I'm always a bit surprised that people are surprised at the cost of ownership of a car. Maybe it didn't hit me as hard when I started driving (I drove older cars, and fixed a lot of things myself, which helped), but it's undeniable that driving a car results in significant ongoing costs. Your tyres overall will collectively be costing you somewhere around 10p/mile (25000 on a set of 4 at £50 each); your clutch rather less at half a penny a mile. You're going to need a new battery every 4 years or so - not so much of a mileage cost, more a time-based one. Bulbs can cost a fair bit to replace if you pay someone else, but you're going to be spending a bit of money on them over the years, likewise stuff like windscreen wipers. Brakes need replacing fairly regularly, depending on how you drive the car, etc. I think I usually get 2 years, or about 60,000 miles, between brake jobs. But you also need to be aware that at some point, discs and drums will need replacing, albeit less often than the pads/shoes, and if you're unlucky, as I was last year, you'll find that a caliper has seized and needs replacing. Pads all round, 2 discs, and a caliper cost me £600 (fitted).
If I average it out, though, my annual maintenance costs on the car are probably around the £4-500 mark. It's got a few dings and dents, which I've never bothered to get anything done about (it's actually a cosmetic write-off, having become tractor-smoothed as a result of an encounter with one), and I do all my own oil changes and basic maintenance, which means not all that much in parts and dead cheap labour.
It's the price you pay for the convenience (or essentiality, if like me you live in the sticks) and fun of having an independent means of transport. But yes, it's also a source of fairly continual unexpected expense.