While in principle this seems like a great way to save money, and it very well might save you on some upfront costs – it’s obviously not that simple. Most of us send our car to a garage and a qualified mechanic for a basic service; even though with some detailed instructions, the right parts, patience, some swearing, a big mess on the driveway, some more swearing, and perhaps quite a few days – we would probably get there… but you have just spent several days saving a couple of hundred pounds, there is a lot to clean up, 200 emails and messages to get back to, you’ve barely seen your family…. and do you really want to drive the car and trust it?? What business could you have generated in that few days while someone else did the service?