If you are shopping for Mercedes E63 downpipes, start by confirming the chassis before anything else. The AZ Motorsport Mercedes E63 S W213 downpipes are listed for 2018–2023 Mercedes-AMG E 63 S 4MATIC+ Sedan (W213) and Wagon (S213) models with the M177 engine, not for the older W212 generation. Before ordering, plan for fitment verification, tune/CEL expectations, catted vs catless use case and local road-use rules in Canada.
Quick answer: what to confirm before ordering W213 E63 downpipes
| Decision point | What to check | Why it matters |
|---|---|---|
| Chassis generation | Confirm W213 sedan or S213 wagon, not W212 | E63 downpipes are generation-specific and the wrong chassis can mean the wrong part |
| Model/year | Confirm 2018–2023 E 63 S 4MATIC+ if using the AZM product page | AZM's current E63 S W213 downpipe listing is built around this fitment |
| Engine | Confirm the M177 E63 S platform | Fitment, O2 sensor placement and turbo/downpipe layout depend on the engine/chassis combination |
| Catted vs catless | Choose high-flow catted or race/catless based on use case | This affects sound, smell, CEL risk, tune planning and road-use suitability |
| Tune/CEL planning | Ask your tuner and installer before install day | Downpipes can trigger catalyst-efficiency faults, especially with catless setups |
| Exhaust pairing | Confirm whether the downpipes will connect to the factory or aftermarket exhaust | AZM lists compatibility with factory and many aftermarket systems where applicable, but the exact combination still needs confirmation |
| Canada/Quebec use | Review local laws and intended vehicle use | AZM marks this product as off-road/race-use only and not emissions-compliant for public-road use |
Relevant AZM page: Mercedes E63 S (W213) Downpipes: https://azmotorsport.ca/products/azm-mercedes-e63-w213-downpipes
Why W213 fitment is the first question
The phrase "Mercedes E63 downpipes" sounds simple, but E63 buyers are often comparing multiple generations. W213 and W212 E63 downpipes should not be treated as interchangeable. If the car is a W213 sedan or S213 wagon, the next checks are model year, E63 S trim, M177 engine and the exact product listing. If the car is a W212, use a separate W212-specific fitment path instead of assuming a W213 part can be adapted.
For AZ Motorsport's current W213 listing, the public product data identifies the fitment as:
- 2018–2023 Mercedes-AMG E 63 S 4MATIC+ Sedan (W213), M177
- 2018–2023 Mercedes-AMG E 63 S 4MATIC+ Wagon (S213), M177
That makes this a W213/S213 E63 S checklist, not a generic Mercedes-AMG downpipe guide and not a W212 buying guide.
W213 E63 downpipe fitment checklist
Before you order, send or confirm these details:
- Full model name: Mercedes-AMG E 63 S, not only "E-Class" or "E63".
- Model year: confirm it falls within the part's listed 2018–2023 range.
- Body style: sedan (W213) or wagon (S213).
- Engine/platform: M177 E63 S application.
- Market/version details: Canadian, US or imported vehicle if relevant.
- Existing exhaust setup: factory exhaust, aftermarket cat-back, custom section or prior modifications.
- Intended downpipe style: high-flow catted or race/catless.
- Tuning plan: stock ECU for now, tune booked, or current tuned file.
- Check-engine-light expectations: whether the tuner can support the selected setup.
- Vehicle use: closed-course/off-road use only if selecting parts marked that way.
- VIN/order confirmation: provide the VIN or full vehicle details when asking AZ Motorsport to confirm fitment.
Fitment is not the place to guess. A small wording difference in a product title can point to a different chassis, engine or install path.
Catted vs catless W213 E63 downpipes
AZM's W213 E63 product listing shows both race/catless and high-flow catted variants. The right choice depends on how the vehicle is used, how much sound and odor you are willing to accept, and how you plan to manage tuning and warning lights.
| Choice | Sound | Smell/comfort | CEL risk | Tune planning | Best-fit use case | Caution |
|---|---|---|---|---|---|---|
| High-flow catted downpipes | Louder and sharper than stock, usually less extreme than catless | Generally more daily-friendly than catless | Lower than catless, but not zero | Still discuss the setup with your tuner | Owners who want a more refined upgrade path | Do not assume legal compliance; verify local rules and product notices |
| Race/catless downpipes | Most aggressive turbo/exhaust character | More odor and more raw exhaust presence are possible | Higher catalyst-efficiency fault risk | Tuning strategy should be planned before install | Track, closed-course or off-road builds where maximum flow and sound matter | AZM marks the product for off-road/race use only, not public-road emissions compliance |
A catted setup can still require tune planning. A catless setup should be treated as a much higher-risk choice for smell, warning lights and road-use restrictions. Either way, make the decision before install day so the shop, tuner and parts order are aligned.
Do Mercedes E63 downpipes require a tune?
Do not order downpipes and assume the tuning question can be solved later. Downpipes reduce restriction in the exhaust path and can change how the ECU sees catalyst behavior, airflow and boost response. AZM describes the product as supporting stock and tuned vehicles, but the practical answer depends on the selected variant, the current calibration and the owner's CEL tolerance.
A good pre-order conversation with your tuner should cover:
- Whether the car is currently stock or already tuned.
- Whether the selected catted or catless downpipes are compatible with the planned file.
- Whether catalyst-efficiency faults are expected.
- Whether the tune is intended for performance optimization, warning-light management or both.
- Whether the car will be used only in a legal closed-course/off-road context for the selected parts.
For a broader tuning primer, AZM's Stage 2 requirements guide can be used as a supporting read: https://azmotorsport.ca/blogs/guides/stage-2-tune-requirements-supporting-mods-checklist
Will W213 E63 downpipes cause a check engine light?
They can. A check engine light is not guaranteed in every setup, and avoiding one should not be promised, especially when changing catalyst configuration. The risk is generally higher with race/catless downpipes than with high-flow catted downpipes, but catted parts can still trigger faults depending on the vehicle, sensors, software and driving conditions.
Before installation, ask the installer and tuner these questions:
- Are the oxygen sensors and extensions, if any, planned for this exact W213 E63 setup?
- Is the car staying on stock software or being tuned?
- What fault codes are common after this kind of install?
- What is the plan if the CEL appears after the first drive cycle?
- Does the selected part match the car's intended legal use?
If the answer is "we will see after install," slow down. That may be acceptable for a race build, but it is not a clean plan for a buyer expecting a predictable result.
Install checklist for Quebec, Brossard and Montreal buyers
For a local buyer near Brossard, Montreal or elsewhere in Quebec, the best order is: fitment confirmation, parts selection, tuning plan, then booking. That avoids having a car on the lift while the shop is still trying to confirm chassis details or software requirements.
Bring or send the following before the appointment:
- Year, make, model and trim.
- Sedan or wagon body style.
- VIN or registration details if fitment needs confirmation.
- Photos of any current aftermarket exhaust sections, if the car is not stock.
- Whether the car has existing ECU tuning.
- Whether you are ordering high-flow catted or race/catless downpipes.
- Your sound goal: subtle performance upgrade, aggressive AMG tone or track-focused setup.
- Your use case: street-driven, seasonal/weekend, track/closed-course or off-road build.
- Any emissions, inspection or insurance concerns you need to clarify with the appropriate local authority.
Quebec also adds practical ownership concerns. Winter storage, road salt and seasonal use matter on high-performance exhaust parts. AZM's W213 E63 downpipes are listed as 304 stainless steel, which is a useful corrosion-resistance material choice, but no exhaust part should be treated as maintenance-free in a salted winter environment.
Can E63 downpipes be paired with an aftermarket exhaust system?
The AZM product page states that the W213 E63 downpipes are compatible with the factory exhaust and many aftermarket exhaust systems where applicable. Treat that as a starting point, not a universal promise. If your E63 already has a cat-back, valve controller, custom midsection or prior fabrication, share that information before ordering.
A clean fitment conversation should answer:
- Are the current exhaust connection points still factory-style?
- Has any custom welding or cutting been done already?
- Are the factory valves and electronics still installed?
- Will the downpipes be installed with the factory exhaust or a full aftermarket system?
- Does the shop expect any extra gaskets, hardware, clamps or adjustment time?
For broader browsing, use AZM's Mercedes downpipe and exhaust collections:
- Mercedes downpipes: https://azmotorsport.ca/collections/mercedes-downpipes
- Mercedes exhaust systems: https://azmotorsport.ca/collections/mercedes-exhaust-systems
- Mercedes-Benz collection: https://azmotorsport.ca/collections/mercedes-benz
What information should you send AZ Motorsport for a fitment quote?
Send one message with the details a parts specialist needs to answer quickly:
- "I have a 2018–2023 Mercedes-AMG E 63 S" plus the exact year.
- Sedan W213 or wagon S213.
- VIN if available.
- Current exhaust setup: stock, cat-back, custom or unknown.
- Desired version: high-flow catted or race/catless.
- Current tune status and whether you already have a tuner.
- Your location in Canada or Quebec if you want local install guidance.
- Intended use, especially if the part is for closed-course/off-road use.
Contact AZ Motorsport here: https://azmotorsport.ca/pages/contact
Internal links for next steps
- Product: Mercedes E63 S (W213) Downpipes: https://azmotorsport.ca/products/azm-mercedes-e63-w213-downpipes
- Mercedes downpipes collection: https://azmotorsport.ca/collections/mercedes-downpipes
- Mercedes exhaust systems collection: https://azmotorsport.ca/collections/mercedes-exhaust-systems
- Downpipes collection: https://azmotorsport.ca/collections/downpipes
- Exhaust systems collection: https://azmotorsport.ca/collections/exhaust-systems
- Related guide: Mercedes-AMG downpipe guide: https://azmotorsport.ca/blogs/guides/mercedes-amg-downpipe-guide-e63-s63-c63-fitment-cel-tuning
- Related guide: Catted vs catless downpipe sound, smell, CEL and tune checklist: https://azmotorsport.ca/blogs/guides/catted-vs-catless-downpipe-sound-smell-cel-tune-quebec
- Related guide: Stage 2 tune requirements checklist: https://azmotorsport.ca/blogs/guides/stage-2-tune-requirements-supporting-mods-checklist
- Contact: https://azmotorsport.ca/pages/contact
FAQ
Which Mercedes E63 models do W213 downpipes fit?
For the AZ Motorsport W213 listing, the confirmed fitment is 2018–2023 Mercedes-AMG E 63 S 4MATIC+ Sedan (W213) and Wagon (S213) with the M177 engine. If you have a different year, non-S model, W212 generation or imported variant, confirm fitment before ordering.
What is the difference between W213 and W212 E63 downpipes?
W213 and W212 refer to different E-Class generations. Downpipes are built around the chassis, engine bay, turbo layout, sensor placement and exhaust connection points, so a W213 E63 downpipe should not be treated as a W212 part. Confirm the generation first, then match the product page.
Do Mercedes E63 downpipes require a tune?
They may not be mechanically impossible to install without a tune, but tune planning is strongly recommended before ordering. Downpipes can affect catalyst monitoring, boost response and performance behavior. Ask your tuner what is required for your exact W213 E63 S, selected catted/catless version and intended use.
Will E63 downpipes cause a check engine light?
They can, especially when catalyst configuration changes. Catless downpipes usually carry a higher CEL risk than high-flow catted downpipes, but no setup should be promised as CEL-free. Confirm the tuning and diagnostic plan with your installer before the parts go on the car.
Should I choose catted or catless downpipes for an E63?
Choose high-flow catted downpipes if you want a more daily-friendly path with less odor and a lower CEL risk profile. Choose race/catless only for a build where aggressive sound, maximum flow and off-road/closed-course use are the priority. Always verify local laws and product notices.
What should I confirm before ordering E63 downpipes in Canada?
Confirm chassis, year, body style, engine, existing exhaust setup, catted vs catless choice, tune plan and intended use. Also review the product's race/off-road notice and any federal, provincial or local requirements that apply to your vehicle before installing emissions-related parts.
What should I ask before installing E63 downpipes in Quebec or Montreal?
Ask whether the shop has confirmed W213/S213 fitment, whether extra hardware is needed, whether your current exhaust is stock or modified, how the CEL/tuning plan will be handled and whether the selected part matches your intended legal use. For local buyers, book the fitment and tune conversation before install day.
Can E63 downpipes be paired with an aftermarket exhaust system?
Often yes, depending on the system. AZM lists the W213 E63 downpipes as compatible with factory and many aftermarket exhaust systems where applicable, but custom exhaust work can change the connection points. Send photos and the brand/model of your current exhaust before ordering.
What information should I send AZ Motorsport for a fitment quote?
Send the year, full model, sedan or wagon body style, VIN if available, current exhaust setup, current tune status, preferred catted or catless version, location and intended use. The more complete the message, the easier it is to confirm the correct Mercedes E63 downpipes.
