I was looking for a sedan with decent space
https://auto.ndtv.com/research/cost-to-own
Of all the sedans of its class, he TCO total cost of ownership over a 5 year period, the Ciaz is the cheapest to own.
The driver seat is quite sad since it is placed so high that for a 5ft 10" frame, you will find legroom inadequate if yiu tend to sit close to the steering. The position of the door hand rest, central hand rest and the steering wheel are not comfortable. With your hand resting on either of the hand rests, you may not be able to reach the steering comfortably. Mine is the petrol variant and is extremely underpowered. As you accelerate, the engine noise intrudes into the cabin. The body roll is also quite bad. Make sure you test drive on bad roads and have someone wih you that can provide adequate feedback. Also ask a friend to drive and see for yourself. Move the electric windows up and down and see how the whole frame moves. Open the engine compartment and you can see the road. Suzuki has drastically brought down weight by such methods. Speakers are not too good either. The switched and music system and even the switches on the steering are the same as present on the Celerio. So you don't get a premium feeling on this car.
The Nexa experience is quite a farce. The sales persons don't have much information about the vehicles. They have not been trained adequately. I was not assisted in transferring my NCB from my earlier vehicle to the new one and lost money due to this. I now will have to try and do the same on my own.
Buy the car if maintenance charges is your prime concern.