I think Toyota & Honda have different PCD (distance between studs).
If they fit, your car will be raised by 1/2 inch.
Putting Vitz wheels+tyres on City will have error; Speedometer = 100km/h >> Actual = 101km/h
Putting City wheels+tyres on Vitz will have error; Speedometer = 100km/h >> Actual = 99km/h
Larger wheels smooth out the ride, however there will be negligible affect on mileage.