Palmeri had the 400,000 mile car make three pulls, with the following results:

  1. 366 HP and 372 lb-ft of torque
  2. 362 HP and 416 lb-ft of torque
  3. 362 HP and 449 lb-ft of torque

By Palmeri’s math, that would mean this 400,000 mile Mercedes AMG is making about 441 HP and 547 lb-ft of torque at the crank, which is damn close to the factory rating on horsepower and exceeding the 2003 torque figure claim.


Prevailing lore corroborates the idea that a Mustang dyno, as used here, tends to read lower than an also-commonly used DynoJet. And there’s no doubt that a hot and humid day is suboptimal for dyno pulls in general, indicating there’s a strong possibility that this geriatric old Benz has even more energy to offer up when conditions are right.

This video seems to answer the question of whether or not a high-strung car can hang on to its power after traveling to the moon and (almost) back. Unfortunately, it still leaves us wondering what had to be invested to keep this car this clean for 14 years and 400,000 miles.

In another post on his site, Palmeri establishes that the car has spent its entire life in California and been serviced exclusively at a Mercedes dealership. That, and the car’s immaculate appearance, suggests that the owner has been fastidious about maintenance, which can’t have been cheap.


So while we’re still not really sure if an old AMG is really a “bargain”, it’s cool to see that if you do put in the work to take care of one, it will keep making power as it racks up ridiculous mileage.