It had its good points. It had big, comfortable seats, lots of room front and rear, and a big boot. This is important if you have two growing kids!
Loads of wheel travel and good damping made it ride pretty well, even on really lousy roads. One of the few positive memories I have is driving to a slate quarry in North Wales, where the road had bomb crater sized potholes which the Horizon just didn't seem to notice!
The tiny 1142cc engine seemed to cope reasonably well with lugging about nearly a ton of metal, but was very noisy, especially on the motorway.
The car had the agility of a charging bull and the stopping distance of a car ferry.
Body corrosion is an endemic problem with all Chrysler/Talbot vehicles of this era. When I part exchanged it for a Ford Escort, it was in borderline MOT pass territory.
My kids have cars of their own now, but remember the Horizon more fondly than I do. I think the body corrosion has killed them all (Horizons, that is).