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Mazda 3 vs Mazda B2300: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Mazda 3
78%
MOT pass rate · 164,058 vehicles
Mazda B2300
59%
MOT pass rate · 6 vehicles
Verdict: On MOT pass rate the Mazda 3 (78%) and Mazda B2300 (59%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Mazda 3 Mazda B2300
MOT pass rate 78% ✓ 59%
MOT failure rate 22% ✓ 41%
Faults & advisories per test 2.0 2.0
Dangerous-fault share 3% 0% ✓
Average mileage 90,915 mi 131,677 mi
Sample size (vehicles) 164,058 6

Most common faults

Mazda 3

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

Mazda B2300

  1. Nearside Front wheel bearing has slight play (2.5.A.3c)
  2. Offside Front wheel bearing has slight play (2.5.A.3c)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Nearside Front Seat belt damaged sufficient to obstruct correct operation of the belt (5.2.2a)
  5. Nearside Front Brake pad(s) wearing thin (3.5.1g)
  6. Rear Brake pipe slightly corroded (3.6.B.2c)

Reliability FAQ

On MOT pass rate the Mazda 3 (78%) and Mazda B2300 (59%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Mazda 3 report Full Mazda B2300 report Most reliable cars

Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.