Jaguar XJ6 Series 1: The Greatest British Saloon Ever Made
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There are luxury saloons, and then there is the Jaguar XJ6 Series 1. Launched in 1968, it redefined what a British saloon car could be. Sir William Lyons created something so right, so complete, that rivals spent the next decade trying to catch up and never quite managed it.
The XJ6 Series 1 is the purest expression of the XJ bloodline. Subsequent series refined and updated the formula, but it was this original car that had the magic. Road testers at the time ran out of superlatives. Autocar called it simply "the best saloon car in the world."
Origins and History
William Lyons had been working towards the XJ6 for years. Jaguar's saloon range in the 1960s was sprawling and fragmented, with the S-Type, 240, 340, and Mark X all jostling for position. Lyons wanted a single, definitive car to replace them all and take on Rolls-Royce, Mercedes-Benz, and BMW in one stroke.
The XJ6 arrived in September 1968 at the London Motor Show. It was priced to cause a sensation. For considerably less than a comparable Mercedes or BMW, buyers got a car that handled like a sports saloon, rode like a Rolls-Royce, and looked like nothing else on the road. The motoring press was stunned. The public queued up.
Series 1 production ran from 1968 to 1973. Engine choices were a 2.8-litre and a 4.2-litre straight-six, both twin-cam units derived from Jaguar's competition heritage. A long-wheelbase variant arrived in 1972, extending rear legroom to near-limousine proportions.
The Design
Lyons designed the XJ6's body himself, as he did with virtually every Jaguar. The result is a masterclass in restrained elegance. Long bonnet, short boot, a low roofline that sweeps gracefully rearward. Every surface is taut and purposeful, with not a single wasted line.
The slender chrome bumpers, quad round headlamps, and bold grille give the nose real presence without aggression. Inside, the cabin wraps the driver in polished walnut veneer and Connolly leather. The instrumentation is classical and clear. It feels like a gentleman's club that happens to do 120 mph.
Decades have not aged it. The Series 1 remains one of the most beautiful four-door cars ever built. Other manufacturers were producing boxy, anonymous saloons in the same period. Lyons produced a work of art.
Performance and Driving
The 4.2-litre twin-cam straight-six produces 245 bhp and pulls cleanly from low revs with a soundtrack that is pure silk. With a four-speed manual gearbox, the XJ6 would reach 60 mph in around 8.8 seconds on its way to a top speed of 124 mph. Those figures were competitive with sports cars of the era, from a five-seat luxury saloon.
The chassis is where the XJ6 becomes extraordinary. Independent suspension at all four corners, combined with Dunlop's SP Sport tyres on relatively wide alloys, gave the car handling and ride quality that engineers from other manufacturers came to study. It absorbed terrible road surfaces in near silence while remaining genuinely responsive through corners.
Driving a good XJ6 Series 1 today is a revelation. The steering is quick and communicative, the ride supremely absorbent. It is not fast by modern standards, but it moves with a grace and fluency that many modern cars simply cannot match.
Cultural Impact
The XJ6 quickly became the default choice for anyone who wanted to project authority and taste. Politicians, architects, senior barristers, and captains of industry chose it over the Germanic alternatives. It appeared regularly in British television dramas of the 1970s and became shorthand for a certain kind of understated establishment success.
The car also carried a subtle patriotic charge. At a time when British industry was struggling, Jaguar was producing something genuinely world-class in Coventry. The XJ6 was proof that Britain could still compete at the very top of the market.
Its influence extended to the racetrack too. Jaguar developed the XJ12 from the same platform, and the saloon racing derivatives of the XJ series competed vigorously throughout the 1970s, bringing the XJ nameplate considerable motorsport credibility alongside its luxury reputation.
Buying a Jaguar XJ6 Series 1 Today
Values have risen steadily as collectors recognise the Series 1 as the purest of the breed. Good usable examples in tidy condition start from around £12,000 to £18,000. Concours-quality restorations with known history can reach £35,000 and beyond, and the market has been firm in recent years.
When inspecting a car, focus on the bodywork first. Rust attacks the sills, floor pans, inner wings, and the area around the windscreen surround. A solid body is the foundation of any worthwhile XJ6. Budget generously for any restoration that involves bare metal work.
Mechanically, the twin-cam straight-six is a strong unit when properly maintained. Look for evidence of regular oil changes, a functioning cooling system, and no signs of head gasket trouble. Gearbox and differential rebuilds are available from specialists. The electrical system, typical of British cars of the era, benefits from sympathetic rewiring on many examples.
The community of XJ6 specialists and enthusiasts in Britain is excellent. The Jaguar Drivers' Club provides technical support, spares guidance, and access to knowledgeable fellow owners. Buy the best car your budget allows rather than a cheaper project, unless you have the time and skills for a full restoration.
Shop Jaguar XJ6 Series 1 Art at KK Automotive Art
Celebrate the elegance of the XJ6 with British-designed automotive artwork from KK Automotive Art. Our Jaguar pieces are available as phone cases, iPad cases, mugs, and prints, each printed to order in the UK.
Explore more British classics in our classic cars blog.