Something I wish I had known before I purchased the vehicle

The text in the PDI specifically defines the warranty as 8Y/100K. Then it states that the warranty applies if the capacity falls below 36.6 ah during this warranty period. I hope you are right that the same threshold applies in TZEV states, but I do not feel that the text in the PDI is specific enough to be conclusive.

 

Even the warranty booklet contains no language that would alter the threshold for TZEV states. That's sort of the whole point of the additional warranty...you get the same as everyone else but for a longer time.

 

It is hard to find explicit evidence either way, but here is an example (it is from a Volvo warranty book) that deviates from what you and I may consider to be common sense...




Here is the document this came from: https://personalizeyourvolvo.com/PDF_Brochures/2020%20Volvo%20Warranty%20Manual.pdf

In case it is not legible enough, the fine print says that the standard HV battery warranty is 8Y/100K with at least 55% capacity.
For the TZEV states, it becomes 10Y/150K with at least 50% capacity.

This is a perfect example of how a manufacture can alter the required extended warranty in their favor by allowing additional capacity loss. In this case, at least it is clearly stated. In most others (including the Clarity) it is not stated. In fact, Honda never states a capacity threshold at all in their warranty books. The only place we have ever seen this in writing is almost as a footnote in the 17-093 PDI document. I remain skeptical.

 

That clause, as written, implies additional coverage. It does not state that the 55% coverage for 8 years is negated.

 

Huh?
It specifically states a 55% limit at 8 years, and 50% limit at 10 years. I'm not sure how else you can interpret it.
I agree, 55% for 8 years is not 'negated', but the extended TZEV (from 8 to 10 years) has a 50% threshold.

 

Honda doesn't have any of that weasel language in their warranty.

 

OK, I give up. You guys are probably right, and Honda is not a weasel.

All I was trying to convey is that a warranty document stating 8Y/100K, 10Y/150K (or whatever) is completely meaningless if it doesn't convey how much degradation is allowed (because everyone acknowledges that degraded performance is 'normal' for this battery technology).

Many (most?) other manufacturers define a failure threshold right in their warranty documents. Honda does NOT.

17-093 (Pre-delivery Inspection) is the only reference anyone has been able to identify that quantifies a failure.
I guess this is just semantics, and we can accept that 17-093 is an official 'addendum' to the warranty.

 

The lowest fully charged range in 30 F weather for my 2018 Clarity was 36.3. The highest fully charged range in 80 F weather was 52.0. Granted, this is only in the last 9 months of ownership, but I am overall pleased, as most of my driving is in the EV mode. Overall MPG for 7,200 miles so far has been 216 (approximately 1,300 ICE), and getting better as I'm learning how to maximize EV mode.