Change Car Rear Silencer Mazda 3

Change Car Rear Silencer

Easy 0h45–3h00 ~75–300£
Estimated time 0h45–3h00
Estimated labour cost ~75–300£
Difficulty Easy
Repair the silencer* 1h30
Repair the front silencer* 1h30
Align the front silencer* 0h30
Remove/refit the main silencer 1h00–2h30
Renew the main silencer 1h00–2h30
Repair the main silencer* 0h30–1h30
Align the main silencer* 0h30
Difficult main silencer removal* 0h30
Remove/refit the rear silencer 0h45–3h00
Renew the rear silencer 0h45–3h00
Repair the rear silencer* 0h30–1h30
Weld a sheet-metal repair panel onto the rear silencer* 0h45
Difficult rear silencer removal* 0h30
Repair the main silencer 0h30
Remove/refit the rear silencer EURO 4 2h30
Remove/refit the rear silencer EURO 3 1h00
Renew the rear silencer EURO 3 1h00
Renew the rear silencer EURO 4 2h30
Repair the rear silencer 0h30
Remove/refit the silencer 0h45–3h00
Renew the silencer 0h45–3h00
Remove/refit the rear silencer Hatchback, 5 doors 0h45
Renew the rear silencer Hatchback, 5 doors 0h45

What is a Mazda 3 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 Mazda 3 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 Mazda 3 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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4 models covered

Model Year Range Engines covered Fuel
3 2003-2013 2003-2013 1.4 MZR 16V Petrol (ZJ), 1.6 CiTD Diesel (Y6), 1.6 CiTD Diesel (Y6), 1.6 MZR 16V Petrol (Z6), 2.0 CiTD Diesel (RF), 2.0 MZR 16V Petrol (LF), 2.0 MZR 16V Petrol (LF), 2.3 MZR 16V MPS Petrol (L3) Diesel, Petrol
3 2009-2016 2009-2016 1.6 16V Petrol (Z6), 1.6 CiTD Diesel (Y6), 1.6 CiTD Diesel (Y6), 2.0 MZR DISI i-stop Petrol (LF), 2.0 MZR Petrol (LF), 2.0 SKYACTIV-G Petrol (PE), 2.2 CiTD 150 Diesel (R2), 2.2 CiTD 185 Diesel (R2), 2.3 MPS DISI Turbo Petrol (L3) Diesel, Petrol
3 2014-2018 2014-2018 1.5 SKYACTIV-D 105 Diesel (S5), 1.5 SKYACTIV-G 100 Petrol (P5), 1.5 SKYACTIV-G 120 Petrol (P5), 2.0 SKYACTIV-G 120 Petrol (PE), 2.0 SKYACTIV-G 165 Petrol (PE), 2.2 SKYACTIV-D 150 Diesel (SH) Diesel, Petrol
3 2019-2025 2019-2025 1.5 SKYACTIV-G 120 Petrol (P5), 1.8 SKYACTIV-D 115 Diesel (S8), 2.0 e-SKYACTIV-G 122 48V (MHEV),Petrol (PE), 2.0 e-SKYACTIV-G 150 48V (MHEV),Petrol (PE), 2.0 e-SKYACTIV-X 186 48V (MHEV),Petrol (HF), 2.0 SKYACTIV-X 180, -MHEV 48V (MHEV),Petrol (HF) 48V (MHEV), Diesel, Petrol

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