Like we said, 
we are professionals to find quality used engines. We’ve a huge selection of engine suppliers in our networks and we’ve an excellent program for quality control and accountability. In enough time it takes a mechanic to call up several of his buddies, we are able to get you estimates on multiple engines from dozens of suppliers and manufacturers. Once we get you an excellent engine at an excellent price, we can ship it straight to your mechanic’s garage by freight. It’s a win-win situation-you get a much better price on a much better engine and the mechanic doesn’t have to waste his time playing phone tag with junkyards. But of program, you can give us a call directly and save a lot more money.
Either way, you’re likely to pay a huge sum on a brand new car or dispose of money upon the markup upon a used engine that originates from who knows where.
Alternately, your mechanic may offer to discover a used engine to put in your car. Again, you will have a big markup on the price tag on this part-and you may or might not have any state in where he gets the engine from and also less knowledge regarding the quality of the engine and the trustworthiness of the auto recycler or junkyard that sourced the engine. Many mechanics have got relationships with one or two auto yards where they get their parts and the do little comparison shopping in your stead, which is certainly understandable-they’d rather be in the garage than on the phone all day.
Another Driveline Motor option that your mechanic might recommend can be an in-house engine. If indeed they offer a good price and so are a devoted engine shop, this could be a good option. But in our encounter, we’ve discovered that only a small number of shops that perform engines really have what it takes to do a quality job.
In most cases, they’ll source it to some other repair shop. And when that happens, you’ll be charged a significant markup, not forgetting the hassle of having to go through two parties in order to get status updates and estimates on your repair.