I am pleased to highly recommend Diamond Marine. They just replaced my T top on my like new boat and they did a really wonderful job! All the little details were addressed...as well as the big ones...professionally. Caulk job, fastening, accessories. layout etc . are perfect. This was my 2nd visit for boat work. Happy with results from both jobs. I never write reviews...but I wish to write this unrequested recommendation. Thank you again ...Tom and staff. read more

These people are the further from honest, straight shooters. They begged me, even the owner, to take down my 100% accurate review of their dishonent and shotty work. I did, but I should not have. boat motor they sold us was inoperable weeks after the purchase. Spent time in the shop summer '24, all spring of '25. they insisted they were doing us a favor and put a 14 year old motor on our boat for another $2500. That motor worked temporarily but now that i brought it to a real mechanic after issues, he informed me the computer in the motor is shot and thats why the issues exist. So they sold me a second garbage motor and told us they were doing us a favor. Over 2 grand in repairs a year after they did the work. read more

Bought a new trailer and sold a boat and trailer to Diamond marine. Had a great experience with both transactions. Great customer service especially Karl Muller. Down to earth owner who's easy to talk too. Would recommend to friends and family. read more

Kurt is the coolest player in the game. Good guy, solid family man, always gotten honest opinions, options and work out of him. Godspeed. read more

Absolutely the WORST place we have ever used. Total frauds. When they say "get it in writing", seriously, GET IT IN WRITING!!! Don't let Mark and Karl give you the warm fuzzy feeling that they will stand behind their products as they certainly won't. We purchased a used trailer from them and was told by Mark that it was a VERY reliable trailer. We therefore made the 2 1/2 hour trip from NJ to CT to purchase it and 4 weeks later, when our boat came out of storage and the marina put our boat on it, the whole front axle snapped in half from rust rot that Diamond had covered up. My husband, who is disabled, was not able to crawl under the trailer to inspect it when he arrived. I spoke with Mark extensively on the phone and my husband asked him about the trailer prior to the purchase and he assured us both it is free from defects and is a very sound trailer. What a load of bull. I guess they LOVE taking advantage of handicap people. When my husband signed the bill of sale, the owner Karl said verbally, "we stand behind everything we sell...if you have a problem with anything, I will take care of it". We called Mark and Karl immediately and not only did they try to charge us $600 for transportation back to them as the trailer wasn't safe to drive but only offered $3000 of the $3,700 sale price AND they said they would only apply it in credit toward a new trailer which would cost $4500. Meanwhile, I was accumulating extra storage fees from the marina which wound up costing me $447 . What a nightmare. So we would have been out almost $2K if they would have "helped us out and stood behind their name" as they put it. Yeah, thanks but no thanks. Since we needed to purchase another trailer immediately to avoid more storage fees, we got one locally for $500 less than what he was quoting us for a brand new Venture trailer. A TOTAL nightmare dealing with this company and they didn't even have the decency to offer to reimburse us for any of this!!! I would NEVER EVER recommend this place. read more

My family recently got a boat that needed some work. Among other things, one of the the Mercury Optimax engines was not running. We started with getting work done at the local marina where the boat was kept. They thought worse case scenario they could get the engine working with a couple grand and a couple of weeks. They didn't know what was wrong with the engine, but basically started by just replacing random parts without any definite plan. After about 4k of sunk costs and 2 months of wasted time without any progress, we finally decided to move the boat to a Mercury dealer to see if they could identify the problem. At the Mercury dealer the boat languished for another couple of months while they tried to fix the problem. They stated that they found the problem and could get the engine running in 2 weeks. Supposedly it was a 900 dollar part and an easy fix. They indeed got the engine running, but almost as soon as it started to work, it developed another problem that they could not fix. We sunk another 2 grand and another 2 months at this second location. We finally decided that the engine was not salvageable and that we were going to repower. So after 6 grand and about 4 months, the motor was gone. After shopping around, Diamond Marine definitely had the best price by several thousand dollars. We were worried about the repower because we got burned at the other two places so badly. We expected that over optimistic time tables and unexpected costs were the norm. After a lot of back and forth we decided to repower. Tom was very professional and straight up with everything. They quoted us a price and a date for likely delivery. Everything was done in about 2 weeks time exactly as scheduled. The price was exactly as quoted. And that was it. We drove our boat away and haven't had an issue. Now we have the reassurance of having 6 years of warranty and Yamaha power on the back. During the repower process, Tom would call with updates, which is a refreshing change from the previous situation when we had trouble tracking down the guys working on the boat from the other two locations. Overall it's been the only part of boat ownership that has cost exactly as much as promised and happened when promised. read more

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i searched around from different states and you cannot beat the deal diamond marine has to offer , i drove over 2 hrs and it was worth it, the operation was a success Moose, read more

Purchasing a boat through diamond marine was a great experience! The staff was kind , courteous and professional! They took care of everything! read more

We have been searching for a new boat to replace our first boat for several months. We went to the Norwalk boat show and the Diamond Marine Key West display was the first we saw. Captain Dan explained all the ins and outs of the various models. He spent a lot of time with us and really seemed to understand what we were looking for in a boat. The next week we walked into the showroom and our ideal boat was the first one we saw and we decided to make the purchase. The entire process was wonderful and went better than we ever could have expected. Everyone involved was friendly, knowledgeable and professional and we ended up with a great boat! read more

Mark was a pleasure to deal with, professional and very helpful.