At this moment the TOPS would be Rs 2950 for a Month for every 100,000 Burrowed. I am sure its not more than that.
Rs 2950 includes Capital Payment + Interest + VAT ( which 50 % is recoverable if your are a Company )
Interest Rates came down a bit ( very few basis points ) with the USD 550 million loan and the Government settling some Debts with the Government Banks reducing credit pressure.
Very Important Note if you are Purchasing From a Lease is that, Buy a Car Which has very Good Resale Value and may have Tendency to increase its value over the years. This is because at the end of the Lease Period you will have very Little Loss or Might Have Gained on the Interest Amount Paid as well. (This is only Valid for the Sri Lankan Car Market as the Cars appreciate Every Year )
Hope this Helps