obstruct the plate's visibility or identifying information. Decorative frames are fine, but avoid anything that covers registration information or makes your plate difficult to read. Get the exact limits, statute citations, and a printable PDF in your compliance report.
Planning Your Build
Vermont's generally permissive approach to vehicle modifications makes it an excellent state for automotive enthusiasts. Most aesthetic and performance modifications are either completely legal or have reasonable restrictions that are easy to follow.
For a personalized compliance report with exact limits, statute citations, and a printable PDF you can keep in your glovebox, check out our compliance report.
Every figure in this guide was verified against primary sources — statute text, administrative code, and state inspection manuals — in August 2026. Laws change and local ordinances may add requirements beyond state law, so verify with local authorities before modifying your vehicle. This is not legal advice.