Mike, Tango (2005 M620) is doing approx 110 before light comes on, then only 22 max till empty.
 Tank IS plastic tho, so different pump placing too
  C
 Ps: check out too on the UKMOC board, as is a bi-monthly discussion....................

  edited to add: My M1000sie, same engine as your last MS, only manages 120 tops to the tank, & about 15miles  from when the light comes on. On occasions, the mileage has been just under 100 miles till the tank is empty!!
  [Edited on 10-11-2005 by CK and AK]