Consequences of a Non-running engine

[Gamge]

I usually do not happen to drive my car daily, but only around 20 km on weekends. On weekdays, it doesn't run. I want to know this situation will make any harm to my car - engine, battery or any other part? If yes, please let me know followings:

1. what could be consequences - which parts would be damaged or cause any issue ?
2. How much I happen to afford to recover/repair them ? 
3. Any actions I can do to avoid these issue? 

My car vitz 2017 model 990cc- (non hybrid) 

(I am new to these and have very less mechanical knowledge, therefore appreciate your thoughts )

Edited December 5, 2018 by Gamge

[Crosswind]

Just relax.

Some hybrids and performance cars cause issues if they are not used enough. There won't be any problems for a non-hybrid Vitz. Just make sure there are no rats of any other animals where you park it.

[Hyaenidae]

Your car will be fine, don't worry

Just a few "precautionary measures":

Make sure you do a lube service (change  engine oil) every 6 months and change the engine oil filter every 12 months. (Do the routine maintenance service on a time basis instead of mileage basis)

Open the bonnet and check all fluid levels before your weekend run.

Start the engine and let the car warm up a bit before you take the car out.