Plug-in Hybrid

The larger battery in Plug-in Hybrids can be plugged-in to charge. Once the battery is depleted, the vehicle behaves like a conventional hybrid with the engine running when required.

Home
Plug-in Hybrid

Cars need to meet minimum emission standards when travelling in the Ultra Low Emission Zone (ULEZ) or the daily charge must be paid.

Minimum emission standards

Petrol: Euro 4
Diesel: Euro 6

The ULEZ will be enforced based on the declared emissions of the vehicle rather than the age. However:

Petrol cars that meet the ULEZ standards are generally those registered with the DVLA after 2005, although cars that meet the standards have been available since 2001
Diesel cars that meet the standards are generally those registered with the DVLA after September 2015

Information from Transport For London

Check this car on the TFL website before purchasing: https://tfl.gov.uk/modes/driving/check-your-vehicle/