I have a santro from last 5 Years. Before this I have a wagon R. There is so much diffrance in the both cars. Ac is more effective of Santro, But The steering wheel blocks the ac cooling from left side. The driver cannot see the indicator light in the meter pannel due to steering wheel. The Differences between the ABC(Axilator Brake & Clutch) is very short. Sometimes it couses confusion to the driver. But in Wagon R there is no any confusions. There are so much compare points for the both Cars.
But overall I like Santro more.