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Porsche Boxster vs Porsche Chesil speedster: 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 Chesil speedster
64%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Porsche Boxster (83%) and Porsche Chesil speedster (64%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche Boxster Porsche Chesil speedster
MOT pass rate 83% ✓ 64%
MOT failure rate 17% ✓ 36%
Faults & advisories per test 1.4 ✓ 2.1
Dangerous-fault share 1% 0% ✓
Average mileage 74,547 mi 7,408 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 Chesil speedster

  1. Horn not working (1.6.2a)
  2. Nearside Headlamp aim too high (1.8)
  3. Offside Headlamp aim too high (1.8)
  4. Windscreen washer provides insufficient washer liquid (8.2.3)
  5. Hydraulic brake cylinder corroded but not excessively weakened (3.6.A.2b)
  6. Offside Front Tyre worn close to the legal limit (4.1.E.1)

Reliability FAQ

On MOT pass rate the Porsche Boxster (83%) and Porsche Chesil speedster (64%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche Boxster report Full Porsche Chesil speedster 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.