This perennially cool Trastevere bar is housed in an old mechanic's workshop – hence its name ('brakes and clutches') and tatty facade. It draws a young spritz-loving crowd that swells onto the small piazza outside to sip superbly mixed cocktails (€10) and seasonal punches, and fill up on its lavish early-evening aperitivo buffet (7pm to 10pm). Table reservations are essential on Friday and Saturday evenings.