As manufacturers seek ways to create more efficient cars without compromising power or driveability, eyes are increasingly turning to new technologies and ideas.

BMW is looking to electricity generated by exhaust gas heat and solar power to take the electrical load off the engine and thereby improve efficiency and reduce emissions.

In fact, BMW has found that re-purposing the otherwise wasted exhaust heat to power a thermoelectric generator generating up to 1kW could be used to reduce real-world fuel consumption by as much as 5%.

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