My running costs in almost 2 years and 7000km has been fuel only plus one annual service/oil change.
Tyres are barely worn. Petrol is irrelevant to the fun provided. I have no idea what it uses.
I don't push it so i've never had to push it
7,500 miles and should get another 2,500 out of the tires. Mine has been trouble free as well. Granted it's a newer one but my dealer attributes it to " knowing how to drive it" and "keeping after it". I ran it in properly, never lug it, and keep it between 3,000 and 4,500 RPM 90% of the time. I'm always attending to any creaks, rattles or squeaks , and inspect her frequently. Service at 1,000 and 4,000 and 7,000 as required. No other expenses beyond fuel... a pretty consistent 25-28 MPG. The roughly $50,000 I invested in my joy is now about $7/mile. Super cheap. Best money I've ever spent.