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Porsche 911 carrera 2 tiptronics vs Porsche Boxster: reliability comparison

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

Porsche 911 carrera 2 tiptronics
80%
MOT pass rate · 43 vehicles
Porsche Boxster
83%
MOT pass rate · 46,488 vehicles
Verdict: On MOT pass rate the Porsche 911 carrera 2 tiptronics (80%) and Porsche Boxster (83%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche 911 carrera 2 tiptronics Porsche Boxster
MOT pass rate 80% 83% ✓
MOT failure rate 20% 17% ✓
Faults & advisories per test 0.7 ✓ 1.4
Dangerous-fault share 4% 1% ✓
Average mileage 66,646 mi 74,547 mi
Sample size (vehicles) 43 46,488

Most common faults

Porsche 911 carrera 2 tiptronics

  1. Exhaust emissions Lambda reading after 2nd fast idle outside specified limits (7.3.D.3)
  2. Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Offside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  6. Nearside Front position lamp(s) not working (1.1.A.3b)

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))

Reliability FAQ

On MOT pass rate the Porsche 911 carrera 2 tiptronics (80%) and Porsche Boxster (83%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 911 carrera 2 tiptronics report Full Porsche Boxster 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.