Jaguar is a name synonymous with luxury and performance, and this vehicle manufacturer has produced some of the most iconic vehicles in automotive history.
Among these, the Jaguar E-Type Series I, II, and III and Jaguar XJ Series I, II, and III models stand out as the pinnacle of classic car design and engineering.
These models reflect the technological advancements and changing consumer tastes of their times.

The Jaguar E-Type Series I, II, and III

The Jaguar E-Type was produced from 1961 to 1975.

Series I (1961-1968)

• Started with a 3.8-liter engine, and later upgraded to a 4.2-liter engine.
• Set performance benchmarks for the era.
• Iconic features included glass-covered headlights, a small grille, and sleek lines.
• High performance with top speeds around 150 MPH.
• Aesthetically elegant, highly valuable, and sought after.

Series II (1968-1971)

• Responded to changes in U.S. safety and emissions regulations.
• Design/mechanical changes: larger air intakes, repositioned headlights, larger rear taillights.
• Retained the 4.2-liter engine; performance was slightly affected by emissions changes.
• Improved practicality with better cooling and brakes.

Series III (1971-1975)

• Significant departure with a new 5.3-liter V12 engine.
• Enhanced performance and driving experience.
• Longer wheelbase for the larger engine.
• Standard power steering and uprated brakes.
• Distinguishable design: large front grille, flared wheel arches.
• Shifted towards a grand tourer with a powerful V12 engine.

Engine and Performance

Jaguar E-Type Special Editions

• Featured power-assisted steering and leather upholstery as standard on the 2.8 L De Luxe and 4.2 L models.
• Utilized 2.8-litre and 4.2-litre straight-six engines, replacing most of Jaguar's saloons from the 1960s.
• Carried over the widest version of Jaguar's IRS unit from previous models.

• Launched in late 1973 as a facelift of the 1968 original.
• Redesigned in response to worldwide safety and emissions legislation, featuring a higher bumper and a redesigned front end.
• Available in two lengths, with the Vanden Plas specification available on the 4.2-litre Daimler Sovereign.
• Introduced the XJC, a two-door pillarless coupe, available as both Jaguar and Daimler with 4.2-litre and 5.3-litre engines.

• Produced from 1979 to 1987 for the XJ6 version and up to 1992 for the XJ12 version.
• Redesign by Italian design house Pininfarina, featuring thicker rubber bumpers, flush door handles, a vertical grille, and narrower door frames.
• Offered in base, Sovereign, and Vanden Plas models.
• Retained the 4.2-liter six-cylinder/BW66 combination used in earlier series, with a 5.3-liter V12/Turbo 400 combination available outside the United States.

Engine and Performance

The Series I and II predominantly featured the 4.2-liter six-cylinder engine, known for its balance of performance and refinement.
The Series II maintained this engine but introduced modifications to comply with stricter emissions standards, slightly impacting performance.
The Series III offered a significant upgrade with the introduction of the 5.3-liter V12 engine, enhancing the XJ's performance and solidifying its status as a luxury sedan with exceptional driving dynamics.

Jaguar XJ Special Editions

The last 100 cars of the Series III XJ built in 1992 were part of a special series commemorating the end of production. These cars had the option of a brass plaque located in the cabin.
Another notable special release is the 2019 Jaguar XJ Collection Special Edition, which was announced as an addition to the XJ model lineup. This version was created to celebrate the end of the current generation XJ's production run and was limited to just 300 units, making it one of the most exclusive XJ models ever produced.

Jaguar E-Type vs. Jaguar XJ: Performance

The Jaguar E-Type and Jaguar XJ are two iconic models from the British luxury car manufacturer, each representing different aspects of Jaguar's design and engineering philosophy. The E-Type, known for its stunning aesthetics and sports car performance, contrasts with the XJ's focus on luxury, comfort, and executive travel.

Here's a comparative look at their performance characteristics.
Performance highlights of the Jaguar E-Type include:

• Engine variants: The E-Type was initially equipped with a 3.8-liter engine, later upgraded to a 4.2-liter inline-six, providing robust performance figures for its era. The Series III introduced a 5.3-liter V12, enhancing its performance further.
• Top speed and acceleration: The E-Type's performance was groundbreaking at its launch, with the 3.8 model achieving a top speed of 153 mph and accelerating from 0-60 MPH in 6.7 seconds. The 4.2-liter variant slightly reduced the top speed to 151 MPH but maintained impressive acceleration.
• Racing heritage: The E-Type's design was heavily influenced by Jaguar's D-Type racer, contributing to its excellent performance. Its racing record, particularly in its debut season, was impressive, showcasing its capabilities on the track.

Performance highlights of the Jaguar XJ include:

• Engine variants: The XJ has been offered with a range of engines, from a supercharged 3.0-liter V6 in more recent models to the powerful 5.0-liter supercharged V8, which delivers 575 horsepower and achieves a top speed of 174 MPH. The V8 variant can accelerate from 0-60 MPH in just 4.2 seconds.
• Ride and handling: The XJ combines luxury with performance, offering agile handling and a firm ride that distinguishes it from many of its class rivals. Despite its size, the XJ manages to feel nimble and responsive, a testament to its advanced suspension system and lightweight construction.
• Performance across generations: Throughout its generations, the XJ has balanced the need for executive comfort with the desire for a fast car that handles well.

Jaguar E-Type Series vs. Jaguar XJ Series: Restoration Challenges

Restoring a classic Jaguar, whether it's an E-Type or an XJ Series, is both exciting and challenging. Each model comes with its own set of difficulties that can test the patience and skill of even the most experienced restorers.
Jaguar E-Type Series restoration challenges can include:

• Complexity and cost: The E-Type's intricate design and engineering mean that a full restoration can be complex and costly. Parts may be expensive or difficult to source, and specialized knowledge is often required to address the unique mechanical and bodywork issues.
• Rust and bodywork: Rust is a common issue, particularly in the E-Type's monocoque chassis, which can be labor-intensive to repair. Body panels may require fabrication or replacement, and achieving the correct alignment and gaps can be challenging.
• Engine rebuilds: The E-Type's engines, whether the inline-six or the V12, often require a complete rebuild, which can include machining, sourcing rare parts, and fine-tuning to original specifications.
• Over-restoration: There's a tendency to over-restore E-Types, which can detract from their originality and character. Restorers must balance making improvements with maintaining the car's authenticity.

Jaguar XJ Series restoration challenges can include:

• Rust and corrosion: Like the E-Type, the XJ Series cars are prone to rust, especially in the floor pans, sills, and wheel arches. Repairing or replacing these areas requires skillful metalwork.
• Mechanical and electrical issues: The XJ's complex mechanical and electrical systems can present significant restoration challenges. Issues with engine performance, braking systems, and electrical faults are common and can be difficult to diagnose and repair.
• Interior restoration: The XJ's interior, with its wood, leather, and plastic components, can be expensive to restore to its original condition. Matching materials and finishes is essential for maintaining the car's value and appeal.
• Market value considerations: Restoring an XJ may not always be financially viable, given the market value of these cars. If you plan on restoring and selling, it's important to consider whether the cost of restoration will be recouped upon sale, especially for less rare models like the XJ6.

Restoring a Jaguar E-Type or XJ Series is a significant undertaking that requires a high level of expertise. All models have their own unique restoration challenges.

Conclusion

The Jaguar E-Type and XJ Series are two distinct yet equally important chapters in Jaguar's history.
The E-Type, with its sports car performance and racing heritage, embodies the spirit of the 60s.
The XJ Series is all about luxury, comfort, and executive travel. It showcases Jaguar's ability to create a high-performance luxury sedan that stands the test of time.
Both Jag models have made tracks in the automotive world, and their legacy continues to influence Jaguar's design and engineering philosophy.
Whether it's the thrill of driving an E-Type or the refined comfort of an XJ, both cars offer the performance, luxury, and design innovation that made Jaguar famous. Do you have a restoration project you’d like to start? Contact our team of Jaguar experts to start your build today.