Like we said, we are professionals in finding quality used engines. We’ve a huge selection of engine suppliers inside our Driveline Motor networks and we have an excellent program for quality control and accountability. In the time it requires a mechanic to call up two or three of his buddies, we can get you estimates on multiple engines from a large number of suppliers and producers. Once we get you a great engine at an excellent price, we are able to ship it right to your mechanic’s garage by freight. It’s a win-win situation-you get a better price on a much better engine and the mechanic doesn’t need to waste his time playing telephone tag with junkyards. But of course, you can give us a call directly and save a lot more money.
Either way, you’re going to pay a huge sum on a whole new car or throw away money upon the markup on a utilized 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 see a big markup on the price of this part-and you might or may not have any say in where he gets the engine from and also less knowledge regarding the quality of the engine and the trustworthiness of the car recycler or junkyard that sourced the engine. Many mechanics possess relationships with a couple of auto yards where they get their parts and the perform little comparison shopping in your stead, which is certainly understandable-they’d rather be in the garage than on the telephone all day.
Another option that your mechanic might recommend can be an in-house engine. If they offer a good price and so are a dedicated engine shop, this might be a good option. But in our experience, we’ve discovered that only a handful of shops that do engines really have what it takes to accomplish a quality job.
Generally, they’ll source it to some 
other repair shop. And when that occurs, you’ll be billed a significant markup, not forgetting the hassle of having to go through two parties to get status updates and estimates on your own repair.