Never did it before and I was not looking forward to it because I've read what a PIA it is. It only took me 40 minutes. The trickiest part was getting the new filter in and then, not knowing for sure that it slid in without crumpling. It was a Mann filter and it came with wordless directions. It seems the same filter and procedure is for a Ford Focus. One thing the pictures said was to not unplug the gas pedal quick disconnect. I'm not sure why but I didn't unplug it. It would make it a little easier if you could unplug it because then you could get that sucker completely out of the way. With it left plugged in, you kind of have to swing the pedal over the top of the brake or wherever you can to try to get it out of the way. And there is no good way that I could see to slide the filter in without bending it. Oh well. It's done. It definately is a job that makes you sore the next day from the twisted up positions you'll be in. The old filter was filthy. 66K on the car and I don't think it's ever been changed. The manual says every 15K but I think that's overkill ridiculous. I'm gonna do it every 30K or so.