Skip to content

Porsche Boxster vs Porsche Caynne: 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 Caynne
84%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Porsche Boxster (83%) and Porsche Caynne (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche Boxster Porsche Caynne
MOT pass rate 83% 84% ✓
MOT failure rate 17% 16% ✓
Faults & advisories per test 1.4 0.6 ✓
Dangerous-fault share 1% 0% ✓
Average mileage 74,547 mi 124,769 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 Caynne

  1. Rear Brake pad(s) wearing thin (3.5.1g)
  2. Nearside Headlamp not working on dipped beam (1.7.5a)
  3. Battery insecure (1.9.1)
  4. Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  5. Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  6. Offside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)

Reliability FAQ

On MOT pass rate the Porsche Boxster (83%) and Porsche Caynne (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche Boxster report Full Porsche Caynne 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.