No. They all suck, really. I've had two - neither of them have paid out for anything. Also, if they do, you are severely limited to the amounts they pay out, so you fork out a bunch yourself anyway. I would rather buy a new car than get one with a bolt-on mechanical warranty, to be honest.
@juankleynhansdont know if my father only got lucky but he bought an extended warranty from SA warranties for his ford ranger and less than a month after he bought the warranty, the turbo went poof, they paid for everything, no questions asked.
Thanks for everyone's opinions. My previous warranty was with Constantia IAfrica, They where very good and paid out twice once for a Petrol Pump and Other was a throttle body. The car in question is a Peugeot 207 GTI.