I have been consistantly getting 220-225 miles per tank of gas and now after having the # 5 plug and coil replaced all of a sudden I have gotten 195 mi. out of my last 2 tanks full. What could the ******* have screwed up this time? I also had major coolant leaking after I got the car back and when I brought it in to have it looked at they told me 2 hoses needed to be replaced for $614.00!! I took the car back and found 1 hose coming off and just put a real hose clamp on it and it stopped leaking and the other one is very minor so I'll look for it later but the milage is way off. Could it be a vacume line or something? Buy the way I have only gotten 40 mi. from the first 1/4 tank of the third fill up since the work was done. Any suggestions would be appreciated.