Change you spark plugs.
Don’t just clean and re-gap them.
Change your oil, filter and air filter.
Make sure your tires are properly inflated.
If it has a fuel filter in-line, change it too................
I drive a Scion FR-S 150 miles a day to work. I bought it new four years ago. It currently has 126k miles on it and has the original spark plugs.
I bought new plugs a few months ago for $100, but the dealership wants hundreds to install them because this is an extremely difficult job. So far performance and mileage have not been affected. I monitor my mileage tightly and it’s pretty easy since I go through almost a tank of gas every two days.
I also started a brake job a month ago but there was so much pad left I threw it back together and will check again at 135k.
Meanwhile, I’m on my 7th set of tires (Bridgestone RE11 or Michelin PSS). I drive it kinda hard on the Kentucky twisties. It’s a slot car.