Well that depends where you plan to wander. Downtown Belfast, about 2 miles from Belfast Airport (BHD-George Best Belfast City), can be a little tricky to drive in. Make it easy on yourself by going for something small, fuel-efficient, and simple to operate. Take into consideration that Belfast is also the gateway to many of the rocky coastlines in Down. If your vacation is more about tearing down the open road, then you may like something with more trunk space and room to move about. How about a full-size car or a standard SUV?