Originally Posted by T Bone
420 is PS (another standard)
414 is SAE HP
I actually entered 309 KW into the software and it converted to SAE.....all the same.
From Wikipedia: PS is defined as 0.73549875 kW, or roughly 98.6% of SAE horsepower
Thanks T Bone,
so the RS4 has 414 SAE HP as well?