I think I emitt a lot more exhaust than other cars. Actually its true when I roll up to a drive thru it reminds me of the sceens from Uncle Buck when he picks up the kids from school. Is this a common thing for VX's or is it another reason why my I have been driving with a CE light for about 2 months now with poor mpg 13mpg current before CE light 18mpg...........I have tried premium gas and cranking the gas cap to about or almost 30 clicks (2 full rotations.) My codes read for the CE light is "random multiple cyclinder missfire" #po300////Thanks for any help