The 1985 Jaguar XJ6 represents the Series III iteration of Jaguar's iconic luxury four-door sedan. Produced from 1979 to 1992, the Series III XJ6, penned by Pininfarina, is renowned for its timeless, elegant body style. Key trims included the standard XJ6, the more upscale Sovereign, and the ultra-luxurious Vanden Plas. It stands out for its graceful lines, plush interior, and exceptionally smooth ride, embodying classic British motoring prestige that continues to captivate enthusiasts.
The Good
The 1985 Jaguar XJ6 offers unparalleled comfort with its supple ride and opulent leather and wood interior. Its timeless, elegant design provides immense emotional appeal and classic car prestige. While not a performance leader, its inline-six engine delivers smooth power. For practical buyers, well-maintained examples offer classic car value and a unique driving experience at an accessible acquisition price.
The Bad
Known weaknesses for the 1985 Jaguar XJ6 primarily revolve around its "Lucas electrics," leading to various electrical gremlins. Overheating, rust (especially sills and wheel arches), and problematic air conditioning systems are also common. Maintenance costs can be substantial due to specialized parts and the complexity of repairs.
1985 Jaguar XJ6: Quick Overview
- Engine Options: For the US market, the 1985 XJ6 typically featured Jaguar's venerable 4.2-liter (4235cc) DOHC inline-six cylinder engine. Other markets sometimes received a 3.4-liter version. The 4.2L engine in 1985 was fuel-injected (Bosch L-Jetronic).
- Horsepower: Approximately 176 horsepower at 4750 rpm and 219 lb-ft of torque at 2500 rpm for the 4.2-liter engine (US specification).
- Fuel Economy: Fuel economy was not a strong suit. EPA estimates for the 4.2L engine typically ranged around 14-16 MPG combined (e.g., 12 MPG city / 18 MPG highway), depending on driving conditions and exact tuning. Premium unleaded fuel was generally recommended or required.
- 0-60 Times: The 1985 XJ6 with the 4.2L engine usually achieved 0-60 mph acceleration in approximately 9.0 to 10.0 seconds, which was respectable for a luxury sedan of its size and era.
- Towing Capacity: The 1985 Jaguar XJ6 was not designed or officially rated for significant towing. While a very light utility trailer might be technically possible, it is not recommended due to potential strain on the drivetrain, cooling system, and chassis. Most owners avoid towing with these vehicles.
- Trim-Level Features:
- XJ6 (Base): Included standard luxury features like leather upholstery, power windows, central locking, automatic climate control, a high-quality audio system (AM/FM cassette), and power-assisted steering and brakes.
- Sovereign: Stepped up in luxury with additional wood trim, deeper pile carpets, sometimes unique alloy wheels, an electric sunroof as standard, and further refined interior appointments.
- Vanden Plas: The pinnacle of luxury for the Series III. It featured even more exclusive leather upholstery (often fluted), rear picnic tables, enhanced wood veneer on dashboards and door caps, additional sound deadening, standard sunroof, and unique exterior badging. These models offered the most opulent interior experience.
1985 Jaguar XJ6 Specifications
Vehicle Information
| Year | 1985 |
| Make | Jaguar |
| Model | XJ6 |
| Trim | - |
| Style | - |
| Type | Sedan |
| Category | Compact Car |
Manufacturing Details
| Made In | United Kingdom |
| Manufacturing City | - |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 5.3 L 12-Cyl. |
| Engine Size | 5.3L |
| Engine Cylinders | 12 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1985 Jaguar XJ6 Have?
The 1985 Jaguar XJ6, like many Jaguars of its era, is notorious for several frequently reported problems, primarily impacting long-term reliability. The most infamous concern is the electrical system, often attributed to "Lucas, the Prince of Darkness." Owners commonly experience issues with power windows, central locking, gauges, indicator lights, windshield wipers, and even ignition components due to brittle wiring, failing relays, and faulty switches. These problems can be intermittent and challenging to diagnose.
Another significant area of concern is the cooling system. Original radiators, water pumps, thermostats, and hoses are prone to failure, leading to overheating, which can severely damage the engine. Proactive replacement and regular maintenance of the cooling system are crucial. The air conditioning system is also a frequent failure point, often suffering from leaks, compressor failures, and expensive R12 refrigerant conversions.
Rust is a pervasive issue, especially in climates exposed to road salt or high humidity. Common rust spots include the sills, wheel arches, floorpans, subframe mounts, and around the front and rear screens. Fuel system problems can also arise, such as failing fuel pumps, clogged filters, and issues with the Bosch L-Jetronic fuel injection system. Suspension components, particularly bushings and ball joints, wear out over time, affecting ride quality and handling.
Regarding recalls, few major recalls were specific to the 1985 model year, as many significant design issues had been addressed in earlier Series III production. However, owners should always check for any outstanding minor safety-related recalls that might apply, often related to brake or fuel line components. Overall, while the mechanicals (engine, transmission) can be robust if properly maintained, the ancillary systems demand constant attention and investment for reliable operation.
Another significant area of concern is the cooling system. Original radiators, water pumps, thermostats, and hoses are prone to failure, leading to overheating, which can severely damage the engine. Proactive replacement and regular maintenance of the cooling system are crucial. The air conditioning system is also a frequent failure point, often suffering from leaks, compressor failures, and expensive R12 refrigerant conversions.
Rust is a pervasive issue, especially in climates exposed to road salt or high humidity. Common rust spots include the sills, wheel arches, floorpans, subframe mounts, and around the front and rear screens. Fuel system problems can also arise, such as failing fuel pumps, clogged filters, and issues with the Bosch L-Jetronic fuel injection system. Suspension components, particularly bushings and ball joints, wear out over time, affecting ride quality and handling.
Regarding recalls, few major recalls were specific to the 1985 model year, as many significant design issues had been addressed in earlier Series III production. However, owners should always check for any outstanding minor safety-related recalls that might apply, often related to brake or fuel line components. Overall, while the mechanicals (engine, transmission) can be robust if properly maintained, the ancillary systems demand constant attention and investment for reliable operation.
How long will the 1985 Jaguar XJ6 last?
A 1985 Jaguar XJ6, with diligent maintenance, can easily achieve 100,000 to 150,000 miles, and some well-cared-for examples exceed 200,000. These vehicles are now 39 years old, showcasing significant long-term durability for their core mechanical components, particularly the robust 4.2L engine, provided the cooling system is impeccable. However, this longevity hinges entirely on proactive and often expensive maintenance.
Long-term weaknesses are primarily the continuous degradation of rubber components (bushings, seals, hoses), electrical wiring insulation, and the relentless march of rust. The air conditioning system and power window motors are almost guaranteed to fail over decades. While the engine block and transmission are sturdy, the myriad of supporting systems requires constant vigilance and replacement, making "set it and forget it" ownership impossible. It's a car that demands ongoing care to remain a reliable classic.
Long-term weaknesses are primarily the continuous degradation of rubber components (bushings, seals, hoses), electrical wiring insulation, and the relentless march of rust. The air conditioning system and power window motors are almost guaranteed to fail over decades. While the engine block and transmission are sturdy, the myriad of supporting systems requires constant vigilance and replacement, making "set it and forget it" ownership impossible. It's a car that demands ongoing care to remain a reliable classic.
What Technology & Safety Features are Included?
The 1985 Jaguar XJ6, being a product of its time, featured relatively rudimentary built-in technology compared to modern vehicles. The "tech" primarily revolved around convenience and luxury, not digital integration or advanced computing. The dashboard was dominated by traditional analog gauges for speed, RPM, oil pressure, water temperature, fuel level, and a clock. There was a basic trip computer on some higher trims, offering simple calculations.
For entertainment, the standard setup included an AM/FM stereo radio with a cassette player. Higher trim levels, like the Vanden Plas, often came with upgraded sound systems featuring more speakers and potentially a graphic equalizer, providing a premium audio experience for the mid-1980s. Connectivity options were non-existent, and there was no provision for CD players, auxiliary inputs, or Bluetooth.
Driver-assistance features were limited to what was standard in luxury cars of that era. This included power-assisted steering, power-assisted brakes (often with vacuum boost), and cruise control, which was standard on most models. There were no modern driver-assistance aids such as anti-lock braking systems (ABS - though available on some German rivals, it was not standard or common on the '85 XJ6), traction control, stability control, or parking sensors. Drivers were entirely responsible for all aspects of vehicle operation.
Safety features were also rudimentary by today's standards. The vehicle was equipped with three-point seatbelts for front occupants and lap belts for rear passengers. There were no airbags (driver or passenger), no side-impact protection beams, and crumple zones were basic compared to contemporary designs. Crash-test ratings as we know them today (from organizations like NHTSA or IIHS) were not performed on vehicles of this vintage, so no official ratings are available. Owners should understand that the passive safety provided by this vehicle is significantly less than that of any modern car.
For entertainment, the standard setup included an AM/FM stereo radio with a cassette player. Higher trim levels, like the Vanden Plas, often came with upgraded sound systems featuring more speakers and potentially a graphic equalizer, providing a premium audio experience for the mid-1980s. Connectivity options were non-existent, and there was no provision for CD players, auxiliary inputs, or Bluetooth.
Driver-assistance features were limited to what was standard in luxury cars of that era. This included power-assisted steering, power-assisted brakes (often with vacuum boost), and cruise control, which was standard on most models. There were no modern driver-assistance aids such as anti-lock braking systems (ABS - though available on some German rivals, it was not standard or common on the '85 XJ6), traction control, stability control, or parking sensors. Drivers were entirely responsible for all aspects of vehicle operation.
Safety features were also rudimentary by today's standards. The vehicle was equipped with three-point seatbelts for front occupants and lap belts for rear passengers. There were no airbags (driver or passenger), no side-impact protection beams, and crumple zones were basic compared to contemporary designs. Crash-test ratings as we know them today (from organizations like NHTSA or IIHS) were not performed on vehicles of this vintage, so no official ratings are available. Owners should understand that the passive safety provided by this vehicle is significantly less than that of any modern car.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
1985 Jaguar XJ6 Prices and Market Value
When new in 1985, a Jaguar XJ6 4.2L typically retailed for approximately $30,000 to $35,000 USD, while the more luxurious Vanden Plas variant could reach over $40,000. Like most luxury cars, these vehicles experienced steep initial depreciation over their first decade.
Today, current used market prices vary dramatically based on condition. Project cars needing extensive work can be found for $3,000 to $8,000. Good, drivable examples in fair condition typically range from $8,000 to $15,000. Concours-quality or exceptionally low-mileage, pristine examples can command $15,000 to $30,000 or even more, with top Vanden Plas models often fetching the highest prices. Factors severely affecting resale value include rust, electrical problems, deferred maintenance, and non-original modifications. Conversely, comprehensive service history, originality, and excellent overall condition significantly boost value, indicating a nascent appreciation as a desirable classic.
Today, current used market prices vary dramatically based on condition. Project cars needing extensive work can be found for $3,000 to $8,000. Good, drivable examples in fair condition typically range from $8,000 to $15,000. Concours-quality or exceptionally low-mileage, pristine examples can command $15,000 to $30,000 or even more, with top Vanden Plas models often fetching the highest prices. Factors severely affecting resale value include rust, electrical problems, deferred maintenance, and non-original modifications. Conversely, comprehensive service history, originality, and excellent overall condition significantly boost value, indicating a nascent appreciation as a desirable classic.
1985 Jaguar XJ6 Cost of Ownership
Ownership of a 1985 Jaguar XJ6 is decidedly costly, not economical. Insurance can be reasonable if obtained through a specialist classic car insurer, but standard policies might be higher. Fuel costs are significant due to its thirsty 4.2L engine, typically consuming premium unleaded fuel at a rate of 12-16 MPG. Maintenance is demanding; this car requires consistent, proactive attention and often specialized parts and labor. Repairs for common issues like electrical gremlins, cooling system failures, and A/C overhauls can be very expensive. Long-term ownership involves budgeting for continuous upkeep, making it a passion project rather than a practical daily driver for those seeking low running costs. Expect significant financial investment beyond the purchase price.
1985 Jaguar XJ6 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
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City Mileage
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Highway Mileage
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1985 Jaguar XJ6 Insurance
Insurance for a 1985 Jaguar XJ6 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1985 Jaguar XJ6 Compare to Other Sedan?
When stacked against its key rivals of the era, the 1985 Jaguar XJ6 offered a unique blend of style and comfort but fell short in certain practical aspects.
Recommendation: For absolute reliability and long-term practical ownership, the Mercedes-Benz W126 S-Class is a better alternative. If driving dynamics are paramount, the BMW E23 7-Series offers a compelling package. However, if classic British charm, an unparalleled smooth ride, and timeless elegance are the primary desires, the Jaguar XJ6 stands alone in its unique appeal despite its quirks.
- Mercedes-Benz W126 S-Class (e.g., 380SE/SEL, 420SE/SEL):
- Performance: Mercedes models often offered similar or slightly better acceleration and more robust highway cruising, with a generally more Germanic, solid feel.
- Features: Comparable luxury features; Mercedes often had a more "engineered" approach to luxury.
- Reliability: The W126 is widely considered the gold standard for reliability and durability in its class, far surpassing the XJ6. Their systems, though complex, were built to last.
- Price: New, they were similarly priced, often slightly higher. Used, a well-maintained W126 typically holds a higher value due to its reputation for longevity.
- BMW E23 7-Series (e.g., 735i):
- Performance: BMW offered a sportier, more driver-focused experience with tauter handling and a more direct feel. Its inline-six engines were also highly respected.
- Features: Competitive luxury and technology, with a slightly more contemporary aesthetic.
- Reliability: Better than the Jaguar, though not as bulletproof as the Mercedes. Electrical and cooling issues were present but less pervasive.
- Price: Similar new prices to the XJ6, with used values falling between Jaguar and Mercedes, depending on condition.
- Cadillac Fleetwood Brougham / Lincoln Town Car:
- Performance: Emphasized a softer, floatier ride over European-style handling dynamics. Engines were often larger V8s but not necessarily more powerful.
- Features: Focused on American luxury – spacious, opulent, often with unique convenience features.
- Reliability: Generally simpler systems than the European rivals, leading to potentially lower repair costs, but overall build quality could be less refined.
- Price: Often significantly less expensive new, and now typically much cheaper on the used market, offering more "car for the money" in terms of size and presence.
Recommendation: For absolute reliability and long-term practical ownership, the Mercedes-Benz W126 S-Class is a better alternative. If driving dynamics are paramount, the BMW E23 7-Series offers a compelling package. However, if classic British charm, an unparalleled smooth ride, and timeless elegance are the primary desires, the Jaguar XJ6 stands alone in its unique appeal despite its quirks.
Final Verdict: Is the 1985 Jaguar XJ6 a Good Sedan?
The 1985 Jaguar XJ6 is ideal for enthusiasts, classic car collectors, and individuals who prioritize timeless British style, exceptional ride comfort, and a rich heritage over modern reliability and convenience. It's a car for those who enjoy the process of ownership as much as the drive itself.
It is absolutely worth buying, but only under very specific conditions. Firstly, you must buy it used, as new is obviously not an option. Secondly, and critically, buy the absolute best example you can afford. A cheap XJ6 will inevitably become an expensive nightmare. Look for cars with comprehensive service records, minimal rust, and well-functioning electrics. The Vanden Plas trim offers the pinnacle of luxury, but any well-maintained XJ6 is rewarding. It is not a vehicle for a frugal daily commute; rather, it's a weekend cruiser or a cherished project that demands a dedicated budget for ongoing maintenance and a patient, understanding owner who appreciates its unique character, quirks and all. It's a labor of love, not a logical purchase.
It is absolutely worth buying, but only under very specific conditions. Firstly, you must buy it used, as new is obviously not an option. Secondly, and critically, buy the absolute best example you can afford. A cheap XJ6 will inevitably become an expensive nightmare. Look for cars with comprehensive service records, minimal rust, and well-functioning electrics. The Vanden Plas trim offers the pinnacle of luxury, but any well-maintained XJ6 is rewarding. It is not a vehicle for a frugal daily commute; rather, it's a weekend cruiser or a cherished project that demands a dedicated budget for ongoing maintenance and a patient, understanding owner who appreciates its unique character, quirks and all. It's a labor of love, not a logical purchase.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.