Extended car warranty is a bit of a lottery IMO. I personally wouldn't touch them as I've seen Ford, Toyota and Nissan all wrangle their ways out of paying out for repairs with extended warranty schemes.
One guy had to shell out best part of 2 grand after he tried to claim on an extended warranty scheme. In all my life, I've never seen a company apply so much red tape, and conniving, devious tactics and scheming as this warranty company did to dodge paying the customers bill. I felt sorry for him actually, as they even back charged him their paper work and time, and TBH, I actually felt the claim was valid. Very nasty people, very nasty indeed. Even threatened to take legal action against him for trying to make a false claim.
Ford are also VERY bad at paying out for body repairs, one customer actually took Ford to court over a car that corroded around the rear quarter panels. Quite rightfully so as well IMO. Told him it was normal, and he hadn't protected the paintwork correctly, and it had a stonechip that caused the corrosion.
Ford even managed to wrangle their way out of paying for driveshaft replacement for one customer, EVEN though the problem was in one of their own TB documents. Told the customer is was water ingress, and they wouldn’t pay as the oil had dried up. Hmm…
IMO, extended warranty is a waste of money, and I never buy them. Honda were good to me when I brought my car, but I had to tell them to shut up about extended warranty, other warranty schemes, insurance etc more then once. I have no idea how much commission they earn from these schemes, but the fact they do all they can to sell them, it must be profitable.