Jaguar XJ40 Turns 40: In 2026 the Entire Range Finally Qualifies for Italy's Classic-Car Tax Break

October 1986: the hardest act to follow in Jaguar's history

On 8 October 1986, Jaguar pulled the covers off the XJ40, the saloon tasked with replacing the beloved Series III after almost two decades of production [1][2]. It was not an easy assignment. The project had started back in the 1970s and had to survive oil crises, the industrial chaos of British Leyland, and the privatisation of the marque before it ever reached showrooms. By the time it finally launched, the XJ40 was the most extensively tested car Jaguar had ever built, engineered to be simpler and cheaper to manufacture than the outgoing Series III [1].

Visually it was unmistakably still a Jaguar saloon - long, low, dignified - but more angular and unmistakably of its decade. Underneath, though, it represented a genuine technological leap for the brand: a digital dashboard, onboard diagnostics and an entirely new electrical architecture replaced the old Series III underpinnings [1]. That modernity turned out to be a double-edged sword. The digital instrument cluster, at the time, felt to some drivers more like a fruit machine than a leather-lined drawing room, and early cars picked up a reputation for electrical gremlins that has followed the model for decades [1].

Why 2026 changes the calculus for Italian buyers

Here is the part that matters most to anyone shopping for a used XJ40 today: production ended in October 1994, after roughly eight years on sale alongside the Series III until 1992 [1][2]. That means every single car that ever left the factory - including the very last one built - turned 32 years old in 2026, comfortably past the 30-year mark that triggers automatic exemption from Italy's annual road tax (bollo) on historic vehicles [7].

Until recently, that perk applied only to the earliest XJ40s from the first years of production. In 2026, for the first time, the entire model range - from the original 2.9-litre launch saloon through to the last Sovereigns and Daimlers built in 1994 - has crossed that threshold. Under Italian rules, vehicles registered more than 30 years ago qualify for automatic bollo exemption provided they are enrolled with ASI (the Italian historic-car federation) or an equivalent brand register; owners who still drive them pay only a token circulation fee, typically somewhere between 25 and 31 euros a year depending on the region [7]. Cars between 20 and 29 years old need a Certificato di Rilevanza Storica e Collezionistica issued by ASI to get a 50% reduction instead [7]. In practice, a XJ40 bought today as a weekend classic now costs roughly a tank of petrol a year in road tax, not the bill of a full-size luxury saloon in its power class.

Engines and variants worth knowing

At launch, the range offered two straight-six engines from Jaguar's new AJ6 family, replacing the venerable old XK unit: a single-cam 12-valve 2.9-litre and a twin-cam 24-valve 3.6-litre, the latter far better suited to a car of this size and weight [1]. Over its production run the lineup grew to include larger, more powerful sixes, plus specialist derivatives such as the six-cylinder Daimler for buyers chasing an extra notch of luxury and the sportier XJR [1]. Anyone shopping for a car to actually drive, rather than simply display, is generally better served by the 3.6 or later, larger-engined cars: the entry-level 2.9 is widely described as underpowered for the car's weight, with sluggish acceleration and lacklustre performance [4].

What to check before signing anything

This is not a car to buy sight unseen, and this is where due diligence really pays off. Reported issues cluster around three areas. First, electronics: false warnings such as a spurious low-coolant alert, an intermittent digital dashboard and oxidised connectors are common and usually fixable, but worth budgeting time to investigate before you commit [3][4]. Second, oil leaks around the tappet covers and breather hoses, which harden and crack with age [4]. Third, rust: like many big saloons of the late 1980s and early 1990s, the XJ40 can suffer corrosion in the usual trouble spots - wheel arches, sills, the floorpan - and this is a check best left to a specialist, ideally paired with a compression test on the engine [3][4]. The advice from buyer's guides is consistent: insist on a documented maintenance history, take a proper, unhurried test drive, and never trust the bodywork on looks alone - these saloons tend to age gracefully on the surface regardless of what lies underneath.

Prices today: the UK versus Italy

The UK remains the deepest and most liquid market for this model. There, an average-condition XJ40 is worth around £3,300 today, with a realistic entry point for a usable daily car around £4,000 and a wide choice of respectable examples opening up from about £7,000; project cars start from a few hundred pounds, while concours-condition examples can run past £10,000 [5]. Recent record sales illustrate just how polarised the market has become - one example sold at auction for over $66,000, while a tired saloon changed hands for barely over $200 [5]. In Italy, asking prices on general classifieds portals typically range from roughly €4,900 to €19,200, with the best-documented, lowest-mileage examples with a traceable service history sitting near the top of that band [6]. It is a comparatively immature market next to more celebrated British classics, which means there is genuine room to negotiate for buyers who know what to look for.

What to do if you're interested

If you are weighing up a XJ40 as a first classic or a weekend second car, the practical path is straightforward: confirm the first registration date - since every XJ40 was built by 1994, they are all genuinely historic now - ask for a complete record of electrical repairs and any rust welding, and start the ASI or brand-register enrolment early to activate the tax exemption. With a well-sorted 3.6-litre engine and a body free of nasty surprises, the XJ40 today offers one of the best ratios of British luxury-saloon presence to running cost anywhere in the classic-car market.

Sources

1. Footman James, Jaguar XJ40 at 40: The Saloon That Took the Long Road to the Future, footmanjames.co.uk, 17 July 2026, https://www.footmanjames.co.uk/blog/jaguar-xj40-at-40-the-saloon-that-took-the-long-road-to-the-future
2. Wikipedia, Jaguar XJ (XJ40), en.wikipedia.org, https://en.wikipedia.org/wiki/Jaguar_XJ_(XJ40)
3. Classics World, Jaguar XJ40 buyer's guide, classicsworld.co.uk, https://classicsworld.co.uk/guides/jaguar-xj40-buyers-guide/
4. Difetti-auto.it, Difetti Jaguar Xj Xj40 [1987 - 1995], difetti-auto.it, https://difetti-auto.it/jaguar/xj/xj40
5. The Classic Valuer, Price Guide: Jaguar XJ40 [UPDATED 2026], theclassicvaluer.com, https://www.theclassicvaluer.com/cars/jaguar/xj40
6. AutoUncle, Jaguar XJ40 usata - Prezzo da 3.500 EUR, autouncle.it, https://www.autouncle.it/it/auto-usate/Jaguar/XJ40
7. FleetMagazine, Bollo auto 2026: come si calcola e chi ne e esente, fleetmagazine.com, 3 April 2026, https://www.fleetmagazine.com/bollo-auto-emilia-romagna-2026/