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

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem
Lotus Emeya
Opinion

This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem

A well-engineered electric performance car can be an impressive thing to drive but carrying passengers is very different from a petrol-powered equival…
2 Oct 2026
Aston Martin DBX S review – beating the Ferrari Purosangue to the top of the class
Aston Martin DBX S front
Reviews

Aston Martin DBX S review – beating the Ferrari Purosangue to the top of the class

Lots of tweaks and upgrades inside and out keep Aston Martin's SUV at the top of its game in DBX S-form
2 Oct 2026
Kia EV4 GT review – a budget Hyundai Ioniq 5 N?
Kia EV4 GT
Reviews

Kia EV4 GT review – a budget Hyundai Ioniq 5 N?

Kia says the EV4 GT is its first ever hot hatch. It’s not the last word in engagement, but a practical daily with an enthusiast’s flair
1 Oct 2026