World Car Fans reader Ben G has managed to catch the 2012 BMW 3-Series and Mercedes SL in London.
As we have previously reported, the next-generation SL will adopt styling that mimics the SLK and SLS AMG. Engine options are slated to include a 306 PS (225 kW / 302 hp) 3.5-liter V6 as well as a twin-turbo 4.6-liter V8 with 408 PS (300 kW / 402 hp) and 600 Nm (442 lb-ft) of torque. Furthermore, the SL63 AMG could be powered by a twin-turbo 5.5-liter V8 with 544 PS (400 kW / 537 hp) and 800 Nm (590 lb-ft) of torque.
On the other hand, the BMW 3-Series looks like a pint-sized 5-Series and will feature a variety of turbocharged engines with outputs ranging from 143 PS (105 kW / 141 hp) to 320 PS (235 kW / 315 hp).