MOT failure data · 2025

Peugeot 306 MOT problems

Across every Peugeot 306 that failed its 2025 MOT, the defect testers recorded most often was rbt (sp) efficiency below requirements, on 4.67% of failure items. The broadest problem area was brakes at 26.38%. These are recorded defects across the model, not a diagnosis of any one car.

Most common Peugeot 306 MOT failures

#	Recorded defect	Area	Share
1	Rbt (sp) efficiency below requirements	Brakes	4.67%
2	Steering rack gaiter missing or no longer prevents the ingress of dirt	Steering	3.25%
3	Exhaust system has a major leak of exhaust gases	Body, chassis, structure	2.96%
4	Wipers does not clear the windscreen effectively	Visibility	2.8%
5	Catalyst emissions lambda reading after 2nd fast idle outside specified limits	Noise, emissions and leaks	2.56%
6	Ball joint ball joint excessively worn	Suspension	2.54%
7	Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt	Body, chassis, structure	2.44%
8	Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength	Suspension	2.4%
9	Service brake imbalance across an axle	Brakes	2.3%
10	Rigid brake pipes excessively corroded	Brakes	2.25%

Shares are of all recorded failure items for this model, so they sum to less than 100% — a single failed test often records several defects, and the long tail below the top 10 is not shown.

What this means if you are buying one

Use it as a viewing checklist. If you are looking at a Peugeot 306, these are the areas worth inspecting and worth asking about — and worth reading the car's own MOT history for, since a defect that keeps reappearing as an advisory is a better signal than any model-wide average.

The MOT record also has hard limits: it does not check the engine, clutch or gearbox, and it says nothing about outstanding finance, insurance write-off history, stolen markers or whether the mileage is genuine. Our used Peugeot 306 buying guide covers what to check beyond the MOT.

Checking a specific Peugeot 306?

Enter its registration for finance, write-off, stolen, mileage and keeper history.

Other Peugeot models

Peugeot 306 MOT FAQs

What does a Peugeot 306 most commonly fail its MOT on?

The single most recorded defect on Peugeot 306 cars failing their 2025 MOT was "rbt (sp) efficiency below requirements", appearing on 4.67% of failure items.

Does this mean my Peugeot 306 will fail?

No. This is what testers recorded across every Peugeot 306 that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Peugeot 306 passed 66.03% of its initial tests.

How do I see a specific Peugeot 306's MOT history?

Enter its registration on our free MOT history check to see that car's own test results, advisories and recorded mileages.

Defect counts from the DVSA MOT Anonymised test-item data for 2025 (class 4 initial tests, failure items only — advisories and minor defects excluded), licensed under the Open Government Licence v3.0.