In the print version, what popped out is that the brake pads are only half worn
at the end of their 40K miles test.
C&D projects the pads will last 100K miles. Are you claiming part of this is due
to engine braking ? I doubt it.
As has been pointed out by C/D, R/T, Automobile and every other reputable automotive publication that undertakes long term testing, some of their data (such as brake pad wear) does not translate to the real world. Guess why? Because they tend to take vehicles like this on long road trips where the brakes are -- relatively speaking -- barely used. Think about it: if you drive 10,000 miles and use the brakes 200 times, they last 10 times longer than if you use them 2,000 times and 100 times longer than if you use them 20,000 times.
So...go back and re-read the other responsive posts, then read them again and again until this single fact soaks in:
THE DOMINANT FACTOR ON BRAKE PAD LIFE IS THE DRIVING HABITS AND CIRCUMSTANCES OF THE DRIVER, NOT THE COMPONENTS/COMPOSITION OF THE THE SYSTEM.
You used the term ad hominem
in answer to another post. Apply the more basic
principles of logic and you'll understand that the capitalized language above is the answer to your question.
And if you still disagree, then go buy the archive of the long term test from C/D on the ML320 and see what their extrapolations revealed for your vehicle.