The test was done with the car running at a variety of simulated speeds, including idle. They have a dyno the wheels roll on and based on the weight they add or subtract some resistive load. I missed the event but my wife says the car was run for around 5 minutes. In CT they do a bunch of checks on the VIN, then ask you to get out and they drive it into the bay with the dyno. You stand in a little cement block corridor with windows to see what it going on. They actually have a fan blow air across the car too. I thought the car was running pretty good, and I guess the state agrees with me now. Have a good one, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)