Automotive & Aftermarket News / News & Car Culture

9 Facts and Myths About the EPA’s Proposal to Prohibit the Conversion of On-Road Vehicles into Race Cars

Much has been said about the EPA’s proposed regulation against converting street vehicles into race cars — in the media and the proposal itself.

The EPA proposal comes in at over 600 pages and is filled with murky language, leaving various media outlets to draw their own conclusions on what the regulation means. The bottom line, according to SEMA officials, is the regulation would make it illegal to convert a certified motor vehicle into a vehicle to be used solely for competition.

This is the intent of the regulation, as confirmed by the EPA.

It is a fact.

SEMA officials have assembled nine other facts and myths about the regulation. See them below, and read more here:

Myth: This proposal is not changing current law.

Congress never intended the Clean Air Act to be interpreted as giving the EPA the authority to regulate vehicles used solely for competition, regardless of whether the vehicles were once emissions-certified road vehicles. Once a vehicle is taken out of use as a road vehicle and dedicated solely to racing, it is beyond the laws which apply to road vehicles. The EPA and SEMA fundamentally disagree on this point. SEMA has cited the statutory text, legislative history, and congressional intent of the Clean Air Act, as well as 46 years of history whereby vehicles have been converted from certified road status to status as race vehicles without any objection from the EPA.

Myth: The EPA is merely clarifying the law as it relates to motor vehicles and nonroad vehicles, and its proposal only affects vehicles driven on the streets.

The EPA is adding new language to the regulations. This new language states that a motor vehicle can never be modified, even if it is used solely for competition and never again used on public roads. The EPA is seeking to prohibit modifications affecting any emissions-related component, such as engines, engine control modules, intakes, exhaust systems, etc.

Myth: The EPA’s proposal only affects medium- and heavy-duty vehicles.

The EPA inserted the problematic language into a rulemaking that focuses on medium- and heavy-duty vehicles, however, the rulemaking also includes a section entitled “Miscellaneous EPA Amendments.”  The language affecting “vehicles used solely for competition” (i.e., racecars) was a “miscellaneous EPA amendment” and would, in fact, affect all light-duty vehicles, not just trucks.

Myth: SEMA is overreacting, this will never get passed.

The EPA has issued a proposed regulation. Regulations are issued by federal agencies and not voted on by elected representatives. If the language becomes final (EPA is expected to issue a final regulation in July), then it will have the force of law and can only be challenged in federal court or overturned by Congress.

Myth: The EPA could not enforce this proposal.

The proposal would give the EPA the power to enforce against any vehicle owner that converts his or her emissions-controlled motor vehicle into a vehicle to be used solely for competition. Whether or not the EPA chooses to enforce, it would be illegal for an individual to convert their motor vehicle.  Additionally, the EPA has stated that it will enforce against aftermarket companies that sell parts for use on the converted vehicles, which will limit racers’ access to parts.

Myth: The EPA’s proposal would not affect vehicles that have already been converted into racecars.  

It is the EPA’s position that they will be able to enforce against vehicles that have already been converted in the past. While the EPA has indicated that it does not currently plan on enforcing against individuals, it does plan on going after the companies supplying parts for vehicles that have already been converted. So, if you have a racecar that began life as a street car, this regulation would affect your access to parts, and leave you open to enforcement if the agency so chooses.

Fact: The EPA’s proposal would not affect racecars with original emissions controls.

The EPA notes that race vehicles with original, unmodified emission controls, including the original engine configuration, engine control module, intake and exhaust components, do not violate the law.  The issue is that very few competition race vehicles have been left unmodified and in a certified configuration.

Fact: The EPA’s proposal would not affect purpose-built racecars, such as sprint cars, open-wheel dragsters and the cars that currently compete in NASCAR.

The EPA agrees that vehicles that were originally manufactured for racing are excluded from regulation under the Clean Air Act. However, the EPA believes this exclusion extends only to vehicles that were never certified for on-road use or issued a VIN.

Fact: The EPA’s proposal will not affect the exemption for “nonroad vehicles,” such as dirt bikes, ATVs, snowmobiles and boats used solely for competition.

The EPA has indicated that it will continue to allow “nonroad vehicles” (dirt bikes, ATVs, snowmobiles, boats) to be exempted from certain emissions regulations if they are used solely for competition.  Distinct from its stance on motor vehicles, however, the EPA’s current position on nonroad vehicles allows emissions-certified nonroad vehicles to be converted into vehicles used solely for competition.

Get the Facts for Yourself

You can read the proposal for yourself here: Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles–Phase 2, 80 Fed. Reg. 40,138 (July 13, 2015), docket no. EPA–HQ–OAR–2014–0827:

Please use the search function to locate this provision within the proposed regulation:



Tags: , ,


  1. Shawn McNutt says:

    this is another example of why we need to fight against big government.we should never allow government to dictate to us what we can do to with our own property. It’s time to vote for people who are for limited government. I miss the days when we were not dependent on gov. and we as a Nation embraced rugged individualism instead of the Winnie society we now have.we as a nation need to man up

  2. james ballenger says:

    We really need to stand up to the EPA or they will ruin our hobby!!

  3. Pingback: EPA Looking to Prohibit Conversion of Street Vehicles into Race Cars - OnAllCylinders

Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.