Regarding Depreciation on sale of car

You can charge depreciation. But once you declared it held for sale, you can't charge depreciation. Loss will reduce because any depreciation will reduce the life and value of asset. But there is a criteria to dispose an asset. Lower of cost or fvlcs. That means if you arranged to sell at 20,000 market price or fvlcs, the cost of the vehicle is 30,000, but you could only get 15000 for it, then what is the loss? 5000. After depreciation, if the car value is 15000 and this is called cost value, there is no loss. 

So you must understand, it all depends upon lower of cost and fvlcs and after depreciation what is the cost value of car and on what basis your selling the car (cost or fvlcs) and if depreciation makes any difference when the cost of the vehicle won't go down below fvlcs. 

Thanks for your feedback.

I have gone your your explanation but my concept is not yet clear.

Why we cannot charge depreciation ? Not understood

It is already sold on 16th December.  Then I can charge depreciation upto 15th December. Till 15th December,  I was using this assets as well

All assets mut be declared as long as the asset is in use. You can depreciate it till 15th. Plus what's the big deal about a days depreciation? Depreciation of an asset ceases at the earlier of the date that the asset is 
retired from active use and is held for disposal and the date that the asset is derecognised. 
Therefore, depreciation does not cease when the asset becomes idle or is retired from 
active use (but not held for disposal) unless the asset is fully depreciated. However, under 
usage methods of depreciation, the depreciation charge can be zero while there is no
production.