The 71-plate Sportback 25 TFSI 5-speed model has been gifted to the charity by an anonymous donor.
There are only 1750 tickets, priced £25, up for grabs which are available to buy now until the end of August at www.jumblebee.co.uk/CHASprizedraw.
The lucky winner will be able to choose the car’s colour and whether it's manual or automatic.
Laura Campbell at CHAS said: “It truly is an amazing donation and we are so grateful to the generous donor.”
Recent research commissioned by CHAS shows there are over 16,700 babies, children and young people in Scotland living with a life-shortening condition.
It is CHAS’s mission to reach every family who needs its support.