Waleed bro, Regarding the AC of both models. I have both of them with me. There is not much of a difference between ACs of both cars if maintained properly. Idsi has a bit bigger cabin than the new ivtec but still, It cools same like a new city.
And bro, ur test drive depends how much the car was driven and how WAS it driven. For me, my city never put me behind ANY of the cars I ever pushed it with.
It even gives a hard time to a civic oriel prosmatec 2010 to catch it above 140kph. So, the acceleration is way above satisfactory for a 1.3L compact sedan class.
If there is a good shifter behind the wheel, the new city can give off a kick a$$ run to the 1.5L steermatic Exi or 1.6L vti.
I have touched 200kph on it and after that engine cuts off due to speed limiter.
As my bro ahmad said, it could be a faulty sensor as engine behaves the same way the sensor tells it to.
I hate all these sensor thingys as every mechanic has a "tukka" solution for their problems k "bhai petrol se saaf kar ke dekhta hoon"... :S
It will require a thorough honda maintenance for good performance all the way.