Wrench, a 7-year-old Seattle startup that offers a mobile car repair service, has reeled in another competitor with the acquisition of YourMechanic, a Silicon Valley startup founded in 2012 that also offers repairs. YourMechanic will add more than 350 technicians across 30 states to Wrench’s network. The company had raised more than $40 million from investors including Andreessen Horowitz and SoftBank, and was a Y Combinator startup in 2012. Terms of the deal were not disclosed.