Exhaust Mercedes GLC-Class (2015-2022)

The Mercedes GLC-Class exhaust system (2015-2022 models and later) may experience issues such as faulty exhaust valves and flaps, EGR valve failures, abnormal noises from silencers, and AdBlue® post-treatment problems. Official recalls have addressed risks including fire hazards and gas leaks.

Hybrid GLCs may have defective exhaust flaps causing malfunction. Diagnosis is needed to confirm, and replacements are generally charged to the owner.

Signs of an EGR (exhaust gas recirculation) valve problem include power loss and dashboard warning lights. This is common especially in 2018 models and typically requires cleaning or replacement.

Abnormal exhaust noises such as knocking or rattling can appear, notably on GLC 450D or GLC Coupé 250 petrol models. These may be linked to silencers or clamps and should be inspected by a garage.

Low AdBlue® levels can limit engine power and even block starting, with warning messages on-screen indicating imminent risk. Timely refilling is necessary to maintain performance and compliance.

Several recalls affect the GLC's exhaust system indirectly through gas or oil leaks that pose fire risks. These include faulty argon gas connections, oil leaks on turbocharger pipes, and cooling pump belt failures causing overheating and leaks. Recalls cover affected models from 2016 to 2021 and are free of charge.

• Gas leak due to faulty argon line fitted on 2016-2020 models
• Oil leakage in turbochargers on 2018-2019 models
• Cooling system belt breakdown leading to oil leaks and overheating

Owners should verify recall status with official Mercedes sources by VIN.

Professional services exist to replace rear silencers, including vehicle pickup and delivery. Costs vary and warranties through dealerships are limited, so using specialized workshops is advised for quality and reliability.

• Replacement of GLC rear silencers
• Booking includes vehicle transport
• Warranty depends on service provider

Such services ensure your car’s exhaust system maintains original performance and sound quality.

For online research and forums, use keywords such as:

• “Mercedes GLC exhaust recall”
• “GLC EGR valve fault”
• “GLC 450D exhaust noise”
• “AdBlue GLC power limit”
• “Valvetronic exhaust Mercedes GLC”

Check official Mercedes-Benz or government safety sites for recall information based on your vehicle’s VIN to ensure accurate updates and solutions.

Remember to focus on genuine exhaust parts rather than tuning or aftermarket sport performance modifications when searching for replacement or repair.