Izso, fantastic reply!
Right now I am looking at the Peugeot RCZ, SLK and the TT. All European. The only Asian rides are the370z that comes to mind.
I know a lot of ppl have this "if you have to ask, you can't afford it" mentality but I believe cash is king. I can save a lot of money if I ask the right questions and make the right choices.
370z aside, the three you mentioned the RCZ isn't really a sports car. You don't get the sports car performance, just the sports car feel. In fact FC for the RCZ is suprisingly good. about 11km/L for city driving. But you'll get Peugeot maintenance. Depending on your luck. Naza may or may not have spare parts and if not, you'll end up waiting weeks or months just to have your car serviced. Happened to a friends Pug 206. Naza is not well known for good aftersales service.
SLK is a Merc. Most Mercs are bulletproof and aftersales service is not bad. Can't really comment on maintenance as no one I know owns one.
I've already given you the TT figures. If you stick with stock 17" rims, then even tyres for that car is pretty "reasonable".
To some extent the "if you have to ask, you can't afford it" phrase does apply. But I think it was the way you asked the question that made it suspect. There's been 2 very famous "I wanna buy a sports car" forummers here who've been ridiculed by everyone here because of their ridiculous questions (later found out they were nothing more than 2 teenagers with big dreams and big mouths). I understand your point of view - you can afford a sports car but you're not going to be blatant about it and buy one that's the most cost effective. Yes?
But some might say (like me) that sports cars isn't about cost effectiveness. It's all about how it makes you feel. Between the three you've chosen I'd go for the TT hands down, mainly because I've sat in / drove all three before and I ended up choosing the TT for a friends wedding car because it was an awesome drive. Drove it for a week myself too. Could not bring myself to return the car...
And again - feel. If I have the chance to get a sports car today, it'd be the RX7 FD all over again. Or a Koenigsegg Aegera. But both are on different ends of the spectrum.