> Same as a hybrid but you can charge up the hybrid battery at home
And, in practice, the battery tends to be much, much bigger. Some PHEVs are basically mediocre-range electric cars which happen to have a petrol generator.
And, in practice, the battery tends to be much, much bigger. Some PHEVs are basically mediocre-range electric cars which happen to have a petrol generator.
In practice, most are mediocre range, low-speed only evs that effectively no one bothers to charge regularly because its impractical and annoying. The manufactures claim 80% reductions in emissions, and use those credits to allow them to sell more gas cars in the EU market. But real world emission reduction is 20%. They know this, they've known for years. Its a scam.
https://electrek.co/2026/02/19/biggest-study-yet-shows-plug-...
Some newer toyotas, newer BMWs and the coming EREVs will actually be able to be electric cars most of the time, and might live up closer to the claims. Doesnt change the fact the category has been mostly fraud until now.
2. i suspect but i have no way to prove... the PHEVs sold in america tended to be way better EVs - there's no similar total fleet emissions laws so no incentive to subsidize shitty/fraudulent PHEVs in the US.
The buyers wanted a petrol car. And they choose to fill with petrol. You need your own garage to make plugging in worthwhile (and avoid getting charging cable nicked). Consumers perhaps prefer to avoid the hassle of plugging in?
In New Zealand there's a visible disincentive of a yearly tax on pluggable hybrids (to pay for road use). In NZ roads are paid by taxes earmarked for that.
It would be better to say that all of the money from road use and petrol taxes are spent on the roads. Those taxes don't actually cover the cost of maintaining the road system.
At which point it kind of becomes moot that those taxes are ring-fenced for paying for roads. Since I've lived here people keep repeating that ring-fenced fact like its some kind of special thing. General taxation and council taxes are subsiding just the road maintenance, and completely paying for new build roads.
Yes they almost did.
Only a few years ago the National Land Transport Fund (NLTF) was almost entirely self-sustaining, funded by road users.
Recently Crown funding (grants and loans) expanded significantly to ~40% of fund income.
But approximately 30% of government transport spending is being spent on rail (to placate voters I think). Before the Land Transport (Rail) Legislation Act 2020, not much we spent by the NLTF on rail.
Currently ~3% of driven kilometres by car use electricity - so as that number increases, BEV and PHEV vehicles will need to have increased taxation. Presumably something like $700 per annum (currently about how much a person driving a petrol car pays on excise tax).
Ultimately it is almost tautological that road users pay for roads, since government spending comes from taxes, and most people use cars. How things get earmarked is just sophisticated accounting.
Something with a 60 mile electric range will likely satisfy all of their day-to-day driving. The generator means they don't have to charge though, so they can still take road trips without worrying about electric range.
In practice though, they're somewhat impractical. You still need an entire ICE drivetrain AND a moderately sized battery and electric motor, driving the price up.
Most people don't end up charging their battery because it still has an ICE so why bother? So now they have the worst of both worlds. Complex ICE machinery that needs regular service and heavy battery that doesn't end up being used.
You can also have a much smaller engine for a much bigger car, since you only need to cover average not peak power usage.
You also in most designs eliminate the gearbox.
I don't know about the whole world, but in both the US and Europe nearly half of the hybrids on the road are from Toyota, so unless nearly everything else is two parallel drive chains linked with clutches whatever Toyota does is the more common type.
Toyota uses a series-parallel system that works by having a planetary gear system that connects the ICE, a large electric motor, a small electric motor, and a drive shaft all together.
The planetary gear system functions as a power splitting device and a continuously variable transmission. It lets them direct power flow in a bunch of different ways. Here's a summary based on Wikipedia. (MB == the bigger battery, 12V == the regular 12V batter, ICE == the ICE engine, MG1 == the smaller electric motor, MG2 == the larger electric motor):
• Aux power: MB -> DC/DC converter -> 12V
• Charge: ICE -> MG1 -> MB
• EV drive: MB -> MG2 -> wheels
• Moderate acceleration: ICE -> wheels, ICE -> MG1 -> MG2 -> wheels
• Highway: ICE -> wheels, ICE -> MG1 -> MB
• Heavy power, such as on steep hills: ICE -> wheels, ICE -> MG1 -> MB, ICE -> MG1 -> MG2 -> wheels
• Max power: ICE -> wheels, ICE -> MG1 -> MG2 -> wheels, MB -> MG2 -> wheels
• Regenerative braking: wheels -> MG2 -> MB
• B-mode braking: Wheels -> MG2 -> MB, Wheels -> MG1 -> ICE
This is a big part of why Toyota hybrids are at the top of reliability rankings. Compared to a pure ICE they replace the clutch, the transmission, the starter motor, the alternator, the reverse gear set, and the flywheel with the planetary gear power splitting device. the two electric motors, and electronics. The power splitting device has very few movings parts--just the gears themselves, a pawl that can mechanically lock the gears when parked, and fluid pumps. The gears only move by rotating, unlike in a conventional transmission where they also change position. This makes their hybrids mechanically much simpler than a pure ICE.
Data collected across 600.000 vehicles in Europe show that most people don't and that emissions are just a smidge under typical ICE vehicles. If you factor in the high emissions produced during battery productions it looks to be an overall bad package.
The idea itself is certainly good but the real world simply doesn't show it.
https://www.evshift.com/368695/do-people-actually-charge-the...
For example, the sluggish 0-60 is due to the design being unable to get all the power from the engine to the wheels at slow speeds, due to the electrical path through the CVT gearbox being too small.
The funny noises when going down really big hills are due to the system having no way to dump excess energy after the battery is fully charged and being forced to rev the engine at 5000 rpm with no fuel to waste some.
The slow throttle response is due to the engine always running at 80% throttle for efficiency, which means if you suddenly need more power you can only quickly get an additional 20% before waiting for the rpm to slowly rise and give lots of power in a few seconds.
EV's do have similar design limitations (drive on a racetrack and you'll need to let the hardware cool between laps), but they seem easier to overcome by simply sizing the system slightly bigger to hide the limits.
This has been a perfect car for my use case, but the big caveat is my short commute. If your daily commute fits inside that short range (or one way commute if there's a charger at your workplace), this can be a great fit. A+++, highly recommended.
If your work commute is significantly longer than a PHEV's battery range, or if you don't have a convenient place to charge it, then it's a much less attractive proposition.
It just doesn't have much range: only about 25 miles on my 2018 model. Newer models advertise up to 44 miles on EV.
I had a PHEV Honda and I put 20 gallons of fuel in it over 6 years. The system works in the niche for which it was designed.
https://www.theguardian.com/environment/2026/feb/18/plug-in-...
https://electrek.co/2026/02/19/biggest-study-yet-shows-plug-...
https://www.theguardian.com/environment/2025/oct/16/plug-in-...
the link to the underlying most recent fraunhofer study referred to by the first two seems broken sadly, so i cant get the breakdown by manufacturer anymore. But the data on aggregate is clear - on average the PHEVs cars out there today spend very little time on average in pure EV mode. If they did there would be more than ~20% reduction in emissions.
"Even when the cars were driven in electric mode, the analysis found that levels of pollution were well above official estimates. The researchers said this was because electric motors were not strong enough to operate alone, with their engines burning fossil fuels for almost one-third of the distance travelled in electric mode."
The manufacturers dont list this admittedly complicated crossover, so you cant say whether one does or doesnt from a spec sheet. The aggregate data is clear though.
“In practice, the combustion engine frequently assists the electric motor in CD mode, especially during acceleration, at higher speeds or uphill driving. On average, the ICE supplies power during almost one third of the distance driven in CD mode. This is largely due to insufficient e-motor power, as most PHEVs are not designed to operate fully electrically under typical real-world conditions.”
“ The largest gap between WLTP and real-world PHEV emissions occurs in CD mode, often referred to as an “electric” mode where real-world CD emissions are even higher than the WLTP average. According to T&E analysis, real-world CO₂ emissions in CD mode average around 68 gCO₂/km, which is nearly nine times as high as the estimated 8 gCO₂/km in CD mode under the WL TP methodology, and almost twice the WL TP average overall emissions (including both electric and combustion modes). In practice, the combustion engine frequently assists the electric motor in CD mode, especially during acceleration, at higher speeds or uphill driving. On average, the ICE supplies power during almost one third of the distance driven in CD mode. This is largely due to insufficient e-motor power, as most PHEVs are not designed to operate fully electrically under typical real-world conditions. This relationship is illustrated by the correlation between e-motor-to-combustion-engine power ratio and emissions in CD mode: vehicles with an average power ratio between electric motor and combustion engine of 0.9, emit approximately 45 gCO2/km in CD mode. An average PHEV with a ratio of 0.7 has emissions of around 68 gCO2/km. Vehicles in the lower decile in terms of their ratio of electric motor to combustion engine power, where it drops to around 0.5, have average CD mode emissions of 105 gCO2/km. In real-world conditions, petrol PHEVs consume around 3 L/100km in electric mode. “
https://uploads.transportenvironment.org/production/files/20...
A colleague drives a BMW 3something hybrid and as far as i know has a 14kWh battery..
Thats good for about a 100km, but i very much wouldn't consider that a "fully" electric car by any means (edit: did you edit your post? couldve sworn you said "fully electric" instead of "mediocre range"?)...
Also, what most people don't realize: if you're only (or mostly) driving it electric, you're putting many more cycles onto that tiny battery.
...which usually costs as much as a "regular" EV battery, x times the size.
https://evclinic.eu/2024/09/05/bmw-hybrid-repeated-battery-f... for example...
https://carnewschina.com/2026/05/01/byd-deploys-new-heyuan-h...