Basically what the title says....what are the differences between the 1.4 16v 100bhp engine in the mk4 polo and the 1.4 16v 75bhp engine in the mk5 polo?

Any help would be much appreciated

25bhp?

lmao no but seriously...why does the earlier version of this engine have 25bhp more? different head or internals?

If anybody knows I'd really like to hear from you cause I don't want to be stuck with only 75hp.

Use the search... Been asked many times...

My search ain't coming up with anything really. If you could point me in the right direction I'd be very greatful :)