Namur is the capital of Wallonia, the French-speaking southern half of Belgium, sitting at the confluence of the Meuse and Sambre rivers beneath its historic citadel, and yes, you can rent a car right in the city despite the fact that Namur has no airport of its own. Most visitors arrive by train into Namur's rail hub, a major junction on Belgium's dense national network, and pick up a car from a downtown or station-adjacent desk rather than an airport counter; others fly into Brussels and drive down, with both Brussels Airport (Zaventem) and Brussels South Charleroi Airport serving as practical alternates roughly an hour or so from Namur by road.
Once you have a car, Namur makes an easy base for exploring the Belgian Ardennes and the Meuse valley. The E411 motorway connects Namur north to Brussels and south toward Luxembourg and Arlon, while the N4 and N90 fan out toward Dinant, a scenic riverside town about thirty minutes south, and toward Charleroi to the west. Belgium's motorway network is famously toll-free, unlike neighboring France, so a Namur-based road trip through Wallonia or into the Ardennes carries no tolls, vignettes or e-toll boxes to arrange, one less logistical detail compared with driving in France or Germany.
Driving is on the right throughout Belgium, and roads around Namur are generally well maintained, from the fast E411 corridor to the narrower, winding rural routes that climb into the wooded Ardennes hills further south. Winter can bring icy patches on the higher, more rural stretches toward the Luxembourg border, so it's worth checking conditions before heading into the hills between November and March. Parking in central Namur's old town is limited and often metered, so many visitors base themselves just outside the historic core when picking up or returning a rental car, keeping the walk into the citadel district short and simple.