You'll be glad to know that there's a great range of both luxury and economy vehicles to rent in San Diego. What you opt for is largely dependent on your funds and what you're hoping to do. Specialty vehicles are all about mod cons and comfort. If you're splashing out, why not pick a fully kitted-out SUV, or perhaps a slick mid-sized vehicle? On the other hand, if you just need a car to get you around town as cheaply as possible, you're better off choosing a versatile compact vehicle (or something else that's unlikely to break the bank).