New Honda Amaze 2018 Pickup/Acceleration/Reverse Issue

I was a proud owner of a Honda City IDTECH car which I bought almost 1.5-2 years ago. Seeing the performance of the car and brand image of Honda, I decided to buy new Honda Amaze 2018 for my wife against Maruti Dzire that we first had thought of buying. We had pre-booked new Amaze, and got the delivery of car on 23rd May, and since then it has been very painful and frustrating experience.

I immediately noticed following major issues while driving the new Amaze for 1-2 days:-

1. The car has pick up/acceleration issue and loses all power when road is steep, especially when you try to accelerate on a steep road after braking. It loses its power to an extent that sometimes it stops.
2. The car vibrates a lot while reversing.
3. Poor average – the car is giving an average of 13-13.5 on highways.
4. There is noise coming probably from shockers when car goes into a little deep jerking, and/or on speed breakers. 

The new Amaze was bought from following dealer – Delight Honda, Mohan Cooperative Industrial Estate, Mathura Road, New Delhi.

I have taken the vehicle back to the dealer two times now. First they were hesitant about issues, but after checks and inspection they also now acknowledge the problem, and have advised me that they are talking to Honda Technical R&D department for the resolution and the car might needs some change of parts. They also informed that they have come to know that same issues are reported (esp pickup and reverse) in other dealers as well by few other customers, and Honda Technical Department might take 7-10 days to come back and respond on the issue.

This all experience has now gone very frustrating knowing that new Amaze 2018 has got manufacturing defects, and the issues have now started surfacing on social media from different parts of country. I saw few posts and YouTube videos of other customers on internet.

Each moment of driving the new Amaze is now filled with disappointment and frustration, and I have started regretting my decision to buy Amaze over Dzire.

Please could you share and let us know if you are also facing the same problem? And what you did to actually get the issues sorted? What would be the process of refund of this faulty car should I wish to go for refunds and buy Dzire then?