Competition in the palm of your customer's hands

• CEO: Art Agrawal • What it does: A mobile mechanic service that makes vehicle repairs at the customer's location. A consumer sends information on the vehicle, including the problem. YourMechanic replies with a quote or a fixed price for the work, including services and parts. If that's accepted, the mechanic drives to the customer's location. • Where: 32 markets, 22 states • Founded: 2012 • Headquarters: Mountain View, Calif.

On its website, YourMechanic.com posts brief profiles of some of its mechanics, along with customer reviews of their work. Here's an example. Grzegorz • Rating: 4.5 stars • Years of experience: 36 • No. of reviews: 230 Grzegorz grew up in Poland. He has an extensive training in European cars. He is also a diagnostic pro. • What a reviewer says: "Daryl," of Pleasanton, Calif, wrote: "Grzegorz was exactly what I was looking for. My son's Porsche 914 was driven every day up to five years ago then had some fuel injector issues and has sat idle for five years not able to start. I had trouble finding a 914 mechanic (rare) who would get it going let alone come to the house! Grzegorz went through the basic engine and got it running in an hour. I have him coming back for a full tune up. If you are looking for a very trustworthy mechanic, Grzegorz is your man."