Renault Scenic Exhaust System: Specs, Fitment & Common Faults

On the Scenic, if diesel, a genuinely serious mechanical chain: an EGR valve stuck closed can cause turbo bearing failure and catastrophic oil consumption.

Illustration for editorial purposes

OEM Part Numbers

Accuracy note: genuinely worth knowing: exhaust mounting rubbers on the Scenic perish over time and are a common, cheap cause of rattling or excess vibration that is often mistaken for a more serious exhaust fault — worth checking these first, since they are a far cheaper fix than replacing an entire exhaust section.

A Genuinely Serious Mechanical Chain Worth Understanding on dCi Diesels

If your car has a dCi diesel engine, this is worth understanding properly: if the EGR valve sticks in the closed position, exhaust gas temperature rises considerably, which can cause the turbocharger's bearings to fail and allow engine oil to enter the induction system. Left unaddressed, this can lead to the engine consuming its own oil supply and eventually suffering catastrophic failure. Documented cases confirm a genuinely important lesson: several turbochargers have been replaced without the EGR valve being addressed at the same time, only for the new turbo to fail again quickly. If you're having turbo work done on a dCi engine, it's genuinely worth insisting the EGR valve is properly checked and, if faulty, replaced as part of the same job.

A genuine, useful account worth knowing about diagnostic thoroughness: one documented case saw an engine management light misdiagnosed by an initial garage as simply needing a software update, when a proper DPF pressure test revealed the filter was completely blocked despite not showing the fault code that would normally be expected. The actual root cause included a stuck-open thermostat contributing to oil dilution with fuel — worth insisting on a full diagnostic picture rather than accepting the first, simplest explanation.

Genuine UK cost figures worth knowing: DPF cleaning has been quoted at an average of around £208 — worth getting as a benchmark before accepting a quote for full replacement.

The Part That Announces Its Own Problems

Unlike a lot of the parts on this site, this is one where you'll usually hear the fault before you see it — a rattle, a drone, a sudden increase in noise that wasn't there last week. That's actually useful, since it gives you a head start on catching problems early.

Renault Scenic Exhaust System reference plate

Before you buy: exhaust configuration differs significantly by engine size, fuel type and whether your car has a particulate filter. Always confirm against your VIN before ordering.

What It Does

The exhaust system channels burnt gases away from the engine, reduces noise through the silencer, and on most modern cars, treats emissions through a catalytic converter and particulate filter before gases exit the tailpipe. Petrol and diesel versions of the same model often use entirely different systems due to different emissions treatment requirements.

Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Exhaust System Guide for warning signs and fault codes to watch for, confirming fitment against your VIN, and which aftermarket brands are worth trusting.

More Renault Exhaust System

The same part, covered across other Renault models.