Good point, i kept that in mind as well, but i guess all the other models with 1,5 lt engine are going to have less power then i8. Considering that 225i Active tourer with 2.0 lt has 231 HP, i8 should be an exception
I don't have much experience with 3 or 5 cylinder engines, really interesting what you've mentioned. I always thought the more cylinders the proper sounds the engine