Selling a catalytic converter in Texas is not automatically illegal, but it became heavily regulated in 2023 under Texas HB 4700, and selling one without proper documentation can now result in a felony charge. Whether a sale is legal depends on who is selling it, who is buying it, and whether the paperwork requirements are met.
Catalytic converter theft became one of the fastest-growing property crimes in the US between 2019 and 2023. Texas responded with legislation specifically targeting the sale and purchase of these parts. Many Texans don’t realize how strict the rules now are, even for legitimate transactions.
This article breaks down exactly what Texas law requires in 2026, who can legally sell a converter, what documentation is mandatory, what the penalties look like, and how Texas rules compare to the national picture.
Is It Illegal to Sell Catalytic Converters in Texas?
Selling a catalytic converter in Texas is legal only when specific documentation requirements are met and the sale occurs through a licensed buyer. Selling without proper paperwork or to an unlicensed buyer is a criminal offense under Texas law as of 2026.
Texas HB 4700, enacted in 2023, dramatically changed the rules for catalytic converter sales in the state. Before that law, the secondary metal recycler market operated with minimal documentation requirements. After it, every sale of a catalytic converter requires the seller to provide identification, proof of vehicle ownership or authorization to remove the part, and other specific information.
The law was designed to choke off the market for stolen converters. Catalytic converters contain precious metals including platinum, palladium, and rhodium that can be worth hundreds of dollars each. Thieves historically could sell them quickly at scrap yards with no questions asked. HB 4700 eliminated that easy pathway.
Quick Facts on Texas catalytic converter sales:
- Selling a converter without documentation is a criminal offense
- Texas HB 4700 took effect September 1, 2023
- Buyers must be licensed secondary metal recyclers
- Sellers must provide photo ID and proof of ownership
- Cash payments for catalytic converters are prohibited under the new law
- Violations can be charged as state jail felonies or higher
The bottom line: if you have a catalytic converter you want to sell in Texas in 2026, you need the paperwork. No paperwork means criminal exposure, regardless of whether the converter is legitimately yours.
Texas Catalytic Converter Law 2023
Texas’s 2023 catalytic converter law, passed as House Bill 4700, created a comprehensive regulatory framework for the purchase and sale of catalytic converters in the state. It took effect on September 1, 2023, and remains in full effect in 2026 with no significant amendments since passage.
HB 4700 amended the Texas Occupations Code provisions governing secondary metal recyclers and added specific catalytic converter requirements that go beyond the general scrap metal rules. The law targets every point in the secondary market: what buyers can accept, what sellers must provide, and how transactions must be recorded and reported.
The law was bipartisan and passed with strong support. Law enforcement agencies, insurance companies, and auto industry groups all backed it as a necessary tool against what had become a nationwide organized theft epidemic.
Key provisions of Texas HB 4700:
- Requires photo ID from all catalytic converter sellers
- Requires proof of ownership of the vehicle the converter came from, or written authorization from the owner
- Prohibits cash payments for catalytic converter purchases by licensed recyclers
- Requires payment by check, money order, or electronic transfer only
- Mandates that buyers photograph the converter and record the seller’s information
- Requires records to be kept for at least two years
- Makes it a felony to purchase a converter without required documentation
Senate Bill 224, passed in the same legislative session, added related provisions addressing organized catalytic converter theft rings and enhanced penalties for theft and trafficking operations.
Texas HB 4700 Catalytic Converter
Texas HB 4700 is the primary state law governing catalytic converter transactions in Texas as of 2026. It fundamentally changed what secondary metal recyclers can legally buy and what private sellers must provide to complete a lawful sale.
The law’s core structure creates two parallel obligations. Sellers must bring documentation. Buyers must verify it, record it, and pay by traceable means. If either side fails their obligation, the transaction is illegal. A scrap dealer who buys a converter from someone who shows up without ID is breaking the law even if the converter wasn’t stolen.
HB 4700 also expanded law enforcement access to records. Licensed secondary metal recyclers in Texas must submit their catalytic converter purchase records to a statewide database accessible by police. This database allows investigators to trace stolen converters back through the supply chain to the person who sold them.
What HB 4700 specifically requires from buyers:
- Must be a licensed secondary metal recycler in Texas
- Must verify seller’s photo identification
- Must record the vehicle identification number (VIN) associated with the converter
- Must photograph the converter at the time of purchase
- Must record the seller’s name, address, and ID number
- Must pay by check, electronic transfer, or money order only
- Must retain records for at least two years
- Must submit transaction records to the statewide law enforcement database
The no-cash rule is the provision that surprises most people. A scrap dealer who hands over cash for a catalytic converter, even one with full documentation, is violating HB 4700. The payment traceability requirement is a deliberate anti-money-laundering measure built into the law.
Key Takeaway: Texas HB 4700 makes every catalytic converter sale a documented transaction. Both buyer and seller have legal obligations, cash payments are prohibited, and all records go into a statewide law enforcement database.
Can You Sell a Used Catalytic Converter in Texas?
Yes, you can sell a used catalytic converter in Texas, but only if you have the required documentation and sell to a licensed secondary metal recycler. A used converter from your own vehicle, removed legally during a repair or upgrade, can be legally sold when the paperwork is in order.
The practical requirements for a legitimate used converter sale in Texas in 2026 are more involved than most people expect. You cannot simply walk into a scrap yard and hand over a converter for cash. The scrap yard cannot legally accept it that way anymore.
What you need to bring to a legitimate sale:
Required documentation for a Texas used catalytic converter sale:
- Government-issued photo ID (driver’s license, state ID, or passport)
- Proof of ownership of the vehicle the converter came from (title, registration, or insurance documentation naming you as owner)
- The vehicle identification number (VIN) of the vehicle
- Written authorization from the vehicle owner if you are not the owner (mechanics removing a converter for a customer must have this)
- Willingness to accept payment by check or electronic transfer only
If you are selling a converter from a vehicle you own and can document, the sale can be completed legally. The process takes more time than it used to, but it is entirely legal and straightforward for legitimate sellers.
Who Can Buy Catalytic Converters in Texas?
Only licensed secondary metal recyclers can legally purchase catalytic converters in Texas as of 2026. Individuals, unlicensed businesses, and cash buyers operating without a Texas secondary metal recycler license are prohibited from purchasing converters under HB 4700.
A secondary metal recycler license in Texas is issued under the Texas Occupations Code, Chapter 1956. This license requires an application, a background check, a physical business location, and compliance with record-keeping and reporting requirements. Operating as an unlicensed metal recycler is itself a criminal offense in Texas.
The licensing requirement creates a controlled buyer market. There is no legal pathway for an informal cash buyer, a flea market vendor, or a private individual to purchase a catalytic converter from another private individual under Texas law. The transaction must flow through a licensed facility.
| Buyer Type | Can Legally Buy in Texas? | Requirements |
|---|---|---|
| Licensed secondary metal recycler | Yes | Full documentation, traceable payment |
| Unlicensed scrap buyer | No | No legal purchase pathway |
| Auto repair shop (for reuse) | Limited | Must document and comply with records rules |
| Private individual | No | Cannot purchase from another private party |
| Online marketplace (eBay, etc.) | Complex | Federal rules apply; documentation required |
| Out-of-state buyer | Complex | Must comply with destination state law and Lacey Act principles |
Auto repair shops that want to purchase used converters for resale or refurbishment face a gray area. Shops are generally not licensed as secondary metal recyclers, meaning their ability to purchase converters from the public is restricted. Shops that do engage in this trade need to verify their licensing status with the Texas Occupations Code requirements.
Can Scrap Yards Buy Catalytic Converters in Texas?
Licensed scrap yards can legally buy catalytic converters in Texas, but only when they hold a valid secondary metal recycler license and strictly follow the HB 4700 documentation and payment requirements. Scrap yards that fail to comply with these rules face criminal charges and potential license revocation.
Most established scrap yards and metal recyclers in Texas obtained or renewed their secondary metal recycler licenses after HB 4700 took effect in September 2023. The law gave licensed dealers a competitive advantage over informal or unlicensed competitors, who were effectively pushed out of the converter market entirely.
Compliant scrap yards in Texas operate under a specific intake process for catalytic converters. The converter gets photographed, the seller’s ID is verified and recorded, the VIN is documented, payment is issued by check or electronic transfer, and the transaction is logged into the statewide database. The whole process takes longer than it used to, but it protects both the dealer and the seller.
What a compliant Texas scrap yard must do when buying a converter:
- Verify and record seller’s government-issued photo ID
- Record the VIN associated with the converter
- Photograph the converter upon purchase
- Record seller’s name, address, and ID number
- Issue payment by check, money order, or electronic transfer only
- Retain all records for a minimum of two years
- Submit transaction data to the state law enforcement database
Scrap yards that skip any of these steps expose themselves to serious liability. A dealer who buys even one converter without proper documentation can face felony charges and license suspension.
Documentation Needed to Sell Catalytic Converter in Texas
The documentation needed to sell a catalytic converter in Texas in 2026 includes a government-issued photo ID, proof of vehicle ownership, and the VIN of the vehicle the converter came from. All three elements are required for a legal sale.
The photo ID requirement is straightforward. A Texas driver’s license, state-issued ID card, or a US passport all satisfy this requirement. The ID must be current and not expired.
Proof of vehicle ownership is where sellers sometimes run into trouble. The cleanest form of proof is the vehicle title with your name on it. A current vehicle registration in your name works in most cases. An insurance card showing your name and the vehicle is generally accepted. If you don’t have any of these, completing a legal sale becomes significantly more difficult.
| Document | Acceptable Form | Who Needs It |
|---|---|---|
| Photo ID | Driver’s license, state ID, passport | All sellers |
| Proof of ownership | Vehicle title, registration, insurance card | All sellers |
| VIN | From the vehicle itself or title | All sellers |
| Written authorization | Signed document from vehicle owner | Mechanics, non-owners |
| Removal receipt | Shop documentation of the work done | Optional but helpful |
The written authorization requirement applies specifically when the seller is not the vehicle owner. A mechanic who removes a converter during a repair and wants to sell it must have written permission from the vehicle owner. Without it, the sale is illegal regardless of the mechanic’s good faith.
Key Takeaway: Three documents are mandatory for every legal Texas catalytic converter sale: a photo ID, proof of vehicle ownership, and the VIN. Missing any one of them makes the transaction illegal for both the buyer and the seller.
Is It Illegal to Buy Catalytic Converters Without Paperwork?
Yes, buying a catalytic converter without the required paperwork is a criminal offense in Texas under HB 4700. The obligation falls on the buyer to verify and collect all required documentation. A buyer who accepts a converter without paperwork cannot legally complete the transaction.
This is one of the most significant shifts in the 2023 law. Before HB 4700, a scrap dealer who bought a stolen converter could argue they had no way of knowing it was stolen. After HB 4700, the law puts the verification obligation directly on the buyer. A dealer who buys without documentation is committing a crime, regardless of whether the specific converter was stolen.
The penalty for a buyer who violates the documentation requirement is a state jail felony under Texas law. A state jail felony in Texas carries a sentence of 180 days to 2 years in state jail and a fine of up to $10,000. For repeat violations or large-scale purchasing operations, charges can escalate to higher felony classifications.
Consequences for buying without paperwork:
- State jail felony for first offense purchasing without required documentation
- Fine up to $10,000
- Potential license revocation for licensed secondary metal recyclers
- Civil liability for damages to vehicle owners whose converters were stolen
- Potential federal charges if the operation involves interstate trafficking
The no-paperwork rule is strict, not discretionary. A scrap dealer who buys a converter from someone who seems trustworthy but cannot produce documentation still committed a crime. The law does not provide a good-faith exception for buyers.
Can a Private Person Sell a Catalytic Converter?
A private person can legally sell a catalytic converter they own in Texas, but they cannot sell it to another private individual. The sale must go through a licensed secondary metal recycler with all required documentation provided.
This is the aspect of Texas catalytic converter law that confuses the most people. The law does not prohibit private ownership or private sale of converters in the sense of a general transaction ban. It restricts who can be on the buyer’s side of the transaction. Only licensed recyclers can buy.
Selling a converter to a neighbor, a mechanic friend, or through a private online listing in Texas is not a legal transaction structure under HB 4700. The buyer in any of those scenarios is not a licensed secondary metal recycler, which means accepting the converter is illegal for them. Even if you are the legitimate owner with full documentation, selling to an unlicensed buyer creates a legal problem for the buyer and potentially for you if authorities later question the transaction.
What private sellers can and cannot do in Texas:
- Can sell to a licensed secondary metal recycler with documentation: legal
- Can sell to a neighbor or friend: illegal (buyer is not licensed)
- Can list on an online platform and ship to another state: complex; destination state law applies
- Can keep the converter for personal use or reinstall it: legal
- Can give it away: legal, though documentation still protects all parties
- Can take it to a licensed auto parts recycler for core credit: legal in some contexts
The practical implication: if you’ve removed a converter from your vehicle during a repair, your only legal path to converting it to cash in Texas is a licensed secondary metal recycler with full paperwork.
Penalty for Selling Stolen Catalytic Converter in Texas
The penalty for selling a stolen catalytic converter in Texas depends on the value of the property involved and whether the offense is connected to organized criminal activity. Penalties range from a state jail felony to a first-degree felony carrying potential life imprisonment.
Under Texas Penal Code Chapter 31, theft of a catalytic converter is classified by the value of the stolen property. Catalytic converters from common passenger vehicles can be worth $200 to $1,500 in scrap value, while converters from hybrid vehicles and trucks can be worth $1,000 to $3,500 or more. The theft classification follows standard theft thresholds.
Selling a stolen converter is treated as theft by receiving under Texas Penal Code Section 31.03 when the seller knew or should have known the property was stolen. The punishment follows the same value-based ladder as direct theft.
| Value of Stolen Property | Offense Level | Penalty Range |
|---|---|---|
| Less than $100 | Class C misdemeanor | Fine up to $500 |
| $100 to $749 | Class B misdemeanor | Up to 180 days jail, $2,000 fine |
| $750 to $2,499 | Class A misdemeanor | Up to 1 year jail, $4,000 fine |
| $2,500 to $29,999 | State jail felony | 180 days to 2 years, $10,000 fine |
| $30,000 to $149,999 | Third-degree felony | 2 to 10 years, $10,000 fine |
| $150,000 or more | Second-degree felony | 2 to 20 years, $10,000 fine |
| Organized crime involvement | First-degree felony | 5 to 99 years or life, $10,000 fine |
The organized crime enhancement is significant. Texas Penal Code Section 71.02 covers organized criminal activity. Theft ring members who aggregate stolen converter values across multiple thefts can face first-degree felony charges with life imprisonment as a potential sentence.
What Happens If You Sell a Stolen Catalytic Converter?
If you sell a stolen catalytic converter in Texas, you face criminal charges under both the theft statutes and the HB 4700 documentation requirements, and the statewide transaction database makes it significantly easier for law enforcement to trace the sale back to you. The consequences are serious and increasingly likely to materialize.
The transaction database created by HB 4700 is the key enforcement tool. When a catalytic converter theft is reported, investigators check the database for recent converter sales with documentation matching the stolen vehicle. If your ID appears in a record connected to a converter from a vehicle reported stolen, you’re the primary suspect with a documented transaction trail.
Even if you genuinely did not know the converter was stolen, selling it without the required documentation is itself a felony. The lack of documentation does not help your defense; it adds an additional charge.
What typically happens after selling a stolen converter:
- Law enforcement receives a theft report from a vehicle owner
- Investigators check the statewide converter purchase database
- If seller documentation exists, it is compared to the theft report details
- A warrant may be issued for the seller’s arrest
- Charges filed include theft by receiving and HB 4700 documentation violations
- If cash was used, the buyer faces additional charges under HB 4700
- Organized crime enhancement possible if multiple transactions are involved
The database has made Texas one of the harder states in which to profit from catalytic converter theft without immediate legal exposure. Sellers who try to avoid the database by selling to unlicensed buyers simply add the buyer’s crime to their own.
Key Takeaway: Selling a stolen catalytic converter in Texas creates a documented criminal trail through the HB 4700 database, and charges can escalate to first-degree felony level when organized criminal activity is involved.
Is It Illegal to Remove a Catalytic Converter in Texas?
Removing a catalytic converter from a vehicle you own is not illegal in Texas under state criminal law. The criminal prohibition in Texas targets theft of converters from other people’s vehicles, not the act of removal from your own property.
That said, removing a catalytic converter from a vehicle that operates on public roads creates a separate legal problem under federal environmental law. The EPA Clean Air Act Section 203 makes it illegal to remove or render inoperative any emission control device on a motor vehicle intended for use on public roads. Catalytic converters are emission control devices.
The EPA’s restriction applies to commercial shops primarily. A shop that removes a working catalytic converter during service and replaces it with a gutted or absent unit is violating federal law. Private individuals who modify their own vehicles occupy a narrower gray area, but using a modified vehicle on public roads remains a legal risk.
Texas removal law summary:
- Removing from your own vehicle: not a Texas criminal offense
- Removing from someone else’s vehicle: theft (Texas Penal Code 31.03)
- Operating on public roads without one: potential EPA Clean Air Act violation
- Shop removing a customer’s converter: federal EPA violation if done for road use
- Off-road-only vehicles: different analysis; converter not required for non-road use
Texas does not have state emissions testing for most counties. Houston, Dallas, and other major metropolitan areas participate in emissions testing programs under the Texas Commission on Environmental Quality (TCEQ), but the testing requirements vary by county and vehicle age.
Is It Illegal to Not Have Catalytic Converters?
Not having a catalytic converter on a vehicle driven on public roads is a violation of federal EPA Clean Air Act regulations, even in Texas, where most counties do not conduct emissions testing. Federal law prohibits operating a vehicle with tampered or missing emission control devices on public roads.
EPA Clean Air Act Section 203(a)(3) specifically prohibits removing or rendering inoperative any device or element of design installed on a motor vehicle in compliance with emissions regulations. The catalytic converter is one of those devices. The penalty for an individual violation under Section 205 can reach $44,539 per violation as of recent EPA civil penalty adjustments.
Texas’s county-by-county emissions testing program means many Texas drivers are practically unlikely to face testing that would reveal a missing converter. Counties participating in Texas’s I/M program include Harris County (Houston), Dallas County, Tarrant County (Fort Worth), Bexar County (San Antonio), and El Paso County. Vehicles in those counties are subject to emissions inspections where a missing converter would fail the test.
| Texas County | Emissions Testing Required? | Missing Converter Result |
|---|---|---|
| Harris (Houston) | Yes | Fail; cannot register vehicle |
| Dallas | Yes | Fail; cannot register vehicle |
| Tarrant (Fort Worth) | Yes | Fail; cannot register vehicle |
| Bexar (San Antonio) | Yes | Fail; cannot register vehicle |
| Travis (Austin) | Yes | Fail; cannot register vehicle |
| Most rural Texas counties | No | No testing; federal rule still applies |
The federal prohibition applies regardless of whether your county tests. The practical enforcement gap in non-testing counties is real, but the legal obligation exists statewide.
Is It Legal to Drive Without a Catalytic Converter?
Driving without a catalytic converter on public roads is illegal under federal EPA regulations regardless of which state you live in. The EPA Clean Air Act Section 203 prohibition applies nationwide, and driving a modified vehicle on public roads violates it.
Texas does not have a statewide emissions test requirement for all counties, which means a missing converter may not be detected during a state safety inspection in many parts of Texas. But the absence of a state-level enforcement mechanism does not make the conduct legal. Federal law applies independently of state enforcement.
Police officers who observe a vehicle with an obviously modified exhaust system can issue a citation. In major Texas metros, law enforcement is more aware of converter removal because of the theft epidemic, and vehicles with obviously modified exhaust systems attract more attention.
The legal reality of driving without a converter:
- Federal EPA violation under Clean Air Act Section 203
- Potential civil penalty up to $44,539 per violation
- State emissions test failure in participating Texas counties
- Vehicle registration denial after a failed emissions test
- Possible police citation in high-enforcement areas
- Insurance complications if an accident occurs in a non-compliant vehicle
The practical risk in rural Texas counties with no emissions testing is lower than in Houston or Dallas, but the legal exposure exists everywhere. Driving daily on a federal violation is a risk most people would prefer to avoid once they understand what it actually means.
Is It Legal to Sell Catalytic Converters?
Selling catalytic converters is legal nationally, but every state now has some form of regulation governing the sale, and the rules vary significantly. Texas has some of the strictest requirements in the country following HB 4700, while other states operate under lighter frameworks.
At the federal level, there is no specific prohibition on selling a legitimately owned catalytic converter. The federal interest is in preventing trafficking of stolen converters across state lines, which can trigger the federal Interstate Transportation of Stolen Property (ITSP) Act under 18 U.S.C. Section 2314 when stolen goods worth $5,000 or more cross state lines.
Several other states have enacted legislation similar to Texas HB 4700. California, Georgia, Minnesota, and Illinois all passed catalytic converter-specific legislation between 2021 and 2024. The common elements across these laws include documentation requirements, payment traceability rules, and record-keeping mandates.
| State | Legislation | Key Requirements | Cash Ban? |
|---|---|---|---|
| Texas | HB 4700 (2023) | ID, VIN, proof of ownership, licensed buyer | Yes |
| California | AB 1740 (2022) | ID, VIN, licensed dealer only | Yes |
| Georgia | HB 1221 (2022) | ID, proof of ownership, photo of converter | Yes |
| Minnesota | HF 1848 (2023) | Documentation, electronic payment | Yes |
| Illinois | SB 2377 (2022) | ID, VIN, licensed recycler | Yes |
The national trend is clearly toward tighter regulation. States that have not yet enacted converter-specific legislation are likely to do so as theft numbers in those states justify legislative action.
Catalytic Converter Theft Laws by State
Catalytic converter theft laws now exist in at least 30 states, with most major legislation passed between 2021 and 2024 in response to a dramatic national increase in theft rates. The specific requirements vary, but documentation, payment traceability, and licensing requirements are the common elements.
The states with the most aggressive enforcement frameworks as of 2026 are Texas, California, Georgia, Minnesota, and Illinois. These states combine strict buyer licensing requirements with seller documentation mandates, payment traceability rules, and law enforcement database reporting. Violations in these states carry felony-level penalties.
States with lighter regulation include parts of the Southeast and Mountain West, where theft rates have been lower or legislative action has been slower. However, even in less-regulated states, general theft statutes apply to stolen converters, and federal interstate trafficking law covers cross-state movement of stolen property.
National trends in catalytic converter theft law:
- At least 30 states have passed converter-specific legislation as of 2026
- Common elements: ID requirements, VIN documentation, licensed buyer requirements
- Cash payment prohibitions are becoming the national standard
- Law enforcement databases for converter transactions are expanding
- Federal legislation has been proposed but not enacted as of 2026
- The National Motor Vehicle Title Information System (NMVTIS) is increasingly referenced in state laws
The patchwork of state laws creates complexity for anyone in the scrap metal or auto recycling business who operates across state lines. A purchase that is legal in one state may be a felony in another, and transporting converters across state lines triggers federal ITSP analysis on top of the state-level rules.
Frequently Asked Questions
Is it illegal to sell a catalytic converter in Texas without documentation?
Yes, selling a catalytic converter in Texas without the required documentation is a criminal offense under HB 4700.
Sellers must provide a government-issued photo ID, proof of vehicle ownership, and the VIN of the vehicle the converter came from.
Buyers who accept a converter without these documents face a state jail felony charge, and sellers who provide false documentation face additional criminal exposure.
The law has been in full effect since September 1, 2023, with no grandfathering exceptions for pre-existing inventory.
What documentation do you need to sell a catalytic converter in Texas?
You need three things to legally sell a catalytic converter in Texas: a government-issued photo ID, proof of vehicle ownership, and the vehicle identification number of the vehicle the converter came from.
Acceptable proof of ownership includes the vehicle title, current registration, or insurance documentation in your name.
If you are not the vehicle owner but removed the converter during a repair, you must also have written authorization from the vehicle owner.
All documents are verified, recorded, and submitted to a statewide law enforcement database by the buyer.
Can a private person legally sell a used catalytic converter in Texas?
A private person can legally sell a used catalytic converter in Texas, but only to a licensed secondary metal recycler with full documentation provided.
Private-to-private sales of catalytic converters are not legal in Texas because the buyer in that arrangement is not a licensed secondary metal recycler.
Cash payments are prohibited; the buyer must pay by check, money order, or electronic transfer.
A private seller who meets all documentation requirements and sells to a licensed buyer is completing a fully legal transaction.
What is the penalty for selling a stolen catalytic converter in Texas?
The penalty depends on the value of the converter and whether organized criminal activity is involved.
For converters valued between $2,500 and $29,999, the charge is a state jail felony carrying 180 days to 2 years in state jail and a fine up to $10,000.
If organized criminal activity is involved, the charge can escalate to a first-degree felony with a potential sentence of 5 to 99 years or life imprisonment.
Selling without required documentation adds a separate state jail felony charge on top of the theft-related offense.
Is it legal to drive a car without a catalytic converter in Texas?
Driving without a catalytic converter on public roads is a violation of federal EPA Clean Air Act Section 203 regardless of state.
Texas does not require emissions testing in all counties, so a missing converter may not be detected during a routine state inspection in many parts of Texas.
In Harris, Dallas, Tarrant, Bexar, and Travis counties, vehicles without converters will fail the required emissions inspection and cannot be registered.
The federal civil penalty for operating a vehicle with tampered emission controls can reach $44,539 per violation under current EPA penalty schedules.
Catalytic converter law in Texas moved fast between 2022 and 2024, and the rules are stricter than most people realize. Whether you’re a vehicle owner with a removed converter, a scrap dealer, or a mechanic wondering about your shop’s obligations, the HB 4700 framework applies to everyone in the transaction chain.
Bookmark this page for 2026 reference and share it with anyone in the auto recycling, scrap metal, or vehicle repair industry in Texas. The penalties are severe enough that staying current on these rules is not optional.
