Jaguar Mk IV Classic Cars for Sale

History of the Jaguar Mk IV

Manufactured directly after the Second World War from 1945 to 1949, the Jaguar Mk IV built upon the pre-war legacy of SS (Swallow Sidecars), which was renamed Jaguar in the aftermath of the war. Produced at the renowned Browns Lane factory in Coventry, the Mk IV was among the first cars to bear the Jaguar badge—marking a distinct shift from the previous 'SS' branding. The Mark IV name was applied retrospectively to differentiate these vehicles from their successor, the Mk V, as there were no official Mk I–III models produced.

Model History: 1½, 2½ and 3½ Litre Variants

The Mk IV series included three main models—1½ Litre, 2½ Litre, and 3½ Litre. All shared design roots with pre-war SS models, especially in styling and technical setup. The range included both right- and left-hand drive versions (the latter mainly for export markets like the US, with only around 287–376 left-hand drives produced, but just about 55 known today). Production ended in 1949 with the arrival of the new Mk V series.

Highlights and Features

The Jaguar Mk IV is instantly recognisable for sweeping wings, bold chrome Lucas P100 headlights, running boards, and a stately presence. Interiors feature extensive burr walnut trim, genuine leather seats with patina, and authentic period colour schemes. Left-hand drive examples are especially rare, making up only a small fraction of total production. Exported worldwide, the Mk IV quickly established Jaguar's reputation for luxury, space, and travel comfort.

Technical Data

Special Editions and Collectible Models

The most collectible examples are the Drophead Coupés and factory left-hand drive versions. Left-hand drives, with production numbers below 400 and less than sixty surviving globally, are particularly sought after. Many vehicles are accompanied by Jaguar Heritage Trust Certificates or similar historical documentation, adding to their collectability.

Weak Spots and Common Issues

No specific common issues or weaknesses are documented in the supplied data. As for all coachbuilt classics, originality and matching numbers (engine, gearbox, chassis) are highly valued among collectors. Preservation of the rare mechanical features, such as the Lucas electrical system, carburetors, drum brakes, and authentic interior materials, remains essential in the collector market.

Engine Performance, Gearbox and Handling

The 3½ Litre Mk IV delivers a strong 125 hp from its six-cylinder engine, which was regarded as advanced performance for an immediate post-war saloon. The four-speed transmission is known for its smooth and dependable action, with some enthusiasts opting for later upgrades to five-speed units. Girling drum brakes offer period-correct stopping power, albeit without the convenience of modern assistance systems. The Mk IV's robust chassis and suspension ensure ride comfort suitable for long-distance touring, particularly valued for historic rallies and ceremonial use. Popular choices include:

• Jaguar Mk IV 3½ Litre Drophead Coupé: Noted for its performance and luxury convertible qualities.
• Jaguar Mk IV 2½ Litre Saloon: Combines British craftsmanship with reliable inline-six performance.

Interior, Comfort, Exterior and Design

The Mk IV’s coachwork displays flowing pre-war lines, pronounced fenders, running boards, and lavish use of brightwork. Inside, drivers enjoy polished burr walnut dash and door trims, colour-matched leather seating, deep-pile carpeting, and classic instrumentation. Many Drophead Coupés feature beige or dark fabric soft-tops, three-position convertible roofs, central locking wheels and rare period accessories like full toolkit compartments. Original SS and early Jaguar badging exists on transitional vehicles, deepening historical appeal.

Other Noteworthy Features

Original Mk IVs often retain rare period features, such as matching-number chassis and powertrains, full toolkits, and authentic documentation (Jaguar Heritage/ASI certificates). Some cars still feature SS-Jaguar transitional branding. Vehicles with preserved factory-fitted equipment such as Birmingham carburettors, Lucas P100 headlamps, and correct wire wheels are especially valued by marque experts.

Summary

The Jaguar Mk IV range stands as an enduring testament to British craftsmanship of the post-war era. With its blend of robust technology, rare coachwork (especially Drophead Coupés and left-hand drives), and luxurious, authentically restored interiors, the Mk IV is a compelling choice for discerning enthusiasts and collectors alike.