Skip advert
Advertisement

Arden AJ 4 is a modern take on a tuned Jaguar XJ12

German tuning company Arden is to build a further 235 AJ 4s based on the 1982 Jaguar XJ12 original

During the early 80s heights of German tuners creating wonderful autobahn-bashing models like an the Alpina B7S or AMG fettled 500SL, modded Jaguars were also on the menu thanks to companies like Arden and, in particular, its AJ 4.

The AJ 4 used a Jaguar XJ12 as a base before fettling it with a range of subtle yet substantial updates. Now, 37 years after the original AJ 4 was built in 1982, the tuner has decided to do a recreation, constructing a further 235 units - if, and this seems like a significant if, it can find enough rust-free Series III XJ12s to build them with.

Advertisement - Article continues below

> Click here for our review of the modern Jaguar XJR575

Starting under the forward tilting bonnet, new AJ 4s will benefit from a modified version of the original 5.3-litre HE V12 engine. As was the case in 1982, the fuel injected unit will be raised from the standard (German market) 261bhp, to a more punchy 316bhp with changes to the (very simple) ECU, a bespoke intake manifold and a free-slowing sports exhaust. The four-speed auto transmission (which was engineered by Arden in the first place) is also mildly uprated, keeping that extra grunt in check.

The XJs suspension and chassis has also, thankfully, been paid some attention. New, modern springs and dampers help contain the body’s movement without affecting the ‘magic carpet’ ride while uprated brakes work on 18-inch forged wheels with modern tyres. 

The XJ’s svelte bodywork is also given a subtle overhaul, complete with the previous Arden AJ 4’s black, ribbed Daimler-like front grille and substantial de-chromeing of the bodywork. As per so many of these high-end retrospective models, final colour and trim is completely up to the individual owner’s discretion, although we suspect the dark racing green exterior, and Oyster-coloured interior will be a popular choice among many.

The first car in the new Arden AJ 4 series has already delivered to its new owner but information on how much this car will actually set you back remains elusive.

Skip advert
Advertisement
Skip advert
Advertisement

Most Popular

Kia K4 2026 review – can it fill the gap left by the Ford Focus?
Kia K4 – front
Reviews

Kia K4 2026 review – can it fill the gap left by the Ford Focus?

With Ford killing the Focus, there’s space in the market for a semi-premium family hatch to take on the Volkswagen Golf. Kia hopes to fill it with the…
23 Mar 2026
The Land Rover Defender's toughest test: how the D7X-R triumphed at the Dakar Rally
Defender D7XR
Features

The Land Rover Defender's toughest test: how the D7X-R triumphed at the Dakar Rally

The Defender D7X-R is tackling the world’s most gruelling off-road race, and unlike many competition cars, this one has strong ties to a car we know w…
24 Mar 2026
Best German cars – performance greats from BMW M, Porsche, AMG and more
Best German cars
Best cars

Best German cars – performance greats from BMW M, Porsche, AMG and more

From Audi to Volkswagen and all in between, Germany has created some outstanding performance cars over the years, and these are some the best
27 Mar 2026