Mercedes-AMG CLA 45 EV has become the fastest car in its class. Car has a tri-motor powertrain producing 671 hp and 1,297 lb-ft. The fully electric Mercedes-AMG CLA 45 was met with mixed reactions last month, so the company has decided to demonstrate its capability. That means the CLA 45 is now the “fastest vehicle in its segment.” When the battery is low, a 330 kW DC fast charger can take the CLA 45 from 10-80% in as little as 22 minutes.