1986 Bentley Turbo 6.8L Petrol · C407 FWT
1986 Bentley Turbo (6.8L, petrol). First registered 14 Feb 1986. Recorded mileage 75,003 miles. MOT valid until 06 Apr 2027.
- Make & Model
- BENTLEY TURBO
- Year / Origin
- 1986 · Cardiff
- Safety Recall
- Unknown
- MOT Status
- Valid until 06 Apr 2027
- Road Tax
- —
- Recorded Mileage
- 75,003 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 6.8L
- 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.
C407 FWT Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 08/04/2026
- 75,003 miles recorded at latest MOT
- 2 historical MOT failures
- No defects recorded at the latest MOT
- Recurring brakes items (2 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
C407 FWT 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 1986 Bentley Turbo (C407 FWT) between February 2024 and April 2026.
The record contains 3 passes and 2 failures.
The most recent test on 08 April 2026 was a pass, although the earlier record includes 2 failures that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Brakes (2 issues), Suspension (2 issues), Steering (1 issue), Exhaust & Emissions (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 1 advisory notice is 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: “Exhaust emits excessive dense blue smoke during acceleration (8.2.1.2 (g))”; “Nearside Rear Shock absorbers has a serious fluid leak (5.3.2 (b))”; “Power steering component leaking (2.1.5 (a))”.
C407 FWT Mileage History
- 05/03/202473,961 mi
- 13/03/202574,443 mi+482 mi
- 31/03/202674,994 mi+551 mi
- 08/04/202675,003 mi+9 mi
Average of roughly 498 miles per year across 4 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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Known faults for Bentley Bentley Turbo R
Our database tracks 3 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.
Vehicle & Plate History
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BENTLEY TURBO 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 1986 model year cars.
- High-Pressure Hydraulic Brake Accumulator and Mineral Oil System FailureSerious
The Turbo R utilises a Citroën-licensed high-pressure dual-circuit hydraulic braking and self-levelling suspension system powered by two engine-driven mechanical pumps. Over time, the nitrogen-filled spherical brake accumulators lose their charge, internal seals in the brake distribution valves degrade, and corrosive mineral fluid (or incorrect DOT fluid mistakenly added) ruins the internal rubber seals. This causes rapid pedal stiffening, delayed braking assistance, and pump cavitation.
- Exhaust Manifold Cracking and Gasket Blow-ByModerate
The cast iron exhaust manifolds and heat-cycling gaskets on the turbocharged 6.75-litre V8 undergo intense thermal expansion and contraction cycles. The massive heat retained in the SZ engine bay causes the cast iron manifolds to warp or develop hairline fissures, while the copper-clad composite manifold gaskets burn through, creating sharp ticking exhaust leaks on cold startup that can damage cylinder head studs.
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