Exhaust advisory
Exhaust Corroded MOT Advisory Cost
An exhaust corrosion advisory is often manageable, but leaks and emissions-related parts can become expensive.
Typical UK cost
GBP 80-250 for a section or mounting, more for catalytic converters or DPF parts
Buyer risk
Monitor
Negotiation note
Negotiate modestly unless the catalytic converter, DPF or manifold is involved.
MOT wording this covers
- Exhaust corroded
- Exhaust has a minor leak
- Exhaust mounting defective
What it means
The tester saw corrosion or weakness in the exhaust system. If it is only a rear box or mounting, the repair is usually straightforward.
Is it safe to drive?
A minor advisory is usually not urgent, but exhaust fumes, loud blowing or emissions warnings need attention.
Should you buy a car with this advisory?
Check whether the advisory is for a simple rear section or an expensive emissions component. On diesels, be cautious around DPF and catalytic converter issues.
Checks at a viewing
- Listen for blowing or rattling from underneath the car.
- Check whether the exhaust sits securely and does not knock on the body.
- Look for soot marks around joints, which can indicate a leak.
Garage checks
- Ask which section is corroded and whether it can be replaced separately.
- Ask whether emissions readings are close to MOT limits.
Check the full MOT history
Repeated advisories matter more than one isolated note. Enter the registration to check the vehicle history and model failure pattern.
Frequently Asked Questions
How much does a exhaust corroded advisory cost to fix?
A typical UK repair range is GBP 80-250 for a section or mounting, more for catalytic converters or DPF parts. The final bill depends on the car, access to the part, labour rate and whether related parts also need replacing.
Is exhaust corroded a serious MOT advisory?
A minor advisory is usually not urgent, but exhaust fumes, loud blowing or emissions warnings need attention.
Should I buy a used car with exhaust corroded on the MOT history?
Check whether the advisory is for a simple rear section or an expensive emissions component. On diesels, be cautious around DPF and catalytic converter issues.
What should I check before buying a car with this advisory?
Listen for blowing or rattling from underneath the car. Check whether the exhaust sits securely and does not knock on the body. Look for soot marks around joints, which can indicate a leak.