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Porsche 911 vs Porsche Boxste: reliability comparison

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

Porsche 911
85%
MOT pass rate · 74,656 vehicles
Porsche Boxste
79%
MOT pass rate · 27 vehicles
Verdict: On MOT pass rate the Porsche 911 (85%) and Porsche Boxste (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Porsche 911 Porsche Boxste
MOT pass rate 85% ✓ 79%
MOT failure rate 15% ✓ 21%
Faults & advisories per test 1.1 ✓ 1.2
Dangerous-fault share 1% 1%
Average mileage 70,982 mi 78,607 mi
Sample size (vehicles) 74,656 27

Most common faults

Porsche 911

  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. Oil leak, but not excessive (8.4.1 (a) (i))

Porsche Boxste

  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. Nearside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
  4. Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
  5. Nearside Rear brake disc slightly pitted (3.5.1h)
  6. Offside Rear brake disc slightly pitted (3.5.1h)

Reliability FAQ

On MOT pass rate the Porsche 911 (85%) and Porsche Boxste (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Porsche 911 report Full Porsche Boxste 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.