Is a cat-back exhaust legal in Ontario? Canada, province by province.

Updated October 30, 2026.

A cat-back exhaust leaves your factory catalytic converter, oxygen sensors and on-board diagnostics exactly as they are, and with a Rog valved system, valves closed, your car sounds very close to stock, around town and at a safety inspection. Valves open, it has the voice you chose for it. If you replace the front section too, our 200-cell sport catalytic converter keeps emissions control. Each system is built from your VIN, from a 3D scan of the chassis and of the original system, and bolts onto the original mounting points with no welding. Free technical documentation for your paperwork, a 3-year warranty and free shipping, with duties and taxes included in the price.

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Contents 6

1. Inspections in Ontario and Quebec: how they work.
2. The rules, in short.
3. Find the exhaust for your car.
4. Frequently asked questions.
5. Write to us.
6. Sources.

Inspections in Ontario and Quebec: how they work.

• No periodic inspection for a passenger car in Ontario or in Quebec. In Ontario, a Safety Standards Certificate is needed when you transfer a used vehicle to a new owner or register a vehicle from another province or country; it is valid for 36 days. In Quebec, a one-time mechanical inspection applies in specific cases, such as a vehicle from outside Quebec or a rebuilt vehicle.
• No emissions test in Ontario: the Drive Clean test for light passenger vehicles ended on April 1, 2019. Emission control systems must still be present and operating, and a cat-back leaves them as they are.
• A clear figure in Toronto: for a stationary vehicle, the noise bylaw (Chapter 591) sets 92 dB(A) at idle and 96 dB(A) at any higher engine speed, measured at least 50 cm from the exhaust outlet. Valves closed, your car stays very close to stock.
• Fitting: the system bolts onto the original mounting points, with no welding.

The rules, in short.

Rog exhausts carry no certification of their own: that is a choice, because a certified system sounds almost like stock, and the valves give you both. In Ontario, the Highway Traffic Act (section 75(1)) asks for a muffler in good working order and in constant operation to prevent excessive or unusual noise, and bans a muffler cut-out, straight exhaust, gutted muffler, by-pass or similar device; British Columbia (Motor Vehicle Act Regulations, section 7.03) and Alberta (Vehicle Equipment Regulation, section 61) have similar muffler rules. In Quebec, sections 258 and 260 of the Highway Safety Code require an exhaust system that meets the standards set by regulation and forbid reducing its efficiency; the Sûreté du Québec reads them as covering a muffler modified to increase engine noise. Valves closed, your car sounds close to stock; on the road, the officer decides.

On emissions, a cat-back leaves the factory system alone. For a sport catalytic converter, the rules depend on your province; the catless version is for track use only. In Quebec, the SAAQ states that a passenger vehicle can be modified for looks or to improve its performance, as long as the modification respects the law, and suggests asking it before modifying a car: the SAAQ decides. Tell your insurer before fitting. Everywhere else, your province decides.

Find the exhaust for your car.

Each product page shows the system, its options and its sound; each guide explains the configuration in detail. A few examples:

• Ford Mustang GT S550 (2018-2020): the exhaust and the guide.
• Honda Civic Type R FL5: the exhaust and the guide.
• Subaru WRX VB: the exhaust and the guide.
• BMW M3 / M4 G80 / G82: the exhaust and the guide.
• Toyota GR Supra A90 3.0: the exhaust and the guide.

Your car is not on the list? All our exhausts, by brand.

Frequently asked questions.

Valves closed, is my car quiet?
Yes: valves closed, the sound stays very close to stock, around town and at an inspection, and you open the valves when you choose. Your province decides.

Is there an emissions test in Ontario?
Not for passenger cars since April 1, 2019; emission control systems must still be present and operating. A cat-back leaves them as they are: your province decides.

Does Quebec have a mechanical inspection?
Not a periodic one for a passenger car: a one-time inspection applies in specific cases, such as a vehicle from outside Quebec, a rebuilt vehicle, or at an officer's request. Valves closed, your car stays close to stock: the SAAQ decides.

Will the system fit my car?
Yes: it is built from your VIN, from a 3D scan of the chassis and of the original system, and checked before production. It bolts onto the original mounting points with no welding, at the shop of your choice.

What happens to my catalytic converter?
With a cat-back, it stays in place. If you also replace the front section, the 200-cell sport catalytic converter keeps emissions control, and the rules depend on your province; the catless version is for track use only. Your province decides.

Does Rog provide documents?
Yes: on request, we send you the technical documentation for your system free of charge, describing your configuration, for an inspection or for your insurer. Your province decides.

Write to us.

Email us at contact@rogmotorsport.com: we reply in writing, in English or French, within 24 hours. For instant answers: the Rog Advisor and our FAQ.

As set out in our terms and conditions of sale, it is up to each buyer to check the rules in their province.

Sources.

1. Ontario Highway Traffic Act, section 75 (text reproduced by J. J. Keller), accessed October 29, 2026: https://jjkellercompliancenetwork.com/regsense/details/W106002-1345048607903
2. Environmental Registry of Ontario, Drive Clean decision, accessed October 29, 2026: https://ero.ontario.ca/node/478
3. Ontario, "Safety standards certificate", accessed October 29, 2026: https://www.ontario.ca/page/safety-standards-certificate
4. City of Toronto, noise bylaw enforcement, accessed October 29, 2026: https://www.toronto.ca/city-government/public-notices-bylaws/bylaw-enforcement/noise/
5. City of Toronto, Municipal Code Chapter 591, Noise, accessed October 29, 2026: https://www.toronto.ca/legdocs/municode/1184_591.pdf
6. SAAQ, vehicles subject to a mechanical inspection, accessed October 29, 2026: https://saaq.gouv.qc.ca/immatriculation/vehicule-verification-mecanique/vehicules-vises
7. SAAQ, modified cars, accessed October 29, 2026: https://saaq.gouv.qc.ca/vehicule-artisanal-modifie-reconstruit/auto-modifiee
8. MRC Brome-Missisquoi and Sûreté du Québec, press release on muffler checks in Sutton (Highway Safety Code, sections 258 and 260), July 4, 2023, accessed October 29, 2026: https://sutton.ca/wp-content/uploads/2023/07/Communique-de-presse-Operation-silencieux-de-motos-a-Sutton.pdf
9. British Columbia, Motor Vehicle Act Regulations, section 7.03, accessed October 29, 2026: https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/26_58_04
10. Alberta, Vehicle Equipment Regulation (AR 122/2009), section 61, accessed October 29, 2026: https://kings-printer.alberta.ca/documents/Regs/2009_122.pdf

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