At seven I'd help Dad in our shop in Istanbul. I know how shops work. When I see a customer's face, I know what they'll be like, or if they're going to steal. Two weeks ago, someone put two bottles of champagne under their coat. If you come in skinny and go out fat, I'm going to know. The hours are long, sometimes people are rude, but I'm happy most of the time.

I like working on the gearboxes of big-engine cars. I'd like a BMW; I've got a Corsa. I took one year to study car engineering, but my brother said, "We've got this business now." I thought I could do both, but I had to choose between college and the shop.

I've got a system in the car with big bass. I had a 500-watt subwoofer, but I blew it up. Then I had a 600w, an 800w, a 1,000w. It's not enough. I can shake the bottles in the shop. It makes people look at me as I pass - that's a good feeling.

I'm happy knowing about 95% of the prices in the shop. We get the best-quality tags and I stick them on myself. They're really stuck on. You have to rip them off. Some customers try to change the prices, but I know what's on the tags.

I don't get wages. This is our family business: that's so important. Without me, they can't do anything. Without them, I can't do anything. You need your right arm, don't you? You wouldn't be able to survive without it - that's how it feels. If you work with family, you can do everything better.