Introduction: What Is IRS Form 6197?

IRS Form 6197, titled Gas Guzzler Tax, is an official federal excise tax calculation schedule published by the Internal Revenue Service (IRS) and the Department of the Treasury. It is governed under Section 4064 of the Internal Revenue Code (IRC), which was originally established under the Energy Tax Act of 1978.

This form is used by automobile manufacturers and vehicle importers to compute the federal excise tax imposed on the sale, lease, or first personal/business use of passenger cars that fail to meet statutory fuel economy standards. The tax is triggered when a passenger automobile has a combined Environmental Protection Agency (EPA) fuel economy rating of less than 22.5 miles per gallon (MPG).

Form 6197 is not a standalone return; it serves as the supporting calculation schedule for Form 720 (Quarterly Federal Excise Tax Return), where the final tax liability is reported under IRS No. 40.

Purpose of the Form

The Gas Guzzler Tax was enacted by Congress to discourage the production, importation, and purchase of fuel-inefficient passenger automobiles and to promote national energy conservation. The policy applies a sliding-scale tax: the lower the vehicle’s fuel efficiency, the higher the federal excise tax.

Form 6197 provides the structured rate table needed to calculate this tax. Depending on the vehicle’s combined fuel economy rating, tax rates range from $1,000 up to $7,700 per vehicle.

The form captures model identification details (make, model year, and vehicle identification numbers), computes total tax liabilities across multiple fuel economy tiers, and transfers the final liability to Form 720 for payment to the U.S. Treasury.

Who Needs to File This Form

Form 6197 must be completed by businesses or individuals responsible for introducing fuel-inefficient passenger automobiles into the U.S. market. You are required to file Form 6197 if you are:

Domestic Automobile Manufacturers: Vehicle manufacturers that produce and sell, lease, or first use passenger cars in the United States with a combined EPA rating below 22.5 MPG.
Commercial Vehicle Importers: Dealerships, automotive brokers, or businesses that import foreign-manufactured passenger automobiles with fuel economy ratings under 22.5 MPG for resale or commercial leasing.
Individual Importers: Individuals who import a foreign passenger car (such as a classic sports car or luxury grand tourer) for personal or business use that does not meet the 22.5 MPG standard.
Vehicle Lengtheners / Modifiers: Vehicle converters who modify passenger automobiles, unless they qualify under specific small manufacturer exemptions.

Who Is Exempt / Not Required to File

Many vehicle sales and automotive categories are completely exempt from the Gas Guzzler Tax. You do not need to file Form 6197 under the following circumstances:

Vehicles Rated 22.5 MPG or Higher: Passenger cars that meet or exceed the combined EPA fuel economy threshold of 22.5 MPG are subject to zero tax.
Light Trucks, SUVs, Minivans, and Pickups: Under IRC Section 4064(b)(1) and EPA regulations, non-passenger vehicles—including sport utility vehicles (SUVs), pickup trucks, passenger vans, and cargo vans—are classified as light trucks and are legally exempt from the tax, regardless of their fuel economy.
Emergency Vehicles: Vehicles equipped for emergency duty, such as police cars, firefighting vehicles, and ambulances, are exempt under Section 4064(b)(1)(C).
Vehicles Sold for Export: Automobiles sold directly for export or shipped to foreign countries under Section 4221.
Small Lengtheners: Small manufacturers who lengthen existing automobiles (such as limousine converters) and produce fewer than 10,000 units annually.

When to File

Form 6197 follows the standard quarterly excise tax calendar tied to Form 720:

Quarterly Filing Deadlines:
- Quarter 1 (Jan – Mar): Due on or before April 30th.
- Quarter 2 (Apr – Jun): Due on or before July 31st.
- Quarter 3 (Jul – Sep): Due on or before October 31st.
- Quarter 4 (Oct – Dec): Due on or before January 31st of the following year.
One-Time Filing for Individuals: Individuals who import a gas-guzzling automobile for personal use and are not regular Form 720 filers can make a one-time filing of Form 720 and Form 6197 by the last day of the month following the quarter in which the vehicle was imported.
Semi-Monthly Deposit Rules: Large manufacturers and regular importers with substantial excise liabilities must make semi-monthly tax deposits via EFTPS rather than waiting for quarterly filing deadlines.

Where and How to File

Form 6197 is submitted as an attachment to Form 720:

Electronic Filing: Most corporate and excise tax preparation software platforms allow you to e-file Form 6197 alongside Form 720 through the IRS Modernized e-File (MeF) system.
Paper Filing: If filing on paper, attach Form 6197 directly to your completed Form 720 and mail the package to the designated IRS address as per official Form 720 instructions (Department of the Treasury, Internal Revenue Service, Ogden, UT).

Step-by-Step Instructions to Fill Form 6197

Form 6197 consists of two primary sections: Part I calculates the tax across statutory MPG brackets, and Part II itemizes the specific vehicle models subject to the tax.

Section / Line	Combined EPA Fuel Economy Rating	Tax Rate per Vehicle
Line 1	At least 22.5 MPG	$0 (No Tax)
Line 2	At least 21.5 but less than 22.5 MPG	$1,000
Line 3	At least 20.5 but less than 21.5 MPG	$1,300
Line 4	At least 19.5 but less than 20.5 MPG	$1,700
Line 5	At least 18.5 but less than 19.5 MPG	$2,100
Line 6	At least 17.5 but less than 18.5 MPG	$2,600
Line 7	At least 16.5 but less than 17.5 MPG	$3,000
Line 8	At least 15.5 but less than 16.5 MPG	$3,700
Line 9	At least 14.5 but less than 15.5 MPG	$4,500
Line 10	At least 13.5 but less than 14.5 MPG	$5,400
Line 11	At least 12.5 but less than 13.5 MPG	$6,400
Line 12	Less than 12.5 MPG	$7,700
Line 13	Total Tax Due for the Quarter	Sum of Lines 2 through 12 (Transferred to Form 720, IRS No. 40).

Part I: Computing Quarterly Tax Due

For each MPG bracket (Lines 2 through 12), enter the total number of vehicles sold, leased, or first used during the quarter in Column (c). Multiply the number of vehicles by the statutory tax rate in Column (d) to calculate the tax due in Column (e). Sum all amounts on Line 13 and transfer this figure to Form 720 on the line for IRS No. 40.

Part II: Model Identification

Part II requires you to identify the specific vehicles behind your Part I calculations. List the corresponding line number from Part I, the exact EPA fuel economy rating, the number of vehicles, and the make, model name, and model year for each vehicle type.

Required Documents and Information Needed Before Filling

Before completing Form 6197, assemble the following automotive and importation records:

Official EPA Fuel Economy Ratings: The unadjusted combined fuel economy rating certified by the EPA (or published in the annual EPA Fuel Economy Guide).
Sales and Production Records: Commercial invoices, lease agreements, and delivery logs showing the exact date of first sale, lease, or company use.
Customs Importation Paperwork (for Importers): U.S. Customs and Border Protection Entry Summary (CBP Form 7501), EPA Form 3520-1, and DOT Form HS-7.
Vehicle Identification Data: Make, model name, model year, and Vehicle Identification Numbers (VINs) for all taxable cars.

Common Mistakes to Avoid

Applying the Tax to SUVs and Trucks: Attempting to calculate gas guzzler tax on pickup trucks, SUVs, or commercial vans. The tax applies strictly to passenger automobiles.
Using Window Sticker MPG Instead of Combined Rating: Using the consumer window sticker MPG (which is adjusted for real-world driving) instead of the official unadjusted EPA combined 55/45 city/highway rating.
Importers Forgetting One-Time Filings: Individuals importing high-performance European or Japanese sports cars for personal use failing to file Form 720 and Form 6197 upon entry.
Missing Quarterly Deadlines: Forgetting to file Form 6197 with quarterly Form 720 returns, triggering failure-to-file excise penalties.
Failing to Transfer Line 13 to Form 720: Completing Form 6197 but neglecting to enter the total liability on the line for IRS No. 40 on Form 720.

Penalties and Compliance Risks

Failing to report or pay the Gas Guzzler Tax leads to severe excise tax penalties and interest charges under the Internal Revenue Code:

Failure-to-File Penalties: Under IRC Section 6651, failing to file Form 720 and Form 6197 on time incurs a penalty of 5% per month (up to 25%) of the unpaid tax.
Failure-to-Pay Penalties: Unpaid excise taxes accrue a penalty of 0.5% per month (up to 25%), plus daily compounding statutory interest from the original due date.
Failure-to-Deposit Penalties: Large manufacturers that fail to make required semi-monthly electronic deposits through EFTPS face penalties of up to 10% under IRC Section 6656.
Criminal Penalties: Willful failure to report or pay excise taxes can lead to criminal prosecution under IRC Section 7201 and Section 7203.

Related Forms and Schedules

When computing, reporting, and paying federal excise taxes on automobiles, filers coordinate with these related documents:

Form 720: Quarterly Federal Excise Tax Return (where the Gas Guzzler Tax is reported under IRS No. 40).
Form 720-X: Amended Quarterly Federal Excise Tax Return (used to adjust prior-period excise filings).
Form 8849: Claim for Refund of Excise Taxes (used to claim refunds on overpaid excise taxes).
CBP Form 7501: Entry Summary (filed with U.S. Customs and Border Protection for imported vehicles).
EPA Form 3520-1: Importation of Motor Vehicles and Motor Vehicle Engines Subject to Federal Clean Air Act Regulations.

Frequently Asked Questions (FAQs)

1. What vehicles are subject to the Gas Guzzler Tax on Form 6197?

The tax applies exclusively to passenger automobiles (sedans, coupes, hatchbacks, and station wagons) with an EPA combined fuel economy rating of less than 22.5 MPG. It does not apply to SUVs, pickup trucks, or minivans.

2. Who actually pays the Gas Guzzler Tax?

The tax is paid directly to the IRS by the vehicle manufacturer or importer upon the first sale, lease, or use of the automobile. While manufacturers typically factor the tax into the vehicle’s retail price (MSRP), the legal liability rests on the manufacturer or importer.

3. Can an individual importing a car file Form 6197 without an EIN?

Yes. An individual who imports a single gas-guzzling vehicle for personal use and does not operate a commercial importing business can make a one-time filing of Form 720 and Form 6197 using their Social Security Number (SSN).

4. What is the maximum Gas Guzzler Tax per car?

The maximum tax is $7,700 per vehicle, which applies to any passenger automobile with an EPA combined fuel economy rating of less than 12.5 MPG.

5. Why are pickup trucks and SUVs exempt from the Gas Guzzler Tax?

When Congress passed the Energy Tax Act of 1978, light trucks and SUVs were primarily used for agricultural and commercial work. As a result, the statute explicitly exempted non-passenger vehicles, and that statutory exemption remains in place today.

6. How do I determine a vehicle’s official fuel economy rating for Form 6197?

You must use the unadjusted combined fuel economy rating calculated by the EPA (55% city driving cycle and 45% highway driving cycle), which is published annually in the EPA Fuel Economy Guide.

Conclusion

IRS Form 6197 is the central calculation schedule for federal Gas Guzzler Tax compliance, ensuring that manufacturers and importers accurately compute excise taxes on fuel-inefficient passenger cars. By applying tiered tax rates between $1,000 and $7,700 per vehicle, the form operationalizes federal energy conservation policy under IRC Section 4064.

To avoid costly late-filing fines and deposit penalties, verify official EPA combined fuel ratings, ensure non-passenger vehicles are properly exempted, itemize vehicle models in Part II, and transfer your total tax liability to Form 720 for timely quarterly submission.

IRS Form 6197 Guide: Gas Guzzler Tax Rules & Calculations