Description Fully restored in 2014 and only 2,369 miles since; advisory-free MOT; current owner since 2019; an exceptionally smart example of this handsome GT While the outstanding ride, handling and 150mph performance of the original XJS V12 were rightly praised by the contemporary motoring press, there was no getting away from its heavy fuel consumption and high servicing costs.

A smaller, leaner engine was needed to broaden the appeal of the car to a wider range of drivers.

So it was that in 1983 the XJS became the first model to receive Jaguar's new 24v 3.6-litre AJ6 engine, a smooth and potent unit that was not far short of the V12 in terms of outright performance but was happy to run on unleaded fuel and was in a different league for economy.

"It is the 24-valve engine's flexibility that impresses most," wrote Autocar .

"Such is its low-down pulling power that, in town and urban conditions, one rarely needs more than 2,000rpm to keep up with the traffic flow." Lighter and mor...