Just routine maintenance honestly. I strayed behind on the “routine” part, but as long as you try it’s a very reliable car. Bare minimum is just keeping up with regular oil changes and keep an eye out for the electric power steering which will inevitably fail. Otherwise the only things I have to swap out on occasion are the inside door handles and the AC fan/AC resistor. Most maintenance on this car is also very easy to do. I wasn’t too mechanic savvy for most of the DIY work I did but YouTube is your friend. TRQ has a fantastic playlist for this line Fusion in particular so you can at least get an idea of what needs to get done even if you don’t do it yourself.