Originally Posted by guv1976

All NYC taxis -- whether four-passenger or five-passenger -- charge the same metered rate. There are some minivan taxis, so these are probably the five-passenger ones. There will likely be a taxi dispatcher on duty at the taxi line at LGA (at which terminal will you be arriving?), so let the dispatcher take a look at your luggage (and car seat), and perhaps the dispatcher will try to get you a minivan taxi if one is needed.