The Scorpio was a 2.9 V6. I never went in that car, as i already had a BMW 735. But, i grew up around the Ford Sierras. My dad's 1.6 liter I 4's were pretty gutless (75 BHP) but they were quite reliable. I remember it having a non interference engine. (cambelt snapped twice and it didn't hurt the valves - Lol)
Rust was a big issue with all 80's / early 90's Euro Fords. The Sierras were given away due to rocker, suspension turret and rear fender rust. The Scorpio was scrapped due to rear fender rust and a broken coil spring.
He now has a 2006 Ford Fiesta Turbo Diesel - nice little car - very economical. (gets over 50 on a run)
My uncle also had a Granada - an 86' 2.0 liter I 4 - i went in that car - very nice and quiet.
You can pick up any of those old Fords for dirt cheap now - they were pretty common on England's streets.