'03 S600 Dyno Results
481.5 x .15= 72.225
72.22+481.5=~553 Crank HP
Still very underated, and thats a good error that MB can make more often!
Also, FWIW the way in which you calculated the engine HP is incorrect. A 15% loss implies that 85% of the engine HP is delivered at the wheels, or HP * .85 = RWHP. 550 * .85 = 467.5. However, if you rearrange the above equation, you will see that HP = RWHP / .85, and 481.5 / .85 = 566.5, which would be the accurate engine HP rating if we assume 15% driveline loss.
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The Best of Mercedes & AMG
MB has always been known to be VERY conservative when putting down HP on paper.
But damn! 480 HP at the wheels??? that is nuts man.
We need someone with a new supercharged S55 to post up a dyno. I think the S600 > S55 inregards to performance.
If this is the case for all the x600 engines, than the AMG cars are slacking badly...
If this is the case for all the x600 engines, than the AMG cars are slacking badly...
Not putting the S600 down by any means, it is a great car!
That AMG badge would be pretty cold comfort as my taillights receded into the distance

FWIW, according to RENNtech the S55/E55s dyno out around 390 RWHP. Don't know if that's on a Dynojet dyno; if it's a mustang dyno, then 430 is a more comparable number. Still down a fair bit on HP and a lot on Torque compared to the 600s, however...
AMG cars would still have the advantage of brakes, suspension, body effects and the AMG badge.
Not putting the S600 down by any means, it is a great car!
Seems like the x600 engines BLOW the supercharged v8's away. And with all the EXTRA's that come along with the 600, at very close prices, the 600 will be the better choice.
AMG badge is nice, but I like the v12 badge also.
Don't get me wrong guys, if I had the money I don't know which way I'd go, S55 or S600 very hard desicion. on one hand you have the AMG on the other hand you have a twin turbo V12. both are sweet.

Until then we'll just have to wait for AMG to do something with the S600
And they already "doing" something with the S 600. That is what the S65 will be, with 612 hp and 738 lb/ft. I cannot wait till somone dynoes that one.
... on a Dynojet 248 dyno, measuring rear-wheel horsepower. Let's just say the factory may have underrated this car a tad!
I need to get me a '03 S600, if my wife would let me.
Saw new 2003 S600 up on rack getting ready for delivery....underneath was the most amazing exhaust system I've ever seen....4" stainless steel exhaust tubes..with massive converters like I've never seen.......guys, that's Formula One/NASCAR spec!! Shop foreman was saying he had heard of new V12 being underated by MB....said Maybach config is actually close to 800 HP at flywheel. Hmmm...





I'm waiting to see some V8 Kompressed dynos. They few I have seen show nice increases over what Mercedes says as well.
https://mbworld.org/forums/showthrea...threadid=32017
The twin turbo V12 SPANKS the 55 supercharged.
600 > 55


