A lot of bad reviews on Amazon for this, seems to break after a few uses. I would stay away.

I've been using mine for three years but it's mostly a weekend/seasonal only car. Threw a code once last year. The cause was the little flapper valve wasn't making a good seal. Removed cap and worked the seal to seat correctly again. Took all of five seconds. No codes since. I like the convenience of filling up with this cap. My other three vehicles have caps but that's no big deal either screwing with them.

mine broke after 3 months... thank god it didnt fall in the tank (flapper)