Water puddle inside van on passenger side in front of seat

classiic HVAC failure? LHD left hand drive car , no country told.
own for how long, 2years or 1day/ or what ( right passenger door?) for rain. ingress.
you said water, well that can be clean pure water
from RAIN or HVAC evap condensate,
using AC cool or heat + defrost mode? or just pure heat mode?
I do not know what you do there
i tray to capture water,in jar,and see if it is green or yellow or pink
that is AF antifreeze,
and put my fingers in it and rub fingers to thumb and it feels very very slippery, that is AF. not water
if i sniff it and smells sweet it is AF>
(3 ways to discover AF antifreeze)
ok it's water, so dont use AC or Defrost mode.
so that be RAIN or defrost condensart
sorry i could never even guess the water gravity effects from any car made from fire wall to rear of care, gee hills even change that.
learn to do deeper inspection of all carpets there.

bad door gasket
or last drove car with say a bandanna hanging out the door.
a 1 time event,nobody can guess ever.
and allowed rain to go inside any car.
or windows were not fully up.

I have got a Suzuki Alto.
I been having problems lately. When ever it rains the car get flooded inside.
I keep getting a puddle of water by the back and front and under the seat of the passenger side of the feet.
It happen when the car is standing stationary at night and in the evening when it rains and by the morning there is a puddle of water inside. As attached in the picture.
The garage did a get wash but they could not find no leak and fixed the rim of the doors on the passenger side of the door too but it still keep happened and I went back the garage but they have done all the investigation but they still can't seem to find the problem for the water flooding inside of the car.
Can you please help in understanding what else could be the course of this problem.
I look forward to hearing from you.

I have got a Suzuki Alto.
I been having problems lately. When ever it rains the car get flooded inside.
I keep getting a puddle of water by the back and front and under the seat of the passenger side of the feet.
It happen when the car is standing stationary at night and in the evening when it rains and by the morning there is a puddle of water inside. As attached in the picture.
The garage did a get wash but they could not find no leak and fixed the rim of the doors on the passenger side of the door too but it still keep happened and I went back the garage but they have done all the investigation but they still can't seem to find the problem for the water flooding inside of the car.
Can you please help in understanding what else could be the course of this problem.
I look forward to hearing from you.

its your door rubbers

water in the passenger seat is caused by a leaking seal in the a/c evaporator. all the cool air in the a/c are stored in the evaporator. thus moisture is present in the evaporator. have an a/c technician check the fittings in your a/c.

probably your heater core

A/C drain pipe blocked with old leaves and dead flies the outlet is on the passenger side of vehicle lift bonnet and look a lower of firewall for a rubber pipe with a **** in the end and squeeze it and shake it

I had the same problem we found that the rubber gasket by the fresh air filter below the front windshield had come loose replaced the rubber gasket no more trouble we had trouble with the front seat floor being wet also passenger side only

are you losing water in the rad ??if not and you think A/C outlet pipe is clean and water run away from inside firewall well .Then put hose on it and look inside car to trace fault

The most common source of this kind of leak is the windshield, have a glass shop check the sealing around the glass