I'm no expert on cars, in fact I'm just getting started on my Prius. But I know alot of about the details to fix parts and problems on the Gen 2 prius, ie, water pump belt, spark plugs, headlights, other lights, changing oil etc. Not too long from now I might be able to change springs, tires, receivers, headlight assemblies etc. I actually enjoy this work and I'm thinking about offering my services on craigslist locally for a moderate fee, and maybe free to seniors and disabled. MY question: is this a bad idea for liability? Say if I ask $40 to change someone's spark plugs and something happens to their car next week that could be plausibly related to my spark plug change (but no real evidence), can they come back and take me? What if a really bad person does the same thing intentionally? I'm looking for informed opinions, preferably if you have some legal experience or experience as someone who provides somewhat similar services.