Engine advisory

Oil Leak MOT Advisory Cost and Used Car Risk

An oil leak advisory can be minor or expensive. The risk is uncertainty: a cheap gasket and a major engine seal can look similar in a short viewing.

Typical UK cost

GBP 80-250 for minor gasket leaks, GBP 500+ for awkward engine or gearbox leaks

Buyer risk

Price it in

Negotiation note

Ask for diagnosis first. Negotiate hard if the leak source is unknown.

MOT wording this covers

Oil leak
Oil leak, but not excessive

What it means

The tester saw oil escaping from the engine, gearbox or surrounding area, but not enough to fail the MOT as excessive leakage.

Is it safe to drive?

Check oil level frequently until diagnosed. Avoid buying if oil is dripping, burning on hot components, or the engine bay has been freshly cleaned to hide leaks.

Should you buy a car with this advisory?

A one-off minor seep is common on older cars. Repeated oil leak advisories, fresh underseal, or a recently cleaned engine bay need caution.

Checks at a viewing

Check the ground where the car is parked for fresh oil spots.
Look for oil around the sump, rocker cover, turbo area and gearbox join.
Check whether the oil level is low or overfilled.

Garage checks

Ask for the exact leak source before agreeing a repair price.
Ask whether the leak could contaminate belts, clutch components or exhaust parts.

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 oil leak advisory cost to fix?

A typical UK repair range is GBP 80-250 for minor gasket leaks, GBP 500+ for awkward engine or gearbox leaks. The final bill depends on the car, access to the part, labour rate and whether related parts also need replacing.

Is oil leak a serious MOT advisory?

Check oil level frequently until diagnosed. Avoid buying if oil is dripping, burning on hot components, or the engine bay has been freshly cleaned to hide leaks.

Should I buy a used car with oil leak on the MOT history?

A one-off minor seep is common on older cars. Repeated oil leak advisories, fresh underseal, or a recently cleaned engine bay need caution.

What should I check before buying a car with this advisory?

Check the ground where the car is parked for fresh oil spots. Look for oil around the sump, rocker cover, turbo area and gearbox join. Check whether the oil level is low or overfilled.

Related advisories

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