I don't know if it's true, but I heard the price for an extended warranty goes up the later in time you wait to buy it. In some cases it might also be true that after 18 months, and/or some number of miles on the car from original in-service date, it is ineligible for an extended warranty altogether from that automaker (3rd party warranties notwithstanding). Also, when said to be "concurrent", how can it be consider an extended warranty if it does not "extend" past the expiration date of the oriignal factory's bumper to bumper warranty?
For the first three years, essentially everything on the car is covered under Toyota's basic new car warranty, unless you exceed the specified mileage. I believe the "drivetrain" is still covered for 5 years or 60k miles whichever comes first, (altough the traction motor battery is actually covered for 8 years or 100,000 miles), but the rest of the car is only covered for 3 years or 36k miles whichever comes first.
As such, would there ever be a case of an extended warranty that extends the basic new car warranty for less than 48 months or some additional mileage greater than 36k miles? Typically, I think the minimum extended warranties (and also the cheapest) start at 4 years or 50k miles, while the drivetrain components and traction motor battery, still remain covered under the original warranty up to 5 years / 60k miles and 8 years / 100k miles respectively. For this particular car, it is understood that the traction motor battery will never be covered beyond the original Toyota warranty period, and even if it was, the extended coverage will exclude "normal" degradation in that coverage. However, the repair cost for a complete battery failure would easily exceed the cost of that would-be warranty many time over, but sadly there is no existing coverage for that unusual if unlikely event either - even under any available extended warranty - beyond the first 8 years/100k miles.
However, I suspect, 3rd party warranties underwritten by some "high risk" insurance companies, are going to jump into this market and offer some kind of long term battery warranties (for a large fee of course) because none of the big automakers, as of yet, unfortunately, are interested in this potential business opportunity. And who knows, in 8 or 10 years time, a complete R&R on a traction motor battery may be half (or less) what it would cost today, and statistically only necessary on <1 or 2% of all the EVs still on the road in the next decade. :mrgreen: