Why is the BMW i8 engine so quiet?

I recently test drove a BMW i8 and I couldn't believe how quiet the engine was. How does BMW achieve such a quiet engine in a high performance car?

That's because the BMW i8 uses an electric motor in combination with a 1.5 liter turbocharged engine. The electric motor is powered by a high-voltage lithium-ion battery, which eliminates the need for a traditional loud gasoline engine. It also has a special soundproofing material incorporated in the engine compartment to further reduce noise.

The i8 also features a jet engine-inspired cooling fan design, which helps to reduce engine noise while also providing efficient cooling. Additionally, BMW has implemented sound insulation in various parts of the car's structure to further reduce noise.

As for personal advice, if you're looking for a quieter ride, consider looking into hybrid or electric cars like the i8. You'll also be reducing your carbon footprint and saving money on gas in the long run.