Angel Sosa Sr. opened Leader Service in 1977 on a high-traffic vehicular artery through the city of Miami. More cars drive past it every day than there are liars in the auto-repair industry, and that's a lot. Today, the shop is busy as ever thanks to a solid reputation for honesty, quality repairs, and commitment to excellence. Look for the Marathon gas pumps out front or you might miss the low-key, signless shop. Angel Jr. began turning wrenches there at the age of 18. Twenty-four years later, he's the boss, but if needed, he'll still get his hands dirty to personally explain what's wrong with your ride. Leader isn't the cheapest shop in town — with oil changes from $29.95, A/C service checks from $39.95, and front brakes on most cars from $129.95 — but we recognize the shop for its honesty. Like Angel Jr. says: "The best advertising is word of mouth. When you walk in knowing that someone was there and left satisfied before you, that's the best." He also offers this free tip: "Maintenance is cheaper than repair. Take care of your car, and you won't need a mechanic to fix it."