1928 Bentley O 6.5L Petrol · HS 5148
1928 Bentley O (6.5L, petrol). First registered 25 Jun 1928. Recorded mileage 81,267 miles. MOT valid until 05 May 2027. Taxed until 01 Apr 2027.
- Make & Model
- BENTLEY O
- Year / Origin
- 1928 · Portsmouth
- Safety Recall
- Unknown
- MOT Status
- Valid until 05 May 2027
- Road Tax
- Taxed (01 Apr 2027)
- Recorded Mileage
- 81,267 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 6.5L
- 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.
HS 5148 Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 23/04/2026
- 81,267 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
HS 5148 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 1928 Bentley O (HS 5148) between February 2023 and April 2026.
The record contains 4 passes and 1 failure.
The most recent test on 23 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 (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
Recorded failure items include: “Service brake efficiency below requirements (1.2.2 (a) (i))”.
HS 5148 Mileage History
- 16/02/202373,913 mi
- 27/08/202479,000 mi+5,087 mi
- 27/08/202479,000 mi
- 07/05/202580,813 mi+1,813 mi
- 23/04/202681,267 mi+454 mi
Average of roughly 2,312 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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MOT Roadworthiness: Good
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.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
Proceed with caution and expert guidance, as this is a significant investment. While the MOT history is largely clean, the mechanical complexity of a 1928 6.5-litre Bentley requires a specialist inspection.
When purchasing a vehicle of this age and prestige, do not rely on standard modern inspection techniques. You must engage a specialist vintage Bentley mechanic to assess the 6500cc engine and the integrity of the chassis. Ensure that any recent maintenance, particularly following the 2024 brake efficiency failure, has been documented with specialist receipts.
Negotiate based on the completeness of the provenance. For a car first registered in June 1928, documentation of its history is as valuable as the metal itself. Check for evidence of recent brake system overhauls, as the 2024 failure indicates this is a critical maintenance area for this specific vehicle.
Running costs for a 1928 Bentley are significantly higher than a modern vehicle and are driven by specialist maintenance rather than daily commuting. Fuel economy will be low due to the massive 6.5-litre engine, and you should budget for high-octane, potentially leaded-replacement fuel.
Insurance will require a specialist classic car policy, and tax is typically handled differently for vehicles of this age. Expect maintenance costs to be substantial, as parts often require bespoke fabrication or sourcing from specialist heritage suppliers.
The primary area of concern is the braking system. Given the MOT failure in August 2024 for 'Service brake efficiency below requirements', you must verify that the entire braking system has been professionally refurbished and that the efficiency meets modern safety standards for a vehicle of this weight.
Additionally, inspect the engine bay for any signs of oil leaks from the 6500cc powerplant and check the condition of the chassis for any signs of fatigue or corrosion. Given the mileage has climbed from 79,000 to 81,267 in recent years, ensure the mechanical components are coping well with this increased usage.
This 1928 Bentley 'O' is a remarkable vintage specimen with a recorded mileage of 81,267 miles as of April 2026. The vehicle has maintained a consistent MOT pass record over several decades, suggesting it is a well-maintained enthusiast's vehicle. However, the single recorded MOT failure regarding brake efficiency in 2024 highlights the importance of scrutinising the stopping power of such a large-capacity vintage machine.
No aggregate reliability data is available for this specific vintage model, making individual vehicle history the most critical factor.
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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