Your question was: I guess that might be a turn off for him.
Firstly let me just start by saying that if this guy really likes you then the fact that you have no car shouldn't be an issue at all!.
Why don't you arrange a lunch date using Match.com and you could get the train during the day? Don't be embarrassed that you don't have a car, that's what public transport is for..
Or you could arrange for him to come to the area you live for a drink then it is him who has to worry about transport..
Most importantly if think that you and this guy should get together then arrange something quickly! You don't want to go on just meeting on the internet for so long that he just consider you a friend and starts asking your advice on him dating (online dating with Match.com) other girls!.
If the guy likes you, it shouldn't matter to him whether you have a car or not. If he has a car and he likes you, trust me he won't mind picking you up. If it's something during the day, you can take the train or bus to meet him half way. Don't let him feel like he always have to come and get you, if he has to do all the work. That will be a turn off...
It depends on why you don't have a car, I suppose. If you live in a city (like NYC or SF) where a lot of people don't have cars or drive then ... sure, that's understandable. But, if you don't have a car because of some sort of trouble you were or a DUI or something like that then ... that's not good. .
I disagree with the gals who said that if he likes you, he won't mind. While that is idealistic and what we'd LIKE to believe, it's not reality. .
Let's say the shoe was on the other foot ... and you liked a guy in his 30s who didn't have a car ... many women here would be saying "well, what's wrong with him?" ... but, as a women, the guy is expected to step up the plate and not mind????? Me thinks not. ..
You tell him exactly that - you don't have a car but hope that this won't serve as an impediment to getting to know one another. Good luck..