1999 Porsche 911 3.4L Petrol · S217 ADP
1999 Porsche 911 (3.4L, petrol). First registered 05 Jan 1999. Recorded mileage 84,001 miles. MOT valid until 15 Apr 2027. Taxed until 01 May 2027.
- Make & Model
- PORSCHE 911
- Year / Origin
- 1999 · Glasgow
- Safety Recall
- Unknown
- MOT Status
- Valid until 15 Apr 2027
- Road Tax
- Taxed (01 May 2027)
- Recorded Mileage
- 84,001 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 3.4L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
S217 ADP Key Findings
- 3 MOT tests recorded
- Latest MOT passed on 17/04/2026
- 84,001 miles recorded at latest MOT
- 1 historical MOT failure
- 5 defects noted at the latest MOT
- Recurring brakes items (16 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
S217 ADP MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
3 MOT tests are recorded for this 1999 Porsche 911 (S217 ADP) between December 2024 and April 2026.
The record contains 2 passes and 1 failure.
The most recent test on 17 April 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Brakes (16 issues), Tyres (1 issue), Lighting (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 13 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Recorded failure items include: “Service brake excessively binding both front locked up cant spin them by hand (1.2.1 (f))”; “Service brake excessively binding both rear (1.2.1 (f))”; “Rear Brakes imbalanced across an axle Axle 2 (1.2.1 (b) (i))”.
S217 ADP Mileage History
- 04/12/202483,469 mi
- 25/03/202683,992 mi+523 mi
- 17/04/202684,001 mi+9 mi
Average of roughly 389 miles per year across 3 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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Known faults for Porsche Porsche 911 (996)
Our database tracks 4 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
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PORSCHE 911 Model Intelligence & Reliability
Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 1999 model year cars.
- IMS Bearing FailureSerious
Early M96 engines can suffer intermediate shaft bearing failure, leading to major internal damage.
- Rear Main Seal Oil LeakModerate
The rear main seal between engine and gearbox degrades over time, causing oil to leak into the bellhousing area. Often mistaken for IMS failure.
- Coolant Pipe FailuresModerate
The coolant crossover pipes and thermostat housing o-rings perish, causing coolant loss and potential overheating. Plastic degrades with heat cycles.
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