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Porsche Boxster vs Porsche Carrara: 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 Carrara
71%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Porsche Boxster (83%) and Porsche Carrara (71%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche Boxster Porsche Carrara
MOT pass rate 83% ✓ 71%
MOT failure rate 17% ✓ 29%
Faults & advisories per test 1.4 ✓ 1.9
Dangerous-fault share 1% 0% ✓
Average mileage 74,547 mi 79,242 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 Carrara

  1. Oil leak, but not excessive (8.4.1 (a) (i))
  2. Rear fog lamp not working (1.3.2b)
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Rear Brake hose has slight corrosion to ferrules (3.6.B.4e)
  6. Under-trays fitted obscuring some underside components

Reliability FAQ

On MOT pass rate the Porsche Boxster (83%) and Porsche Carrara (71%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche Boxster report Full Porsche Carrara 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.