So today I parked my Honda Fit 2008 Japan model. I left the car parked in a road which was not level. With reference to the image below the water level reached up to the RED line. Image is not actual photo of my car. There was no ingress of water inside. Should I be concerned of water damage ? Should I change filters ?

Please Help

 

No need to change any filters; the only filter that might possibly have touched water at all is the oil filter, and it's sealed from the outside (or you would leave puddles of oil everywhere). I wouldn't be worried provided it's dried out thoroughly and (as you say) no water got inside. The underside of the car gets pretty thoroughly wet anytime you drive in a rainstorm.

 

Best practice is to drive the car long enough to thouroughly warm up everything.
The areas most at risk with water intrusion are wheel bearings and CV joint boots,
usually normal driving will get the lube hot enough to evaporate the moisture.

Regular issue with my jeep after running though deep mud or water crossing that
I need to change the fluid in the differentials, but the FWD transmission is not nearly
as vulnerable and your not going in 2 or 3 feet deep

Highest risk to water intrusion is when the whole drive train is warm and you submerge
the seals, the sudden cooling of the tranny differentials etc will create a vacuum in the
unit and suck in water. Diving in to flooded streets is a killer..