Mazda Bt-50 MOT Pass Rate & Official DVSA Failure Statistics

Mazda Bt-50 MOT History and Failure Rates vs UK National Average

The Mazda Bt-50 passed on its first attempt in 69.1%, and its overall record sits −5.7 percentage points below the national average for all cars. These figures come from every recorded DVSA MOT test for the Mazda Bt-50 in the 2023–2025 data: 3,060 tests across 5 model years (2006–2010). 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 Mazda Bt-50 MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Mazda Bt-50, 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 Mazda Bt-50's recorded defect strings, merged across its year pages.

Top Recorded Mazda Bt-50 DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Mazda Bt-50, each with how many of the model's 3,060 tests it was noted on.

• "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources" (Minor) — noted on about 205 Mazda Bt-50 tests, 6.7% of the model's MOT record.
• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 186 Mazda Bt-50 tests, 6.1% of the model's MOT record.
• "Position lamp not working" (Major) — noted on about 160 Mazda Bt-50 tests, 5.2% of the model's MOT record.
• "Headlamp lens slightly defective" (Minor) — noted on about 150 Mazda Bt-50 tests, 4.9% of the model's MOT record.
• "Rigid brake pipes excessively corroded" (Major) — noted on about 125 Mazda Bt-50 tests, 4.1% of the model's MOT record.
• "Joints constant velocity boot severely deteriorated" (Minor) — noted on about 118 Mazda Bt-50 tests, 3.9% of the model's MOT record.

Best and Worst Mazda Bt-50 Model Years by Pass Rate

The strongest Mazda Bt-50 model year on record is 2009 (77.5% across 1,085 tests), and the weakest is 2006 (71.5%). The gap between them is 6.0 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Mazda Bt-50 reliability is improving in the DVSA data — the pass rate moves about 0.9 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 Mazda Bt-50 Owners

These checks follow this Mazda Bt-50's own most-recorded failure strings, starting with what a tester is most likely to flag on a Mazda Bt-50.

• the lights — “registration plate lamp(s) inoperative in the case of multiple lamps or light sources”

  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.

• the brake pipes — “rigid brake pipes excessively corroded”

  Brake pipes run under the car, usually in front of the rear wheels. Flaking or crusty metal is what fails; a light dusting of surface rust does not. Worth asking a garage to look while it is on a ramp.

Derived from the DVSA failure strings testers recorded for the Mazda Bt-50. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Where the Mazda Bt-50 is most common

Across every Bt-50 model year on record (2006–2010): 1,171 Mazda Bt-50 cars tested in a recordable postcode area, across 3,060 tests. Ashford (TN) has the most, with 40 cars tested there. Cars are counted by the postcode area of the MOT station, so this is where they were tested, not necessarily where their owners live.

The twenty areas with the most Mazda Bt-50 cars in the record, sorted by car count — sort the columns for a different question. Cars tested at a station whose postcode area could not be resolved are counted in the model's total but in no area, so the shares add up to slightly under 100% even across every area, and an area's cars are a subset of the model's. Pass rate is blank below 30 tests in an area, where a percentage is noise rather than a finding. How this model's pass rate varies by postcode →

Frequently Asked Questions: Mazda Bt-50 MOT & Reliability