This thread is definitely interesting since I too own a swift with the 1.3/5spd engine.
I see you are Getting closer to 50mpg? I myself are averaging 40 now in winter temperatures (below freezing) with winter tyres (lots of friction) and bad cold starts.
Hoping to increase this as summer comes around, but im looking into putting a grill block on the car since I recently hit a deer shredding my grille into a million pieces. Except that I only got minor cracks in the fiberglass front.
I'll subscribe to this thread, eager to see what you come up with
