HEV — self-charging hybrid
A hybrid electric vehicle combines a combustion engine with an electric motor and a small battery that the car charges itself, from braking and from the engine, with no socket to plug into.
A full hybrid can move off and crawl in traffic on the electric motor alone, then bring the engine in when more power or speed is needed. The battery is small, so electric-only driving is limited to short, gentle stretches. The car decides on its own when to use which source, and the driver does nothing except refuel. Type-approval rules draw the same line: hybrids that can be charged from an external source form one category, and hybrids that cannot form the other. A self-charging hybrid belongs to the second.
HEV, MHEV, PHEV, EREV and BEV: what plugs in and what drives the wheels
| Type | Plugs into the grid | What drives the wheels |
|---|---|---|
| MHEV (mild hybrid) | No | Engine. A small electric unit only assists and cannot drive the car by itself |
| HEV (full hybrid) | No | Engine, electric motor, or both |
| PHEV (plug-in hybrid) | Yes | Engine, electric motor, or both, with a battery large enough for real electric driving |
| EREV (range extender) | Yes | Electric motor only; the engine is a generator |
| BEV (battery electric) | Yes | Electric motor only, no engine |
The two lines that matter to a buyer are the plug and the wheels. A mild hybrid is a combustion car with a small electrical helper. A full hybrid is the first step where the electric motor genuinely moves the car. Everything from the plug-in hybrid onward needs a charging habit to make sense.
Charging and running costs: what changes in daily use
With a full hybrid there is nothing to plan: no cable, no wall box, no dependence on charging points. You fill the tank as with any petrol car, and the saving comes from the engine switching off in slow traffic and recovering energy when braking. The gain is largest in town and smallest on a long motorway run, where the engine does most of the work.
A plug-in hybrid asks for more and gives more. If it is charged regularly, the daily commute can run on electricity, which is where it saves money. If it is never plugged in, it carries a bigger, heavier battery and behaves as an expensive full hybrid. A range extender is driven like an electric car throughout and suits those who can charge but cannot always rely on it. Exact consumption, electric range and prices are market-specific and sit in each model’s record, not in this entry.
Chinese hybrids in this registry
Several Chinese brands sell full hybrids in Europe alongside their electric and plug-in versions. The registry holds the Jaecoo 5 SHS-H, the Omoda 5 SHS-H, the MG3 Hybrid+, the MG ZS Hybrid+ and the MG HS Hybrid+. The same brands also offer plug-in versions, such as the Jaecoo 7 SHS-P and the MG HS PHEV, so a choice between two powertrains of one model is a real decision. BYD’s DM-i system sits on the plug-in side, closer to a range extender in how it drives. For the Jaecoo range see the brand page.
Which one fits which use
- No place to charge, mostly short trips or town driving: a full hybrid. It asks nothing of you and still saves fuel against a plain petrol car.
- A socket at home or work and a mainly short daily commute: a plug-in hybrid or a range extender, provided you will actually charge it.
- Frequent long journeys and no reliable charging: a full hybrid or a plug-in hybrid with an efficient engine; a range extender gains less on a long motorway run.
- Charging is easy and trips are predictable: a battery electric car removes the engine altogether.
Tax and access rules differ by country and by powertrain, and a plug-in hybrid may be treated more favourably than a full hybrid in one market and not in another. Check the market page for the model before deciding.
Updated Nov 14, 2026