Mind you the Ascent was my parents 08 car, and my local mechanic's said that, the fuel from before the first 1000km's tries to AVG out your usage, so my parents drive very very... umm, slower than grandparents, so I assume it AVG their driving... and I'm not joking it was between 700-800KM's, yellow light at around 30-35ish, and drove till about 2KM's on the range, then the car wouldn't be a car anymore, but turned into just a piece of 20K metal... My conquest from Last year, which is BRAND NEW & in the first 1000KM's was driven slower than my parents, still says 350-420... I have no idea... I haven't checked the build date on my parents car, I just assumed it was an 08 since it was bought before MAY in 2008... is that yor auto???