Will not cover coolant pipe. Also will only cover up to the low blue book at time of repair. I have had the same carcheck policy that you got and canceled it after 3 months, they were very fair and returned 80% of what I had paid into them.
Also, carcheck is just a retail outlet that sells for the underwriter, nothing is paid by them at time of repair.
I just could not see spending 50% of what blue book is on these cars at the time of purchase. I have had to shell out money on repairs on my car but everything I have replaced would have not been covered anyway.
My 2 cents
97 740i e38 - SOLD
02 745i e65
03 Montero Limited