Originally Posted by Lee Reynolds
I understand all this

But, why do manufacturers like ford sell bigger engined cars then? Whats the point to them?
Ie why sell a focus with the choice of 1.6, 1.8 and 2.0 litre engines?
Why not all be 1.6 with the choice of 1.6 std, 1.6 bigger air flow, 1.6 even bigger air flow...???
Gen question...
Probably reliability is a major factor as well Lee, if you start pushing up the BHP per litre it would become costly for manufacturers to replace engines all the time.
I know Honda and the like can make it reliable, but when you think how many div's manage to kill a fairly tame/standard focus through lack of maintenance, imagine what it would be like if they were a bit more delicate
Also I bet drivability comes into it as well, a bigger engine is quite lazy and effortless to drive compared to a revvy smaller engine.