See How Much Horsepower A 400,000-Mile Mercedes AMG Really Has Left

                                    

Depreciation hits used Mercedes AMGs like an anvil coming down on Wile E. Coyote. So you’ve got to imagine

that once an AMG’s odometer his a ridiculous 402,292 miles it’d be totally worthless, right? You can decide for yourself after seeing how much power this well-loved 2003 Mercedes E55 AMG is still making.

The E55 was rated at 469 horsepower and 516 lb-ft of torque at the crank by the Mercedes factory in 2003. That was apparently enough to get it from 0 to 60 in 4.5 seconds and earn praise as “a compelling case for the creation of the American autobahn” from Car & Driverwhen the car came out.

Here in 2017 YouTuber, AMG enthusiast and our dyno-tester here Alex Palmeri posits that the car’s drivetrain “should” create about an 18 percent power loss, which would mean a young and virile E55 AMG would have put down about 385 HP and 423 lb-ft of torque to the wheels.

Palmeri dyno’d a 2006 E55 with 69,000 miles (the same bodystyle and drivetrain) in decent-looking condition with a result of 380 HP and 447 lb-ft of torque to the wheels. The 400,000 mile car wasn’t healthy enough for an earnest comparison at that time, but as of last week, the elder car had been repaired (an intake cooling issue basically caused the supercharger to be non-functional) and rolled back onto the Mustang dyno for another attempt at making maximum power.