1974 Daimler Double SIX 5.3L Petrol · VDP 6
1974 Daimler Double SIX (5.3L, petrol). First registered 01 Jan 1974. MOT status: No results.
- Make & Model
- DAIMLER DOUBLE SIX
- Year / Origin
- 1974 · Worcester
- Safety Recall
- Unknown
- MOT Status
- No results
- Road Tax
- Untaxed (01 Mar 1991)
- Recorded Mileage
- —
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- PETROL · 5.3L
- 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.
VDP 6 Key Findings
- No MOT test records found for this registration
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Status
No MOT history available
No MOT test records were found for this registration. DVSA’s digital archive only covers tests from 2005, so a vehicle that has not been tested since then may legitimately have no visible history.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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Known faults for Daimler Daimler Double Six
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.
Common Problems: DAIMLER DOUBLE SIX
Known issues reported by owners and MOT testers.
- V12 Cooling System Silt Accumulation, Radiator Furring and Dropped Valve Seats(Serious)
The Jaguar all-aluminium V12 requires meticulous cooling maintenance due to its massive heat output and 20 individual coolant hoses. Neglected coolant changes allow mineral silt and corrosion sediment to clog the lower tubes of the cross-flow radiator and rear cylinder water passages. When localized overheating occurs, the aluminium cylinder head expands faster than the pressed-in steel valve seat inserts. Once press-fit tolerance is lost during extreme heat cycling, a valve seat insert loosens and drops into the combustion chamber, destroying the piston and bending valves. Remedying dropped seats requires an engine-out rebuild and peening or staking replacement inserts.
- Magneti Marelli and Lucas Ignition Amplifier / Distributor Rotor Breakdown(Serious)
Late Daimler Double Six models utilise a Magneti Marelli dual-coil digital ignition system, while earlier cars feature Lucas OPUS or Constant Energy systems. On Marelli-equipped models, high secondary ignition resistance from aged spark plugs or degraded HT leads causes internal electrical arcing through the distributor rotor body directly to the distributor drive shaft. This burns a pinhole through the rotor, killing spark to an entire six-cylinder bank. Because the fuel injectors continue spraying fuel into the dead cylinders, raw petrol floods into the catalytic converter, causing it to overheat, glow red-hot, and ignite underbody fires. Regular rotor and cap renewal is mandatory.
- Inboard Rear Brake Caliper Heat Seizure and Differential Output Seal Leaks(Moderate)
On Series 1, 2, and 3 Double Six saloons, the independent rear suspension mounts the brake calipers and discs inboard against the Salisbury differential casing. The intense radiant heat generated by the heavy V12 powertrain and exhaust pipes bakes the caliper piston seals and differential output shaft seals. Hardened diff seals allow hypoid gear oil to leak directly onto the inboard brake discs and pads, drastically reducing stopping power. Concurrently, caliper pistons seize in their bores from heat and moisture accumulation, causing severe brake drag. Rectifying the assembly requires lowering the complete rear axle subframe.
MOT Status
No MOT history available
No MOT test records were found for this registration. DVSA’s digital archive only covers tests from 2005, so a vehicle that has not been tested since then may legitimately have no visible history.
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DAIMLER DOUBLE SIX 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 1974 model year cars.
- V12 Cooling System Silt Accumulation, Radiator Furring and Dropped Valve SeatsSerious
The Jaguar all-aluminium V12 requires meticulous cooling maintenance due to its massive heat output and 20 individual coolant hoses. Neglected coolant changes allow mineral silt and corrosion sediment to clog the lower tubes of the cross-flow radiator and rear cylinder water passages. When localized overheating occurs, the aluminium cylinder head expands faster than the pressed-in steel valve seat inserts. Once press-fit tolerance is lost during extreme heat cycling, a valve seat insert loosens and drops into the combustion chamber, destroying the piston and bending valves. Remedying dropped seats requires an engine-out rebuild and peening or staking replacement inserts.
- Magneti Marelli and Lucas Ignition Amplifier / Distributor Rotor BreakdownSerious
Late Daimler Double Six models utilise a Magneti Marelli dual-coil digital ignition system, while earlier cars feature Lucas OPUS or Constant Energy systems. On Marelli-equipped models, high secondary ignition resistance from aged spark plugs or degraded HT leads causes internal electrical arcing through the distributor rotor body directly to the distributor drive shaft. This burns a pinhole through the rotor, killing spark to an entire six-cylinder bank. Because the fuel injectors continue spraying fuel into the dead cylinders, raw petrol floods into the catalytic converter, causing it to overheat, glow red-hot, and ignite underbody fires. Regular rotor and cap renewal is mandatory.
- Inboard Rear Brake Caliper Heat Seizure and Differential Output Seal LeaksModerate
On Series 1, 2, and 3 Double Six saloons, the independent rear suspension mounts the brake calipers and discs inboard against the Salisbury differential casing. The intense radiant heat generated by the heavy V12 powertrain and exhaust pipes bakes the caliper piston seals and differential output shaft seals. Hardened diff seals allow hypoid gear oil to leak directly onto the inboard brake discs and pads, drastically reducing stopping power. Concurrently, caliper pistons seize in their bores from heat and moisture accumulation, causing severe brake drag. Rectifying the assembly requires lowering the complete rear axle subframe.
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