Porsche 911 Turbo S S-A: MOT pass rate and reliability data

The Porsche 911 Turbo S S-A passes its MOT first time more often than the average UK car, by 17.3 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 554 individual Porsche 911 Turbo S S-A tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate94%
UK national average76.7%
Difference+17.3 points
Tests analysed554
Average mileage at test13,358 miles
Average year of manufacture2020
Reliability rank139 of 2,005 models

What this means if you are buying one

A 94% first-time pass rate means roughly 6 in every 100 Porsche 911 Turbo S S-As presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Porsche 911 Turbo S S-A tested had covered 13,358 miles and was built around 2020.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a Porsche 911 Turbo S S-A bought as a repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Porsche 911 Turbo S S-A rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged Porsche 911 Turbo S S-As actually sold for at UK salvage auction.

Most common MOT failures on a Porsche 911 Turbo S S-A

  1. A tyre seriously damaged, 0.8% of tests
  2. Number plate does not conform to the specified requirements, 0.6% of tests (3.96x the national rate for this defect)
  3. Emissions levels exceed default limits, 0.6% of tests (2.02x the national rate for this defect)
  4. Tyre tread depth not in accordance with the requirements, 0.5% of tests
  5. Lambda coefficient outside the default limits or the range specified by the manufacturer, 0.4% of tests
  6. Number plate missing or so insecure that it is likely to fall off, 0.3% of tests (9.72x the national rate for this defect)
  7. Emission control equipment fitted by the manufacturer missing, obviously modified or obviously defective, 0.3% of tests (11.83x the national rate for this defect)
  8. Engine MIL illuminated indicating a malfunction, 0.3% of tests
  9. A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, 0.2% of tests
  10. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 0.2% of tests (1.34x the national rate for this defect)

From 1,864 DVSA-tracked Porsche 911 Turbo S S-A tests, 2024. DVSA testers marked 4.72% of these flagged Porsche 911 Turbo S S-A defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

Porsche 911 Turbo S S-A pass rate by model year

Pass rates fall steadily as cars age, so the model year matters as much as the model. First-time pass rate for each Porsche 911 Turbo S S-A year:

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Models with a similar pass rate

If this car is a salvage or write-off

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Porsche 911 Turbo S S-A MOT pass rate badge: 94%

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All 2,005 models ranked by MOT pass rate