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Austin Big six vs Austin Montego l: reliability comparison

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

Austin Big six
67%
MOT pass rate · 1 vehicles
Austin Montego l
69%
MOT pass rate · 153,789 vehicles
Verdict: On MOT pass rate the Austin Big six (67%) and Austin Montego l (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Austin Big six Austin Montego l
MOT pass rate 67% 69% ✓
MOT failure rate 33% 31% ✓
Faults & advisories per test 2.3 2.0 ✓
Dangerous-fault share 0% 0%
Average mileage 85,121 mi 87,961 mi
Sample size (vehicles) 1 153,789

Most common faults

Austin Big six

  1. Body has slight corrosion (6.1.B.2)
  2. Nearside front brake recording little or no effort (3.7.B.5a)
  3. Offside Rear rear brake recording little or no effort (3.7.B.5a)
  4. Offside Semaphore indicator arm arm does not show an amber light to the front (1.4.C.1b)
  5. Parking brake: efficiency below requirements (3.7.B.7)
  6. Service brake: efficiency below requirements (3.7.B.7)

Austin Montego l

  1. Oil leak
  2. Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
  3. Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
  4. Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
  5. Parking brake: efficiency below requirements (3.7.B.7)
  6. oil leak

Reliability FAQ

On MOT pass rate the Austin Big six (67%) and Austin Montego l (69%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Austin Big six report Full Austin Montego l 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.