I Recently brought (3months ago) a new IS250 and brought the extended warranty. All up the warranty will last 7 years/150,000 which ever comes first and if you plan to keep the car for at least 10 years, that is 7 years trouble free motoring IMO. I think you need to do the maths first though (i did) and if you plan to drive approx 20,000km a year then the warranty will last the longest. if you plan to sell the car before the magic 120,000 and driving high KM's per year then i don' think it will be worth having the extended warranty.