1990 Porsche 928 S 5.0L Petrol · BOS 1M
1990 Porsche 928 S (5.0L, petrol). First registered 01/02/1990. Recorded mileage 152,950 miles. MOT valid until 07/04/2027. Taxed until 01/04/2027.
- Make & Model
- PORSCHE 928 S
- Year / Origin
- 1990 · Birmingham
- MOT Status
- Valid until 07/04/2027
- Road Tax
- Taxed (01/04/2027)
- Recorded Mileage
- 152,950 mi
- ULEZ Compliance
- Non-Compliant (Pre-Euro 4 Petrol)
- Fuel & Engine
- PETROL · 5.0L
- Reliability Guide
- Common Faults
- Fuel Type
- PETROL
- Year
- 1990
- Engine
- 4957cc
AI-generated interpretation of this vehicle’s MOT record — not an official statement and not a substitute for an independent inspection.
BOS 1M Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 18/03/2026
- 152,950 miles recorded at latest MOT
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Roadworthiness: Excellent
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.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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BOS 1M Mileage History
- 04/03/2022143,133 mi
- 02/03/2023146,299 mi+3,166 mi
- 07/03/2024148,440 mi+2,141 mi
- 09/04/2025150,282 mi+1,842 mi
- 18/03/2026152,950 mi+2,668 mi
Average of roughly 2,431 miles per year across 5 recorded odometer readings.
BOS 1M MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 1990 Porsche 928 S (BOS 1M) between March 2022 and March 2026.
The record contains 5 passes and 0 failures.
No failures or advisories appear anywhere in the recorded tests, so the documented MOT record is relatively clean.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
A compelling example of a classic Porsche 928 S with an exceptionally clean recent MOT record. While the mileage is high, the lack of recorded defects over the last five years suggests a well-maintained vehicle.
Given the high mileage of 152,950, your primary focus should be on the comprehensive service history. Ensure there is documented evidence of timing belt and water pump changes, as these are critical maintenance items for the 4.9L engine. Request records of any major chassis or suspension overhauls, as the lack of MOT defects suggests the car is currently in good order, but wear-and-tear parts will naturally require replacement at this stage of its life.
Negotiate based on the mileage relative to other 928 S models, but acknowledge the premium associated with a car that has passed five consecutive MOTs with zero defects. Check for any evidence of previous restoration or significant bodywork to ensure the blue paintwork is original or high-quality, as this impacts the long-term collectible value.
Owning a 4.9L petrol Porsche from 1990 involves significant running costs. Fuel economy will be low, especially in urban environments, and the large engine displacement means fuel spend will be a primary monthly expense.
Insurance for a classic 928 S can vary; however, specialist classic car insurance is recommended to keep premiums manageable. Maintenance costs for these vehicles are typically high due to the complexity of the engine and the cost of genuine Porsche parts. Expect annual costs to be significantly higher than a modern equivalent.
While the MOT history from 2022 to 2026 is flawless—showing no defects at 143,133 miles through to 152,950 miles—you should still perform a physical inspection. Focus on the underside for any signs of corrosion that may not have reached the threshold of an MOT failure but could affect long-term structural integrity.
Inspect the engine bay for oil leaks and check the condition of the rubber hoses and belts. Given the vehicle's age, verify that the electrical systems are functioning correctly, as older Porsches can develop intermittent faults that are not always captured during a standard MOT test.
This 1990 Blue Porsche 928 S presents as a highly stable classic, having passed its last five MOTs without a single recorded defect. With 152,950 miles on the clock, it is a high-mileage example, but the consistency of its test results from 2022 to 2026 indicates a level of care often missing in vehicles of this age. It represents a rare find in terms of documented mechanical consistency for a 36-year-old grand tourer.
The 928 S is regarded as a robust grand tourer, though it requires meticulous maintenance to avoid costly engine failures.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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