How does the Audi e-Tron engine differ from traditional engines?

I'm considering purchasing the Audi e-Tron, but I'm not familiar with how the engine technology differs from traditional engines. Can someone explain it to me?

The Audi e-Tron utilizes an electric motor rather than a traditional gas or diesel engine. This means it runs on electricity and emits zero emissions, making it a more environmentally friendly option.

Unlike traditional engines, the Audi e-Tron does not require any oil changes or other maintenance typically associated with gas or diesel engines. This can save owners both time and money in the long run.

Additionally, the e-Tron engine has regenerative braking, meaning it uses the energy from braking to recharge the battery and extend the vehicle's range. It's a more efficient use of energy compared to traditional engines.