No its not a 1.3 Liter, its a 2.6 Liter. The way they calculate 1.3 is subjective. The engine is just as big as yours!!!
If you want to know more about it read sport compact car May's edition.
Do you measure your cars displacement with just the displacement of one cylinder?? Well, thats what Mazda does on its Renesis's engine.
Don't go around telling people its a 1.3 because it is clearly not.