I bought a used vehicle here recently and had 2 different experiences. While making the purchase, they stayed later than closing and accommodated me past their posted hours.
After purchasing, there have been a couple of issues that didn't sit right and kind of annoyed me, it seems after the deal is signed, you're not really a priority anymore.
First, it should be common courtesy for a dealer to put more than 1/3 of a tank of gas in the car upon delivery, especially when the dealership is next to a gas station. Second, I had bought the car in Cohasset, had to go to Hanover to complete financing, back to Cohasset to pick up the car. A week later when my registration arrived (they didn't notify me that it came in, I had to call them a couple of times), I had to pick it up in Cohasset, low and behold their inspection sticker machine was down so I had to go to Norwell to get that done.
Once I got my vehicle home, I had noticed that the sunroof did not open, I had brought this to the attention of my salesman and he told me to have the Norwell location look at it, which I did and they indicated that they did not have to correct computer to sync to my car's computer, understood as I did not purchase a Nissan. I called Coastal about an hour after I had talked to my salesman originally to let him know this and to ask him my next steps, he really didn't even remember the original conversation that we had about an hour earlier. He indicated that I should contact the service manager that Monday to discuss it. I called the service manager and the first thing she asked (quite rudely), "Did you purchase a warranty because this could get expensive?". I had indicated that I had not and that since I only had the vehicle a week and that this was like this from delivery that it should be looked at and fixed at no cost to me. I got the opportunity to bring the car back in for them to take a look at it. They indicated that since I did not purchase a warranty that they would be of no help to me. Their suggestion was to purchase a vehicle warranty from AAA and then file a warranty claim thereafter to get it fixed. A warranty from AAA could cost thousands of dollars, additionally I find it very dishonest to purchase a vehicle warranty from a business just to get them to complete this work. Their confidence in this plan made it seem like they've pulled this stunt before. It is a shame because I've worked with their Norwell location for servicing another vehicle I own and have had great experiences, I will not be recommending Coastal to anybody and will not give them the satisfaction of servicing my vehicle.

Great wash, free vacuums and plenty of towels. Friendly staff and convenient hours. Not much more to say, they have an easy location on rt 53 in Hanover. Good prices.

Just did my financing here as I bought a vehicle from one of coastal's other dealerships. Ed was a great guy to work with, no pressure at all. He was well prepared when I came in and had me out the door quickly

Went in and ordered floor mats for my truck. The guy repeated the order back to me, so I knew it was correct. When I went to pick them up they were the wrong color, and the guy told me that I'd probably like them better and even after I said they were the wrong color, he said the color I wanted was different than my interior. Pretty rude and dismissive. I ended up returning them and went with another retailer instead of purchasing another item from here.