Welcome! Glad to hear that you are enjoying your Sonic, and I too am curious to see if anything else is different. Would you mind posting some exterior and interior pictures for us?
It's a 5speed (It looks to be an 'Ecotec' motor from a 1.6 Opel Astra)
10.8:1 Compression ratio
Bore: 79mm
Stroke 81.5mm
DOHC with intake and exhaust VVT
85kw/155nm (115hp 114ft/lbs for you westerners )
So not too bad for a 1.6 engine.
But coming from a 1.8T Modified VW Polo GTI the Sonic is quite slower indeed.