AFV (alternately fuelled vehicle): Any ‘electrified’ car that has a battery and electric motor as part of its powertrain to improve fuel efficiency or reduce CO2 emissions – whether it’s a hybrid, plug-in hybrid, all-electric car or a hydrogen-powered car

BEV (battery electric vehicle) or EV (electric vehicle): A different way to describe a pure all-electric model – such as the Audi e-tron SUV or Sportback, the Audi Q4 e-tron or the Audi GT e-tron.

Hybrid: Any model that combines a petrol or diesel engine with an electric powertrain, such as a mild hybrid (MHEV) or a plug-in hybrid (PHEV).

MHEV (mild-hybrid electric vehicle): Mild hybrids blend a petrol engine with an electric motor and a small lithium-ion battery. They can’t be plugged in for low-cost home or public recharging, which means they only offer limited electric range for short periods – such as pulling away from standstill, or in stop-start traffic. As a result, they only offer slight improvements in CO2 emissions or fuel economy compared to a plug-in hybrid (PHEV).

PHEV (plug-in hybrid vehicle): Plug-in hybrids blend a petrol engine with an electric motor and a lithium-ion battery to enable the car to travel on all-electric power for some distance. Take the Audi A3 Sportback 40 TFSI e. Its 13kWh battery and 53bhp motor offer up to 40 miles of all-electric range – more than enough for an average UK drivers’ typical daily driving, which according to Audi, can be less than 25 miles for 95% of journeys. When you need more oomph, the electric and petrol motors work together to offer 201bhp and 258lb-ft of torque. Doing lots of all-electric journeys, using low-cost home and public recharging to top-up your battery, means fuel consumption up to 256.8mpg and CO2 emissions as low as 26g/km on the WLTP combined cycle, slashing your fuel costs, and generating low benefit-in-kind (BIK) company car rates.

Find out more about Audi’s extensive range of plug-in hybrids

FCEV (fuel cell electric vehicle): An electric car that uses hydrogen to make its own electric power directly, rather than being recharged from the grid. Fuel cell electric vehicles combine hydrogen and oxygen to create electrical energy, with zero CO2 emissions and only a few drops of water as a by-product. They are quicker to refuel than electric cars, but a large-scale ‘hydrogen station’ is still in its early days.

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