The 1.2 is capable enough and is surprisingly good at motorway speeds. The twin cylinder models are undoubtedly quicker accelerating engines but I found noisy and not for me when I test drove both cars. Economy is probably lower being normally aspirated, but still returns over 50 with sensible driving and over the lifetime of the car (albeit only 2100 miles to date) trip B which has never been reset as I use trip A in between fill ups, shows the car has averaged 48.9mpg.