M115 ML55 5-speed  Automatic 2700 mm (106.3 in) 4656 mm (183.3 in) 1908 mm (75.1 in) 1261 mm (49.6 in) 1768 kg (3898 lb)   The  Mercedes-Benz SLR McLaren  is an  Anglo - German   supercar  jointly developed by  Mercedes-Benz  and  McLaren Automotive , built in  Portsmouth  and the  McLaren Technology Centre  in  Woking ,  Surrey ,  England .  Daimler AG