I've had my car for nearly two and a half years, closing in on 29,000km. Total amount I've spent on the car so far is $26,635.79. That includes a lot of items outside of strict maintenance and service, such as track day participation, full body PPF, wheel refinishing(twice), and a few aftermarket bits and baubles. Take those out, and the total cost is $17,202.15.
Breakdown:
-Fuel: $4,706.58 (2,943L averaging 10.3L/100km)
-Insurance: $9,034.09 (roughly $3k per year)
-Parts and Supplies: $4,819.29 if I include everything, $3,349.48 on the essentials. The bulk of that is for the replacement tires ($2,330). That also includes things like motor oil that I stock up on when it goes on sale, so some of that cost hasn't been "used" yet.
-Service: $8075.83, but the bulk of that was for the PPF and wheel refinishing; take that out, and it cost me $112 for tire mounting. I DIY the routine maintenance so far, which has only consisted of two oil/filter changes.
The car has been in the shop twice: once for the three recalls (thermostat, 3rd brake light, gas tanks) and once for various squeaks and rattles. Otherwise, the car has been reliable.
I haven't broken down the cost of the actual oil and filter change, but it is about $100 if you can get the oil on sale. Getting it done at the dealer would cost more.