Thinking of doing Uber / Grab on a part-time basis. However need a newer car, so which one should I choose?

I've narrowed down my search to the following 3 cars:

1. Proton Saga.  The reason, cheapest and largest booth space among the 3, large boot space and airport trips should not be a problem.  Concerns, maintenance cost and reliability concerns over the CVT gearbox. Brakes are not very good.

2. Axia. Cheap operating cost and maintenance. Concerns,  Small boot space, might be a concern for airport trips.

3. Myvi. Cheap operating cost and maintenance. Concerns,  Small boot space, might be a concern for airport trips, cost the most among the three.

Thanks for your input.