Evening everyone

The poorly Panda is finally off the drive so it's time to give my much beloved but much abused red Panda some tlc. Apart from an oil change and new plugs what would you all recommend to get her running sweetly again? At the moment she goes okay but smells a bit rich and doesn't get great mpg.

Be very grateful for any tips

Air filter. Might also be worth checking the coil pack and HT leads.

Was also thinking of new spark plugs as it's been a while. Anyone recommend any in particular?