The early cars (2015),of which mine is one, are coming up to six years old and although they are pretty bullet proof,like any car there is potential for something to go wrong and if it does the damage to your pocket will be commensurate with the £60k + new cost...these are not Ford Fiestas.
So there is no way that I would own one without getting the Lexus warranty.For 2 years at only £80 odd per month over the first year it’s cheap for what it is.
If you buy the warranty and at the same time are aware that you can afford the road tax,insurance,consumeables such as brakes, tyres at £800 a set,and of course fuel at 20mpg (or worse!) then you will not have much to fear and enjoy a great car.