Valved Exhaust System for Mercedes-Benz C400 W205 / S205 / C205 / A205 V6 (2015-2018)
Configuration
Mercedes-Benz C400 W205 / S205 / C205 / A205 Valved Exhaust System (2015-2018)
Valves
Operated by remote control, factory-paired.
Estimated at 0.50 m from the outlet, 45°, 2,000 rpm with a warm engine. Allow ± 2 dB depending on the engine and measuring point. A 3 dB difference is audible in a direct comparison; 10 dB sounds roughly twice as loud.
Configuration guide
Sound intensity with the valves open, on a scale of 0 to 10.
| Configuration | Intensity |
|---|---|
| Decat downpipe + Rog cat-back | 10/10 |
| 100-cell sports catalytic converter + Rog cat-back | 9/10 |
| 200-cell sports catalytic converter + Rog cat-back | 8/10 |
| Rog cat-back only, factory catalytic converter retained | 7/10 |
| Factory exhaust, for comparison | 3/10 |
The Mercedes-Benz C400 W205 / S205 / C205 / A205 exhaust in detail.
Understated in its looks, the 2015-2018 C400 W205 hides a 333 hp, 480 Nm twin-turbo V6 with direct injection: thick torque, available early, giving the C-Class the roll-on pace of a sports car. Nothing in its silhouette or its sound gives it away, and that is precisely the problem.
This V6 has a deeper, more robust voice than the four-cylinders in the range, with a grain that hardens under load. The factory exhaust, true to the C-Class philosophy of comfort, neutralizes it. With the valves open, the Rog cat-back reveals it: an assertive start-up, full-bodied acceleration, emphasized pick-up. With the valves closed, the sedan regains its restraint over long distances.
This valved system is built to your VIN, then fitted without welding, using clamps and gaskets, in about two hours. It uses the factory valve control if the car has one, otherwise it comes with the Rog remote. The page is for the C400; the C450 is not included, and the C200, C300, C43 and C63 of the W205 generation each have their own page.
On this twin-turbo, the “Manifold” option replaces the catalyzed downpipe that follows the turbos. On the C400, three levels: 200 cells, which preserve emissions control and suit the road; 100 cells, whose acceptance depends on the car and the rules in your country; and finally the decat version, reserved for track use. Extra power only comes with an ECU remap. 304 stainless steel for robustness, titanium for around 40% less weight and its three finishes.
Mercedes-Benz C400 W205 / S205 / C205 / A205 V6 exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis codes | Mercedes-Benz C400 4MATIC W205 sedan, S205 wagon, C205 coupé and A205 convertible |
| Engine | Twin-turbo direct-injection V6, 333 hp and 480 Nm |
| Years | 2015-2018 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if the car has it, otherwise the Rog remote |
| Front section (option) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| Fitting | Clamps and gaskets, no welding, about 2 hours |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Mercedes-Benz C400 W205 / S205 / C205 / A205 V6 exhaust.
Does the system designed for the C400 W205 fit a C450 AMG?
No, our page names only the C400 W205 and excludes the C450. The C43 AMG and C63 of the same generation have their own page. To remove any doubt, send us your VIN before ordering.
What does a remapped C400 W205 gain?
The C400’s Stage 2 table states 420 hp and 600 Nm, against 333 hp and 480 Nm as standard, provided you combine the downpipe with a full ECU remap. The cat-back alone makes do with the factory map and only affects the sound and the weight.
C400 W205: what should I know before vehicle inspection?
Presented with the valves closed, it stays as sober as a standard sedan. The factory emissions control remains with the cat-back alone or the 200-cell downpipe. For the 100-cell version, the decision lies with the inspector depending on the vehicle and the country; the decat version is reserved for track use.
Does the C400 stay comfortable on long journeys?
Yes, the sedan keeps its touring manners: with the valves shut, the muffler absorbs the flow and no drone sets in at a steady speed.
Sedan, wagon, coupé or convertible: does the C400 W205 take the same system?
Yes. The W205 sedan, the S205 wagon, the C205 coupé and the A205 convertible take the same Rog system: same chassis, same V6, same clamp-and-gasket fitting. Your VIN is only used to confirm the version and model year before manufacturing.
Rog expert guide
Mercedes-Benz C400 W205 / S205 V6: the C-Class that raises its voice, the exhaust system guide
The 2015 Mercedes-Benz C400 W205 / S205 holds a special place in the C-Class range: a 333 hp, 480 Nm biturbo V6 under the hood of a sober, elegant sedan. Power to spare, but a sound that the factory exhaust...
In detail
Rog Advisor
A question about this exhaust?
Fitment, sound, catalyst, valves, delivery: the answer comes straight away, with your configuration in context.
The Rog Advisor is an automated assistant trained on our product pages and answers. For an important decision, write to us: we confirm by e-mail.
Unsure about your configuration? Talk to us before you order. We know your car. Write to us at contact@rogmotorsport.com: we reply in writing, in English, within 24 hours. Email us
Your country
Rog in Canada.
Inspections in Canada
A Rog cat-back leaves your factory catalytic converter, oxygen sensors and OBD untouched, and valves closed, your car sounds very close to stock at a safety inspection. Sport cats follow your province's rules, the catless version is for the track only, and your province decides.
On the road
Valves closed around town, your car sounds very close to stock, and you open them whenever you like.
Your documents
Each system is built from the VIN on your vehicle registration, and we send its technical documentation free on request, for an inspection or for your insurer.
Your insurance
Tell your insurer before installation: our free technical documentation makes it easy.
Reviews imported from our previous system and translated from French; verified purchases carry the badge.
Rog presentation film: choosing your vehicle, Standard or Equal Length design, stainless steel or titanium, Z-Pipe, controlled valves, titanium and tip finishes, and support from choosing your configuration through to shipping.
THE Rog CRAFT
Our process.
From the first bend to the last check. The same care at every step.
-
Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
-
Manufacture
Crafted with precision.
Tube bending, part fitting and TIG welding: every joint receives the same care.
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Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
-
Assembly
Every part in its place.
Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
Check. Then approve.
Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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Shipping
Ready to join you.
Reinforced packaging protects your exhaust in transit. The final step before giving your vehicle a new voice.
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