Thats not bad at all. But it's probably best to compare this to what other automotive publications have had to say about it and how they rated it.
Here is the MKZ's scorecard:After a week in the MKZ Hybrid, we found the sedan delivers great mileage, especially when you consider its size. If luxury is the main factor driving your purchase decision, look around at all the players. And at the end of the day, buy with your wallet, and at your technological comfort level.