Change Car Rear Silencer Mercedes-Benz CLS

Change Car Rear Silencer

Easy 1h30–2h00 ~150–200£
Estimated time 1h30–2h00
Estimated labour cost ~150–200£
Difficulty Easy
Remove/refit the silencer 1h30–2h00
Renew the silencer 1h30–2h00
Repair the silencer* 1h30
Repair the front silencer* 1h30
Align the front silencer* 0h30
Repair the main silencer* 1h30
Align the main silencer* 0h30
Difficult main silencer removal* 0h30
Remove/refit the rear left silencer 1h00–2h30
Renew the rear left silencer 1h30–2h30
Remove/refit the rear right silencer 1h30–2h30
Renew the rear right silencer 1h30–2h30
Remove/refit both rear silencers 2h00–3h00
Renew both rear silencers 2h00–3h00
Repair the rear silencer 0h30
Weld a sheet-metal repair panel onto the rear silencer* 0h45
Difficult rear silencer removal* 0h30
Remove/refit the rear left silencer trim 0h30
Renew the rear left silencer trim 0h30
Remove/refit the rear right silencer trim 0h30
Renew the rear right silencer trim 0h30
Remove/refit both rear silencer trims 0h45–1h30
Renew both rear silencer trims 0h45–1h30
Remove/refit the main silencer 1h30–2h00
Renew the main silencer 1h30–2h00
Repair the main silencer 0h30
Remove/refit the left silencer 1h30
Renew the left silencer 1h30
Remove/refit the right silencer 1h30
Renew the right silencer 1h30
Remove/refit both silencers 1h30
Renew both silencers 1h30
Remove/refit the rear silencer 1h30–2h30
Renew the rear silencer 1h30–2h30
Repair the rear silencer* 1h30
Renew the centre silencer 1h30
Remove/refit the centre silencer 1h30

What is a Mercedes-Benz CLS rear silencer?

The rear silencer (also called the back box or rear muffler) reduces exhaust noise to an acceptable level. It is located at the end of the exhaust line, after the catalytic converter, particulate filter (if fitted), and sometimes an intermediate silencer.

When should you change the Mercedes-Benz CLS rear silencer?

No periodic replacement interval is specified. Carry out regular visual inspections for corrosion, holes, and deteriorated mounting rubbers. Signs that replacement is needed: louder exhaust noise, rattling from loose baffles, visible rust holes, exhaust fumes entering the cabin, or failure at the MOT/roadworthiness test.

Is it difficult to change the Mercedes-Benz CLS rear silencer?

Difficulty level 2/5: technically easy but may require effort if bolts and clamps are rusted. Key steps: raise the vehicle, apply penetrating oil to clamp bolts, remove the clamp connecting the silencer to the intermediate pipe, remove the mounting rubber hangers, fit the new silencer with new gasket/clamp, reattach mounting rubbers, check for leaks with engine running.

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View your CLS maintenance plan (keep the CLS token) →

3 models covered

Model Year Range Engines covered Fuel
CLS 2005-2011 2005-2011 280 Petrol (272.943), 320 CDI Diesel (642.920), 350 CDI Diesel (642.920), 350 CGi Petrol (272.985), 350, -LPG LPG,Petrol (272.964), 500, -LPG LPG,Petrol (113.967), 500/550 Petrol (273.960), 55 AMG V8 Kompressor Petrol (113.990), 63 AMG Petrol (156.983) Diesel, LPG, Petrol
CLS 2010-2017 2010-2017 220 BlueTEC, -T Diesel (651.924), 250 BlueTEC, -4MATIC Diesel (651.924), 250 CDI BlueEFF Diesel (651.924), 350 BlueEFF Petrol (276.952), 350 BlueTEC 4MATIC Diesel (642.858), 350 BlueTEC 4MATIC Diesel (642.858), 350 BlueTEC Diesel (642.852), 350 CDI 4MATIC Diesel (642.858), 350 C… Diesel, Petrol
CLS 2018-2023 2018-2023 300 d Diesel (654.920), 350 EQ Boost, -4MATIC 48V (MHEV),Petrol (264.920), 350d, -4MATIC Diesel (656.929), 400d 4MATIC Diesel (656.929), 450 EQ Boost, -4MATIC 48V (MHEV),Petrol (256.930), 53 AMG 4MATIC 48V (MHEV),Petrol (256.930) 48V (MHEV), Diesel, Petrol

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View the service schedule for your CLS →