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Porsche Boxster vs Porsche Cab: reliability comparison

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

Porsche Boxster
83%
MOT pass rate · 46,488 vehicles
Porsche Cab
80%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Porsche Boxster (83%) and Porsche Cab (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche Boxster Porsche Cab
MOT pass rate 83% ✓ 80%
MOT failure rate 17% ✓ 20%
Faults & advisories per test 1.4 1.3 ✓
Dangerous-fault share 1% 0% ✓
Average mileage 74,547 mi 69,390 mi
Sample size (vehicles) 46,488 2

Most common faults

Porsche Boxster

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Under-trays fitted obscuring some underside components
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Porsche Cab

  1. Service brake: service brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)
  2. Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.5b)
  3. Oil leak
  4. Brake master cylinder/servo mounting prescribed area is corroded but not considered excessive (3.6.C.3)
  5. Nearside Front Suspension component mounting prescribed area is corroded but not considered excessive (2.4.A.3)
  6. Offside Front Suspension component mounting prescribed area is corroded but not considered excessive (2.4.A.3)

Reliability FAQ

On MOT pass rate the Porsche Boxster (83%) and Porsche Cab (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche Boxster report Full Porsche Cab 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.