My wife and I bought this car new and have put over 60,000 miles on it with absolutely no mechanical problems. Only scheduled maintenace performed. I get over 30 mpg on the 4 cyl and I am very happy with the gas mileage since fuel costs are out the roof. This car is not for enthusiasts who love the driving experience, but for a family or as a commuter, it can't be beat.
Fuel economy, comfort, and trunk space.
There are always improvements to be made, but no reasonable improvement comes to mind.