You might also check the 12v battery, if it's limping along on the original or a dead one it would have to be constantly recharged by the HV battery & inverter running more often. Our 2013 had the original battery still in it when we bought it a couple months ago, clinging on at 11.9v. Mileage seems to have improved slightly with a fresh one.
I have a 2016 Gen 4 that my partner commutes about 100 miles round trip in. Aside from its strange looks it's a great car. Zero repairs so far at more than 220K miles. No rattles or clunks. Every single electric button and switch still works.
2014 Mazda 3 with 322,000 kms, it's doing fine. I'm still on original engine, transmission and starter. I use it almost daily in traffic. The only problem is that the battery is slightly more costly than a standard one, which offsets the miniscule fuel savings you're getting from the system
Not a Lexus but 2023 Camry and had my battery die twice and both times had Toyota test it and charge it.
It was from lack of use, and short drives. The battery was also on the low amp of cca ratings. I replaced it with a much stronger CCA rating battery and haven't had any issues,
My 2012 recently needed a battery replacement
So on top of cold weather, your battery may need attention
My factory battery died at 30k miles on a 2024 corolla…
My brother and I both have/had 6 speed 2015 Mazda3 (me the hatchback, him the sedan), and both of us had terrible issues with the Mazda brand batteries.
These are excellent cars but for some reason the batteries they use are bad. I had a 21 Mazda 3. The battery failed in 2023. They replaced it under warranty. The new battery lasted literally less than 6 months.
Mazda OEM batteries are trash. Always have been. 35 years with Mazda and we stocked a ton of them.
The only time I had issues with my battery was the original one when it was on its death bed. But I remember needing to clean the posts a few times and it would start right up. Never was left with a check engine light but when it acted up it would do weird things here and there.
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If choosing battery across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare battery across these categories:
In March 2026 on PartReview, battery OEM Toyota were overall better than OEM Mazda.
Battery OEM Toyota and OEM Mazda were equally popular according to data in March 2026.
By vote balance, battery OEM Toyota surpassed OEM Mazda:
By number of reviews, battery OEM Mazda surpassed OEM Toyota:
In March 2026, according to PartReview, battery OEM Toyota led more car-specific ratings than OEM Mazda:
OEM Toyota are chosen by owners of cars such as: Toyota Prius, and others.
Battery OEM Mazda have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of battery OEM Toyota with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
Also available: comparisons of battery OEM Mazda with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
You can also see who is better among other battery manufacturers: OPTIMA or Varta, OPTIMA or Bosch, OPTIMA or OEM Subaru, OPTIMA or OEM Volkswagen, OPTIMA or YUASA.
