Motor Generator Unit - Heat
MGU-H
It is a device that uses the thermal energy from engine exhaust gases to spin a turbocharger, generating electricity and eliminating turbo lag. It will be abolished under the 2026 power unit regulation overhaul.
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Frequently asked questions
How was the MGU-H related to the turbocharger?
The MGU-H was connected to the turbocharger shaft. It could recover energy from the exhaust-driven turbo as electrical energy or use electrical power to drive the turbo and reduce turbo lag.
Is the MGU-H still used in F1 in 2026?
No. The MGU-H was removed under the 2026 power-unit regulations, with the hybrid system shifting toward a much more powerful MGU-K.
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