Car warranties often stipulate an excess that you will need to pay each time you claim. The amount you’ll need to cough up will vary significantly from provider to provider and will ultimately affect whether a policy is worth having.
For example, if you have to pay the first £250 of any claim, then you are unlikely to see any real financial benefit should something go wrong, even if it is a cheap policy in the first place.
Instead, you need to look for a policy that offers suitable cover at an affordable price with the lowest excess; £50 or less is commonplace to make the cost of making a claim worthwhile.