The engines in the 1998 – 2002 Fords were brilliant.
I notice you don’t mention how brilliant the rest of the car it’s fitted to is. Ford make really good cars now, and did so starting with the first Focus and Mondeo, but the Escort just isn’t. What’s more, I’d always be suspicious of a car with that low a mileage – tends to mean it’s done lots of wearing short journeys – and why on earth own a diesel if you’re only doing 5k a year?
I’d happily have a Mondeo estate for that sort of money – actually own a 406, which is a tad bigger (at least compared to a similar vintage Mondeo). Still going pretty well for 130k – the occasional biggish bill, but I can’t believe any car of that age avoids the sort of things I have to have done, which is generally just down to normal wear and tear.