Change Car Rear Silencer Audi A8
Change Car Rear Silencer
| Estimated time | 0h45–2h00 |
|---|---|
| Estimated labour cost | ~75–200£ |
| Difficulty | Easy |
| Vehicles |
A8 1994-2003 7
A8 2003-2010 12
A8 2010-2018 21
A8 2018-2025 7
|
| Remove/refit the silencer | 0h45–1h30 |
| Renew the silencer | 0h45–1h30 |
| Repair the silencer* | 1h30 |
| Repair the front silencer* | 1h30 |
| Align the front silencer* | 0h30 |
| Remove/refit the main silencer | 1h30–2h00 |
| Renew the main silencer | 1h30–2h00 |
| Remove/refit both centre silencers | 2h00 |
| Renew both centre silencers | 1h30 |
| Repair the main silencer | 0h30–0h45 |
| Align the main silencer | 0h30 |
| Difficult main silencer removal* | 0h30 |
| Remove/refit the rear silencer | 0h45–2h00 |
| Renew the rear silencer | 0h45–2h00 |
| Remove/refit the rear left silencer | 0h45–2h00 |
| Renew the rear left silencer | 0h45–2h00 |
| Remove/refit the rear right silencer | 0h45–2h00 |
| Renew the rear right silencer | 0h45–2h00 |
| Repair the rear silencer | 0h30 |
| Weld a sheet-metal repair panel onto the rear silencer | 0h30 |
| Difficult rear silencer removal | 0h30 |
| Remove/refit the rear silencer trim | 0h30 |
| Renew the rear silencer trim | 0h30 |
| Remove/refit both rear silencer trims | 0h30 |
| Renew both rear silencer trims | 0h30 |
| Repair the main silencer* | 1h30 |
| Align the main silencer* | 0h30 |
| Repair the rear silencer* | 1h30 |
| Weld a sheet-metal repair panel onto the rear silencer* | 0h45 |
| Difficult rear silencer removal* | 0h30 |
| Remove/refit both silencers | 2h00 |
| Renew both silencers | 2h00 |
| Remove/refit the front silencer | 1h30–3h00 |
| Renew the front silencer | 1h30–2h30 |
| Renew the front and centre silencers | 2h00 |
| Remove/refit the front and centre silencers | 2h00 |
| Renew the front, centre and rear silencers | 2h00 |
| Remove/refit the front, centre and rear silencers | 2h00 |
| Remove/refit both rear silencers | 0h45–1h30 |
| Renew both rear silencers | 0h45–1h30 |
| Renew the centre silencer | 1h30 |
| Remove/refit the centre silencer | 1h30 |
| Remove/refit the front silencer (follow-up work) | 3h00 |
| Renew the front left silencer | 2h30 |
| Remove/refit the front left silencer | 2h30 |
| Renew the front right silencer | 2h00 |
| Remove/refit the front right silencer | 2h00 |
| Remove/refit both front silencers | 3h00 |
What is a Audi A8 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 Audi A8 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 Audi A8 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.
4 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| A8 1994-2003 | 1994-2003 | 2.8 V6 30V Petrol (AMX), 3.3 V8 TDI Diesel (AKF), 3.7 V8 40V Petrol (AKC), 4.2 V8 40V Petrol (AUW), 4.2 V8 40V Petrol (AVN), 6.0 W12 Petrol (AZC), S8 (4.2 V8 40V) Petrol (AVP) | Diesel, Petrol |
| A8 2003-2010 | 2003-2010 | 2.8 FSi Petrol (BDX), 3.0 V6 Petrol (ASN), 3.0 V6 TDI Diesel (ASB), 3.0 V6 TDI Diesel (BNG), 3.2 FSI Petrol (BPK), 3.7 V8 Petrol (BFL), 4.0 V8 TDI Diesel (ASE), 4.2 V8 Petrol (BFM), 4.2 V8 Petrol (BVJ), 4.2 V8 TDI Diesel (BVN), 6.0 W12 Petrol (BHT), S8 (5.2 V10 FSi) Petrol (BSM) | Diesel, Petrol |
| A8 2010-2018 | 2010-2018 | 2.0 TFSI Hybrid Electricity,Petrol (CHJA+EAFA), 2.0 TFSI Petrol (CYPA), 3.0 TDI Diesel (CDTA), 3.0 TDI Diesel (CDTB), 3.0 TDI Diesel (CLAB), 3.0 TDI Diesel (CMHA), 3.0 TDI Diesel (CTBA), 3.0 TDI Diesel (CTBB), 3.0 TDI Diesel (CTBD), 3.0 TFSI Petrol (CGWA), 3.0 TFSI Petrol (CREA)… | Diesel, Electricity, Petrol |
| A8 2018-2025 | 2018-2025 | 50 TDI Diesel (DDVC), 50 TDI MHEV Diesel (DMGK), 55 TFSI Petrol (CZSE), 60 FSi Petrol (CXYA), 60 TDI Diesel (CVXB), 60 TFSI e Electricity,Petrol (CZSE), S8 (4.0 V8 TFSI) MHEV Petrol (CWWB) | Diesel, Electricity, Petrol |