BMW M550I MOT Pass Rate & Official DVSA Failure Statistics

BMW M550I MOT History and Failure Rates vs UK National Average

The BMW M550I passed on its first attempt in 84.9%, and its overall record sits +5.7 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the BMW M550I in the 2023–2025 data: 475 tests across 3 model years (2020–2022). 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 BMW M550I MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the BMW M550I, the Tyres 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 BMW M550I's recorded defect strings, merged across its year pages.

Top Recorded BMW M550I DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the BMW M550I, each with how many of the model's 475 tests it was noted on.

• "Has a bulge, caused by separation or partial failure of its structure" (Major) — noted on about 15 BMW M550I tests, 3.2% of the model's MOT record.
• "Has a cut in excess of the requirements deep enough to reach the ply or cords" (Major) — noted on about 13 BMW M550I tests, 2.7% of the model's MOT record.
• "Fractured" (Major) — noted on about 12 BMW M550I tests, 2.5% of the model's MOT record.
• "Has ply or cords exposed" (Major) — noted on about 11 BMW M550I tests, 2.3% of the model's MOT record.
• "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits" (Major) — noted on about 4 BMW M550I tests, 0.8% of the model's MOT record.
• "Has a lump, caused by separation or partial failure of its structure" (Major) — noted on about 3 BMW M550I tests, 0.6% of the model's MOT record.

Best and Worst BMW M550I Model Years by Pass Rate

The strongest BMW M550I model year on record is 2021 (89.5% across 248 tests), and the weakest is 2020 (80.9%). The gap between them is 8.6 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

BMW M550I reliability is improving in the DVSA data — the pass rate moves about 2.3 points a year across the most recent model years shown above.

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

Pre-MOT Inspection Checklist for BMW M550I Owners

These checks follow this BMW M550I's own most-recorded failure strings, starting with what a tester is most likely to flag on a BMW M550I.

• 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.

• the lights — “headlamp aim too high”

  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 windscreen — “windscreen damaged”

  Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.

Derived from the DVSA failure strings testers recorded for the BMW M550I. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: BMW M550I MOT & Reliability