2014 Chevrolet Spark New Engine

You didn't say what the problem was, but for the most part, you have no reason to complain if the car is fixed. Lemon Laws vary by state, but in general, they apply to three or more failed attempts to solve the same problem within the warranty period, or the car is tied up for a certain number of days. The district representative will get involved with that, but you never win. You might get a new car, which is what you have now, but you will be expected to pay for the use you got just as though you had simply rented the car for a month. Your current car can't be sold again as "new", so it's going to have to be sold at a reduced price. With your really low miles, that may be negotiable.

We don't know for sure what was done. If the repair called for replacing parts that were on back order, that's when the manufacturer might tell the dealer to just replace the entire engine. A new engine is at least as good as the original one, and it may have upgrades that were incorporated after your car was built, to address common problems. There's two downsides to installing a new engine. The first is the original one was installed by a group of people who do the same thing day in and day out, and they follow a very specific procedure. This is a new experience for the mechanic, and even very experienced ones can overlook an important step or make a mistake. Some of those steps may have minor consequences that don't show up for a long time.

The second thing is if you have a car that is expected to become a classic or collector car, it will be worth more with the original engine. For 99 percent of cars and car owners, that's not an issue because the car will be in the salvage yard in ten or fifteen years.

Be aware too that GM is one of the world's three worst manufacturers when it comes to customer-unfriendly business practices. If you did indeed get a new engine and the problem is solved, it proves they're trying to keep you happy. The dealer will typically do something for you in the way of an apology, like some free oil changes or things like that, but that's up to them.