Colin McRae's family said they are thankful for the outpouring of condolences across the world following the death of the world champion and his son, but asked they be allowed to mourn privately.
In a message issued by the family, McRae's father Jim says: "It is with much sadness and regret that we have to make this statement.
"It is unbelievable that Colin and Johnny's lives have been taken so prematurely and in such a tragic manner.
"Colin was a great son, a loving husband to Alison and a fantastic father to Johnny and his big sister Hollie.
"Johnny was a great wee guy, spending every spare minute with his dad, and even at this early stage it looked like he had the potential to carry on the family dynasty.
"Our thoughts are also very much with the families of Ben Porcelli and Graeme Duncan. Ben was a great buddy of Johnny's and they had always spent a lot of time together both in and out of school.
"Graeme, who now resides in France, had been a close friend of Colin's since their schooldays and was back in Lanark on holiday.
"We are thankful for the overwhelming number of messages of support we have received from all around the world. Colin was very much an inspiration and role model to motorsport fans the world over.
"As you can imagine this is a very difficult time for the family and we would ask that our privacy be respected and we be allowed to grieve in private."