The Series I is regarded by many as the finest XJ of all, which partly explains today’s hefty asking prices – but what do you need to know before taking the plunge?

ASKING £10,000 PRICE ENGINE 4253cc/6-cyl/DOHC POWER 200bhp@5000rpm TORQUE ...

ASKING £19,995 PRICE ENGINE 4196cc/V8/DOHC POWER 400bhp@6100rpm TORQUE ...

Despite a traditional image, Jaguar hasn’t always looked to its past. In the shadow of what might be its most dramatic shift yet, we look back at the last time Jaguar got brave.

This already rare XK150 3.8S FHC has had a fascinating life. Beautifully set up, it also drives as well as it looks

Year of manufacture 1995 Recorded mileage 158,000 Asking price £19,950 Vendor The School Garage, Whaley Bridge, Derbyshire; 01663 733209; classiccarshop.co.uk WHEN IT WAS NEW Price £45,450 Max power 3