First of all, there's an impressive variety of both economy and high-end rental vehicles on offer in Ajuda. What you go for depends on your funds and what you plan to do. Prestige vehicles are hard to beat if you're all about comfort and class. If you want to indulge yourself, why not pick up an elite SUV, or perhaps a slick mid-sized vehicle? Alternatively, if you're just after something to get you from A to B as efficiently as possible, stick with a versatile compact vehicle (or something else that won't burn a hole in your pocket).