Noble M400 MOT Pass Rate & Official DVSA Failure Statistics

Noble M400 MOT History and Failure Rates vs UK National Average

The Noble M400 passed on its first attempt in 93.0%, and its overall record sits +12.4 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Noble M400 in the 2023–2025 data: 151 tests across 2 model years (2003–2004). A test still carries exactly one pass or fail verdict.

Figures are computed from every recorded DVSA test for this model in the 2023–2025 data.

Most Common Noble M400 MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Noble M400, the Lamps, reflectors and electrical equipment section leads the record — the breakdown below shows where the recorded failures cluster, then the exact strings behind the three biggest sections.

Shares are over the Noble M400's recorded defect strings, merged across its year pages.

Top Recorded Noble M400 DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Noble M400, each with how many of the model's 151 tests it was noted on.

• "Position lamp not working" (Major) — noted on about 3 Noble M400 tests, 2.0% of the model's MOT record.
• "Ball joint dust cover severely deteriorated" (Minor) — noted on about 3 Noble M400 tests, 2.0% of the model's MOT record.
• "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits" (Major) — noted on about 2 Noble M400 tests, 1.3% of the model's MOT record.
• "Catalyst emissions carbon monoxide content after 2nd fast idle exceeds manufacturer's specified limits" (Major) — noted on about 2 Noble M400 tests, 1.3% of the model's MOT record.
• "Registration plates does not conform to the specified requirements" (Rectified) — noted on about 2 Noble M400 tests, 1.3% of the model's MOT record.
• "Headlamp not working on dipped beam" (Major) — noted on about 2 Noble M400 tests, 1.3% of the model's MOT record.

Best and Worst Noble M400 Model Years by Pass Rate

The strongest Noble M400 model year on record is 2003 (94.2% across 69 tests), and the weakest is 2004 (92.7%). The gap between them is 1.5 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Newest model year first. Only years with at least 50 recorded tests are listed.

Pre-MOT Inspection Checklist for Noble M400 Owners

These checks follow this Noble M400's own most-recorded failure strings, starting with what a tester is most likely to flag on a Noble M400.

• the lights — “position lamp not working”

  Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

• the suspension joints — “ball joint dust cover severely deteriorated”

  With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.

• the exhaust and emissions — “catalyst emissions Lambda reading after 2nd fast idle outside specified limits”

  Listen for a blow at idle and have someone rev it gently. Then look at the tailpipe smoke: blue is oil, white when warm is coolant, black is over-fuelling. Any of those and the emissions test is the least of it.

Derived from the DVSA failure strings testers recorded for the Noble M400. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Noble M400 MOT & Reliability