I want to buy wagonR CNG due to its fuel efficiency. I am riding the swift (2018)vdi regularly, so control and comfort as compared to swift is not comparable but yes it is very spacious car and heighted car. As far as performance is concerned I can reach to 100 km/h very easily. Only drawback is while overtaking. Ac is working pretty fine although its CNG.
Pros :
1)Mileage
2)Space
Cons:
1)Car steering handling
2)Lack of power while overtaking