Imbex (646-1222; Serrano 165) has 4WDs from US$29 a day.
Lots of buses and micros (US$0.15) ply circuitous routes around the city’s one-way streets, and all seem to congregate at or near the market between runs. They’re usually crowded, but fortunately, Sucre is a town of short distances. The most useful routes are those that climb the steep Av Grau hill to the Recoleta, and micro A, which serves the main bus terminal.
Taxis between any two points around the center, including the bus terminal, charge US$0.45 per person, a bit more after midnight.
Several places rent bikes, including Unlimited, Locot’s and Eclipse.