[bmicraft]

The main problem with PHEV is, that's it's comparably small battery will age very poorly because it will both: a) do more charge/discharge cycles per distance driven, and b) get charged and discharged closer to 0 & 100% making the battery age even faster.

[plugger]

I'm not sure where you're getting this idea from, but my PHEV (BYD Shark 6) doesn't drop below 22% battery as the engine is there to charge the battery, not propel the vehicle.

I also believe that most pure BEV drivers would charge their cars daily to mitigate the risk of range anxiety.

[plqbfbv]

> I'm not sure where you're getting this idea from, but my PHEV (BYD Shark 6) doesn't drop below 22% battery as the engine is there to charge the battery, not propel the vehicle.

> I also believe that most pure BEV drivers would charge their cars daily to mitigate the risk of range anxiety.

(not parent poster) I got the perspective from people that wanted to help other people, but stopped repairing PHEVs:

- https://evclinic.eu/2025/09/27/if-you-drive-a-hybrid-may-god...

- https://evclinic.eu/2025/01/19/ultimate-ev-ice-and-hybrid-co...

- https://evclinic.eu/2025/12/04/2021-phev-bmw-ibmucp-21f37e-p...

The difference with BEV charging is that the battery is much bigger and it's a core component (it's properly serviceable), so I can charge it at 60%, keep degradation at bare minimum, and still have 270km of range. With a PHEV you'll need to always charge it 100% to fully use that EV range, so the battery will degrade way faster due to way more cycling.

[plugger]

Cool. Thanks for demonstrating you have no idea of my usage. I charge every second day as I don't drive far or often. Sometimes I go 3 or more days as I'm actually trying to burn petrol to seat the seals on the pistons of my engine/generator.

Plus my 30kWh battery is Lithium Iron Phosphate. Your BEV is likely a Lithium-Ion? Regardless, I should get 3,000-5,000 full charge cycles on my battery. As long as I charge it to 100% once a week I should be golden.

I have a BYD dealership 25km from my house and a 6 year/150k KM warranty. I'm pretty sure people work there, they definitely were when I visited. Given that I'm pretty sure there are people repairing PHEVs.

[plqbfbv]

I'm happy that your usecase is a conscious one, that doesn't completely remove the issues of two powertrains to maintain and a smaller battery. BYD is better than average in this regard, and 30kW battery seems big enough that I agree with you, deep/frequent cycling is less of an issue.

Unfortunately that is not the experience for the average driver of a PHEV. Most people buy by brand, not by specs, so the average result is what you see in the links of EVClinic - 80`000km cars with fried batteries that cost more to replace than the resale value of the car itself (and again, as also noted by EVClinic IIRC, BYD is better than average in regard to repairs and parts cost).