I brought a Celerio car and Driven 16000 Km in just 5 months, and my personal experience is awesome with this car in driving on Highway going to 120 smoothly and also in the city. it gives good mileage. Overall good performance and fuel efficiency. Though I have CNG fitted I have taken luggage with it. Definitely, it's worth buying it. On Highway, I have taken this car and Chased almost all the other cars even. It's all depends on how we drive.