Jaguar XJ6 4.2 Series 1
The first XJ6 replaced a crowded saloon range with one quiet, fast design built around independent suspension and the XK six.
Jaguar XJ6 Series I (1968).jpg · andreboeni · CC BY 2.0
Research pending
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More than a set of wheels.
By 1967 Jaguar was selling several overlapping saloon families. The XJ4 project replaced that complexity with one new body and a choice of 2.8- or 4.2-litre six-cylinder engines. Launched on 26 September 1968, the XJ6 paired William Lyons' low, restrained styling with Bob Knight's suspension work. The 4.2-litre car offered sports-car speed, a refined ride and a £2,258 launch price. Strong demand produced waiting lists and established the shape and engineering pattern that later XJ generations would develop.
Look a little closer.
Sir William Lyons' own early 4.2-litre XJ6 was the 370th right-hand-drive example built.
Photos show an example of the model or generation. The pictured vehicle’s year, equipment, or modifications can differ from the specification described here.
One car replaced a maze of saloons
Jaguar's 1967 range included 240/340, S-Type, 420G and Daimler models in nine combinations. XJ4 was not simply another addition: the strategy was to consolidate most of those roles around one new shell, two six-cylinder engines and Jaguar or Daimler identities. That rationalisation helps explain why the first XJ mattered beyond its styling.
Source: Jaguar Daimler Heritage Trust · 1968 XJ6 4.2 ↗Comfort came from controlled isolation
The launch brochure describes independent suspension at both ends, mounted on subframes that were rubber-isolated from the body. The front geometry resisted dive under braking, while the rear assembly separated wheel movement from the cabin. This was not soft suspension in place of handling; it was a deliberate attempt to deliver steering control and passenger comfort at the same time.
Source: Jaguar · 1968 XJ6 launch brochure scan ↗Where these facts come from
- Jaguar Daimler Heritage Trust · 1968 XJ6 4.2
- Jaguar · XJ Series 1 history
- Jaguar · 1968 XJ6 launch brochure scan
- Jaguar Daimler Heritage Trust · Series 1 chassis research guide
Selected facts checked for this edition. Some source pages link to broader model families. Last reviewed October 1, 2026.