Jaguar XJ6 (Series 2): A Comprehensive Guide
The Jaguar XJ6, a cornerstone of British automotive history, represents the epitome of luxury and sporting saloon design. Produced by Jaguar Cars from 1968 to 1992 across several series, the XJ6 was intended to be a modern replacement for Jaguar's existing range of saloons and embodied elegance, performance, and advanced engineering for its time. This guide focuses specifically on the Series 2 XJ6 (and XJ12) models, a pivotal point in the XJ's evolution.
What Class of Car is it?
The Jaguar XJ6 is classified as a full-size luxury sedan (or saloon in British terms). It competed with other high-end vehicles of its era, such as the Mercedes-Benz S-Class and BMW 7 Series, though the XJ's focus was often perceived as more sporting and driver-focused.
Generations
- Series 1 (1968-1973): The original XJ6, featuring elegant styling and a 4.2L straight-six engine. Notable for its clean lines and sophisticated suspension.
- Series 2 (1973-1979): This is the focus of this guide. Major changes included a raised front bumper for improved crash protection and a revised interior. The XJ12 was also available in Series 2.
- Series 3 (1979-1992): Featuring a Pininfarina-designed restyle with integrated bumpers and a revised roofline. The last of the "classic" XJ6 models.
- XJ40 (1986-1994): A significantly redesigned car, marking a departure from the original XJ's styling. It introduced new engines and electronic systems.
Reliability & Common Issues (Series 2)
The Series 2 XJ6, while beautiful and enjoyable to drive, has its share of potential problems. Understanding these issues is crucial for prospective buyers.
Engine
The 4.2-liter straight-six engine is generally robust, but requires diligent maintenance. Common issues include:
- Cooling System: Overheating is a significant concern. Regular coolant changes, radiator maintenance, and thermostat checks are essential. Look for signs of head gasket failure (milky oil, excessive coolant loss).
- Carburetor Issues: The original carburetors (Stromberg or SU) can be finicky and require regular tuning. Many owners have converted to electronic fuel injection for improved reliability.
- Oil Leaks: Significant oil leaks from various seals and gaskets are common, especially as the car ages.
- Timing Chain: While durable, the timing chain and tensioner should be inspected periodically, especially on higher-mileage examples.
Transmission
The Borg-Warner Model 12 automatic transmission (most common) is generally reliable, but:
- Shifting Issues: Check for smooth and positive shifts. Jerky or delayed shifts can indicate wear or low fluid levels.
- Fluid Leaks: Transmission fluid leaks are also common.
Electrical System
Lucas electrics, notorious for their unreliability, are a major concern. Expect to deal with:
- Wiring Issues: Deteriorating wiring, corroded connections, and poor grounding can cause a variety of electrical problems.
- Charging System: Alternator and regulator issues are frequent.
- Lighting: Intermittent lighting problems are common due to faulty switches and wiring.
Suspension & Brakes
The independent suspension provides a comfortable ride, but requires maintenance:
- Rear Suspension: The rear suspension is complex. Check for worn bushings, sagging springs, and leaking dampers.
- Brakes: Inspect brake lines for corrosion and ensure proper function. The inboard rear brakes can be expensive to repair.
Body & Interior
- Rust: Rust is a significant concern, especially in areas prone to moisture. Check the sills, floor pans, wheel arches, and around the windscreen.
- Interior Condition: Leather upholstery, wood trim, and headlining can deteriorate over time. Check for cracks, tears, and sagging.
- Climate Control: The air conditioning system is often unreliable and expensive to repair.
Driving Experience
Pros:
- Elegant Styling: The Series 2 XJ6 is a beautiful car with classic Jaguar lines.
- Comfortable Ride: The independent suspension provides a smooth and comfortable ride, ideal for long journeys.
- Smooth Engine: The 4.2-liter straight-six engine is smooth and refined, providing adequate performance.
- Luxurious Interior: The interior is well-appointed with leather upholstery and wood trim.
Cons:
- Reliability Issues: As mentioned above, the Series 2 XJ6 is prone to a variety of mechanical and electrical problems.
- Running Costs: Fuel consumption can be high, and maintenance can be expensive.
- Parts Availability: While many parts are still available, some can be difficult to source.
- Slow Performance (compared to modern cars): Although adequate for its time, performance is not on par with modern vehicles.
Buying Advice
What Years to Look For:
While all Series 2 XJ6s have their quirks, later models (1977-1979) may benefit from some incremental improvements. However, condition is paramount. A well-maintained early model is often preferable to a neglected later one.
What to Avoid:
- Cars with Significant Rust: Rust repair can be very expensive. Avoid cars with extensive rust in critical structural areas.
- Cars with Major Mechanical Problems: Major engine or transmission repairs can be costly. Look for cars that have been well-maintained and are in good running order.
- Cars with Extensive Electrical Problems: Diagnosing and repairing electrical problems can be time-consuming and frustrating.
- Cars that have been heavily modified: Unless the modifications are well-documented and professionally installed, avoid cars that have been significantly altered.
Tips for Buyers:
- Get a Pre-Purchase Inspection: Have a qualified mechanic familiar with classic Jaguars inspect the car before you buy it.
- Check the Service History: Look for evidence of regular maintenance, including oil changes, coolant flushes, and tune-ups.
- Test Drive the Car Thoroughly: Pay attention to engine performance, transmission shifting, suspension, and brakes.
- Negotiate the Price: Be realistic about the car's condition and factor in potential repair costs.
- Join a Jaguar Owners Club: Connecting with other XJ6 owners can provide valuable advice and support.
The Jaguar XJ6 Series 2 is a rewarding classic car to own, but it requires dedication and a willingness to address its potential problems. With careful research and a thorough inspection, you can find a beautiful and enjoyable example that will provide years of driving pleasure.
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