Never seen one go past 400k kms??? Are they blind?
My c280 had 255000 miles when I sold it and is still going strong. My 99 c43 has 273000 miles and is almost like new all over! Dead reliable and no signs of letting go at all. Mileage is just numbers on the dash. A good car is a good car. Don't let the numbers on the dash fool you.
Bird in the hand...