What should I look for in a used Ford Scorpio saloon?
Buy on condition, rather than mileage. It's an old car now, and Scorpios used to be a target for clockers - crooks who wind back the mileage reading to make a profit - so unless there's a full service record backed by every MoT certificate, the mileage may not be genuine.
A stack of past bills is a good sign - better than stamps in a service book, which don't tell you what work has been done. Parts wear out on any 10-year-old car, so look for evidence of replacements and maintenance.
Specifically, pay close attention to the condition of the gearbox (especially autos), exhaust systems, brakes and suspension.
Look for rust around the rear arches, sills and front floorpan. The air-con is problematic and expensive to fix. Watch for knackered electrics, too.