An EREV is basically the worst of almost all worlds. It's a BEV with a motor tacked on. It ends up with a battery not a lot smaller than a pure BEV, so no real reduction in the cost of an expensive component, plus an engine and generator along with associated maintenance headaches. Not to mention the almost certain loss of cargo capacity.

I can't see myself ever wanting a Lightning EREV, for example, because of this exact issue. If I needed to tow, that would be the sole situation where it might hold enough of an advantage to matter. Aside from that, it will have (most likely) about 75% of the battery the BEV Lightning has, and it will lose the frunk, which is one of my favorite features. Plus, unlike my Lightning with it's 200K mile first required maintenance work, the EREV will probably have to be serviced every 10-20K miles. Ugh.

Everyone wants to rent that trailer at the same time. That is Christmas break, spring break, and summer vacations. Most of the year it is going to sit unused and so you're going to have to buy your own trailer if you want one not rented because they're just not the economics of it. You'll be paying for it either way because you're going to be the only user.

RVs are where I would think this would make the most sense. People with a travel trailer already have a heavy trailer and they want a lot of battery to get it anyway. beef up the axle a little you can put a thousand pounds of battery on you get more range when you're towing and if there's any left over your RV can run on battery power. It's also very common for them to plug in once they get where they're going and so they can charge on 220 volt power that's already at the RV park and be charged and charge your car while you're at it overnight.

I noticed that they are selling RV trailers that help haul themselves, and now electric trailers for semis.

https://electrek.co/2026/03/26/lightship-electric-rv-trailer...

https://electrek.co/2025/06/30/pebble-begins-deliveries-elec...

https://electrek.co/2026/05/08/really-quick-charge-with-rang...

Hybrids make a lot of sense, they just have a lot of the same costs as building EVs and most buyers in the US weren't willing to pay an extra $5k to increase gas mileage by 15%.

Toyota is currently seeing record sales of their hybrid models and has made multiple models hybrid-only as costs have fallen.

Plug-in hybrids with larger battery packs are a harder market fit. They cost more because of the larger battery (often more than full EV equivalents) and are not saving you any extra money unless you can plug it in daily. If you have that extra money to spend and a place to plug an, an EV will probably work fine for you and save you more money over time.

"only to realise that no one really wants them" - 1 of every 6 new cars sold in the US are hybrids

"You have to have a specific daily drive for them to make much sense" - You'd have to have an extremely specific commute for an ICE car to potentially beat a hybrid (flat highway driving with zero traffic). Even then it's doubtful as hybrid engines can be designed to optimize more for efficiency since the electric torque can augment to make performance acceptable. Try to find an ICE car that gets better EPA ratings than equivalent hybrids.

"You're carrying two engines and to fuel/power sources, so mileage is terrible on gas and battery." - The corolla hybrid LE weighs 100lbs less than the ICE LE, in part because hybrid transmissions are quite simple in comparison to a manual/automatic required in an ICE car. In either case, hybrids have a huge advantage in the types of driving where weight matters (stop-and-go/hills) because they can reclaim that energy rather than losing it as heat.

Most hybrids Toyota sells have a ~1 kWh battery which cannot be charged externally.

In a pure series hybrid a gas engine acts a generator which charges a battery, which drives an electric motor, which provides power to the wheels.

In parallel hybrids, both the gas motor and the electric motor provide traction, sometimes simultaneously.

Parallel is more efficient if you're depending on gas often, as every conversion has losses. Toyota mostly sells hybrids you can't plug in, and the ones you can plug in are variants of the ones you can't, so they all share the same drivetrain.

As far as I know, such plug-in hybrids directly drive the car forward via the internal combustion engine, which is more efficient than using a (possibly smaller and simpler) engine to charge a battery which then moves the car via electric motors, which is what I understand the person that you're replying to to be describing, though I am not familiar with the specific Chinese cars in question, since those are not options available to me due to living in the United States.

Related, though not for plug-in hybrids: https://www.youtube.com/watch?v=KnUFH5GX_fI

The volt was more like a Prius Plugin++. It still has a planetary gearset through which the engine would drive the wheels.