Yokahama Sports V105's 205/55R16 91V MO Made in Japan. Recommended running pressures far too high for comfort imho but will help get you maybe another 5mpg.
MO is a tyre manufactured to a Mercedes specification. Huge arguments whether there is any "discernible in real life motoring" difference between these and the same non MO labelled tyre. Consensus seems to be ---- not much.
My car came with Eagle NCT 5, but that was in 2006 well before BlueEfficiency.... and yes the make was listed in the service book next to the options list.