485 horsepower Mercedes A45 AMG by POSAIDON

It still has the turbocharged 2.0-liter four-cylinder engine, but POSAIDON has extracted no less than 485 horsepower and an electronically-limited 410 pound-feet of torque. This was possible by upgrading the turbocharger and optimizing the air intake, while the cooling and gearbox also required some work to handle all the power.

 

As a result of the added punch, the A45 AMG Edition 1 is now capable of reaching a top speed of 193 miles per hour (310 kilometers per hour).