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Porsche 997 turbo vs Porsche Boxster: reliability comparison

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

Porsche 997 turbo
92%
MOT pass rate · 7 vehicles
Porsche Boxster
83%
MOT pass rate · 46,488 vehicles
Verdict: On MOT pass rate the Porsche 997 turbo (92%) 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 997 turbo Porsche Boxster
MOT pass rate 92% ✓ 83%
MOT failure rate 8% ✓ 17%
Faults & advisories per test 0.3 ✓ 1.4
Dangerous-fault share 0% ✓ 1%
Average mileage 41,356 mi 74,547 mi
Sample size (vehicles) 7 46,488

Most common faults

Porsche 997 turbo

  1. Front Windscreen damaged but not adversely affecting driver's view Small chip in windscreen (3.2 (a) (i))
  2. Front Windscreen damaged but not adversely affecting driver's view Chip in windscreen (3.2 (a) (i))
  3. Offside Front Track rod end ball joint has slight play (2.1.3 (b) (i))
  4. Headlamp cleaning device for LED or HID headlamp inoperative (4.1.6 (a) (ii))
  5. Horn sound not in accordance with requirements (7.7 (c))
  6. Front Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

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 997 turbo (92%) and Porsche Boxster (83%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 997 turbo 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.