Starting new in 2005 HARTGE sales program is the HARTGE 645Ci 5.1 with a modified V8-engine who's draw of a 5.1 liter displacement full up 420 PS and with a max. torque up to 520 Nm which rende enough forward drive. The Hartge 6 series will  complete the sprint from 0-100km/h in 4,9 sec und reach a high-speed of unlimited 290 km/h. Belong to the additional technical equipment is the HARTGE Sport-exhaust in stainless steel, the Sport- brake system and the HARTGE Sport- suspension adjustable and 30 mm lower.

The HARTGE 6 series shine in optics with a new retro modern front design and as well the new-designed HARTGE ¡Ë¢çE¢®Ec¢®E¡Ëc¢®¡×¡Ë¢çCLASSIC II¡Ë¢çE¢®Ec¢®E¡Ëc¢®¡×¡Ë¢ç alloy wheels in 21 inch. Inside the car aluminum and leather dispose of the optics, which include aluminum-handbrake cover, the aluminum/leather-automatic stick, the aluminum- pedals as well as the Sport- leather steering wheel all together in the individual HARTGE ? Design.