Valved Exhaust System for Mercedes-AMG GLA45 X156 2.0 turbo (2015-2019)
Configuration
Mercedes-AMG GLA45 X156 Valved Exhaust System (2015-2019)
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-AMG GLA45 X156 exhaust in detail.
The AMG four-cylinder has a sharp, almost metallic voice, with a furious grain when the turbo blows hard. In the factory GLA45 X156, all that remains is a muffled hum, far from the small SUV’s performance. This page concerns the 2015 to 2019 GLA45 X156, fitted with the 2.0-litre M133: 360 hp and 450 Nm, then 381 hp and 475 Nm with the 2017 phase, always with 4MATIC drive.
With the valves open, the Rog cat-back gives the GLA45 a presence worthy of its badge: urgent acceleration, pronounced gearshifts, a climb through the revs you can follow by ear. With the valves closed, the compact SUV becomes discreet again for town. The principle is simple: a valve in the silencer that chooses the path of the gases.
Your VIN guides manufacturing; at the garage, about two hours is enough to replace the old exhaust, held by clamps and gaskets, without welding. The factory valve control is retained if the GLA has one, otherwise the Rog remote takes over. The GLA45 S H247 that followed, with the M139 engine, has a separate page, as do the A45 W176 and the CLA45 C117, which share the M133.
The M133 downpipe, offered under the “Manifold” option, is the second restriction after the silencer. Chosen with 200 cells, it keeps the SUV’s emissions control intact. More open, with 100 cells, it will be accepted or not depending on the car and the rules in your country; without a catalytic converter, the version is reserved for track use. As long as the ECU stays stock, the benefit is limited to sound and a few kilos. For an SUV that faces winter, 304 stainless steel is reassuring; titanium, around 40% lighter, comes in brushed, gold and purple.
Mercedes-AMG GLA45 X156 2.0 turbo exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicle and chassis code | Mercedes-AMG GLA45 X156, 4MATIC compact SUV |
| Engine | M133, 2.0-litre turbocharged four-cylinder, 360 hp / 450 Nm then 381 hp / 475 Nm (2017 update) |
| Years | 2015-2019 |
| 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-AMG GLA45 X156 2.0 turbo exhaust.
Is my 2014 or 2020 GLA45 X156 compatible?
The 2015 to 2019 model years are covered; the 2014 and 2020 GLA45 X156 are expressly excluded from our page. For a borderline vehicle, the VIN decides: we check it before manufacturing. The GLA45 S H247 has its own page.
What gains are listed for a GLA45 X156 at Stage 2?
According to the page, 420 hp and 560 Nm for the 360 hp version, 430 hp and 570 Nm for the 381 hp one, with a downpipe and a full ECU remap. On an M133 that is already working hard, the tuner’s reliability matters. The cat-back alone requires no ECU remap.
Mercedes-AMG GLA45 X156 2.0 turbo with a Rog exhaust: what should you know about vehicle inspection?
Presented with the valves closed, with the cat-back alone or a 200-cell downpipe, it keeps its catalytic converter active and a volume close to factory. With the 100-cell, the outcome varies depending on the vehicle and local regulations; the decat version is reserved for track use.
Can you drive discreetly with the family in a modified GLA45?
Yes: with the valves closed, the gases flow through the silencer and the SUV stays as calm as it was on delivery, in town as on the motorway. You save opening them for the moments when you are alone at the wheel.
Mercedes-AMG GLA45 X156 2.0 turbo: Does a valved exhaust system drone?
No. With the valves closed, the gases flow through the whole rear silencer and the cabin stays calm at a steady speed. Our Rog exhausts are designed to avoid drone. Learn more: Why our systems stay calm on the motorway.
Rog expert guide
Mercedes-AMG GLA45 X156: the AMG M133 unrestrained, the exhaust guide
The Mercedes-AMG GLA45 X156 packs into a compact format the M133, a 2.0-litre turbocharged four-cylinder assembled by AMG that delivers 360 hp and 450 Nm. The small SUV behaves like a true sports car, with all-wheel drive and sharp reactions....
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
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.
-
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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