I’ve not driven the 1.0 ecoboost, but I’ve driven a Fiat TwinAir which is similar small engine turbo engine.
Before I’d driven that, I’d have said that it was a silly idea. Low power, won’t accelerate and have to thrash it everywhere all the time. But if Ecoboost is anything like the Twin air (bigger, heavier car admittedly) then I’d seriously consider one and I think lots of people would be impressed. I loved it, it was genuinely fun to drive!
Not masses of power, but you get the power through more of the rev range which makes it faster in everyday terms.
Although they claim 60-65mpg for the Fiat Twin Air and I haven’t heard many people getting above 50.