The BMW M8 Competition is already one of the most potent BMW models available. The stock M8 has 625 hp and 750 Nm of torque. When Manhart gets its hands on the M8, the car becomes the Manhart MH8 800 packing 823 hp and 1050 Nm of torque.

The MH8 800 can reach 100 km/h in 2.6 seconds compared to the 3.2 seconds the stock M8 needs for the same deed. The car can accelerate from 100 to 200 km/h and 5.7 seconds.
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https://www.slashgear.com/manhart-mh8-800-bmw-m8-competition-has-over-820-hp-18620949/