I have always wondered why BMW and Audi engines seem to offer more horespower per liter than Mercedes and Lexus engines. The only thing I can think is that the Mercedes and Lexus engines produce more torque and a flatter torque curve for effortless, smooth power delivery.
I want to know if anyone has driven rivals back to back to compare the power delivery. Is my assumption correct? Are the BMW/Audi engines more peaky? Here are some examples:
BMW 545i: 4.4l V8, 325hp and 330 ft-lbs. torque
Mercedes E500: 5.0l V8, 302hp and 339 ft-lbs. torque
The Mercedes has far more displacement, but produces less power.
Audi A8L: 4.2l V8, 330hp and 317 ft-lbs. torque
BMW 745i: 4.4l V8, 325hp and 330 ft-lbs. torque
Lexus LS430: 4.3l V8, 290hp and 320 ft-lbs. torque
Mercedes S430: 4.3l V8, 275hp and 295 ft-lbs. torque
BMW X5 4.4i: 4.4l V8, 315hp and 324 ft-lbs. torque
VW Touareg V8: 4.2l V8, 310hp and 302 ft-lbs. torque
Lexus GX470/LX470: 4.7l V8, 235hp and 320 ft-lbs. torque
Mercedes ML500: 5.0l V8, 288hp and 325 ft-lbs. torque
Would you say Mercedes and Lexus are behind the game? Or do they willingly choose to have lower hp for a broader, flatter torque curve?