I retired for two years after a long career as an entrepreneur in successful domestic and international businesses. However, I was bored and wanted to do something that helps people and continues to excite my business acumen. I decided to become a sales consultant and was fortunate enough to come to work at Brogan Cadillac. For the past year I have enjoyed the interaction with and the help I have given people seeking a new or pre-owned car.
Read moreDealership Experience
8 yrs
Industry Experience
8 yrs
Specialties & Trainings
Certified Cadillac Sales Consultant
12 Reviews
Write a Review12 Reviews of Joe Diamond
September 15, 2026
I have had a very good experience with a car trade at this dealership. The whole process was fast and professional, the sales person, Joseph Diamond was knowledgeable and answered all of my questions and this dealership. The whole process was fast and professional, the sales person, Joseph Diamond was knowledgeable and answered all of my questions and requests. The dealership is worth a visit for car people, they have a Cadillac Eldorado from the 60’s in the lobby.. More
Other Employees Tagged: Ron Rodriguez , Gary
July 18, 2026
Been purchasing cars at Brogan Cadillac since 2002 always treat their customers like family they are the best treat their customers like family they are the best More
Other Employees Tagged: Rakesh Mehrotra, Cliff Beebe, Anthony De los Santos
July 09, 2026
It was excellent and very good service and Jaylin was very friendly hundred percent OK everything thank you so much Jailyn very friendly hundred percent OK everything thank you so much Jailyn More
Other Employees Tagged: Rakesh Mehrotra, Cliff Beebe, Dennis Madigan, Tony Idone, Ron Marmolejos, Mike Ferenchiak, Anthony De los Santos, Russ Owren, Ron Rodriguez
May 01, 2026
Great place - the staff are friendly, efficient, and trustworthy!Must give five stars. I'll recommend it to my friends. trustworthy!Must give five stars. I'll recommend it to my friends. More
Other Employees Tagged: Rakesh Mehrotra, Cliff Beebe, Dennis Madigan, Tony Idone, Ron Marmolejos, Mike Ferenchiak, Anthony De los Santos, Russ Owren, Ron Rodriguez
August 03, 2025
Everything was done for me when I got to the dealership everything was explained be more happier with the service, the salesman and the dealership. Love, my car XT 4 everything was explained be more happier with the service, the salesman and the dealership. Love, my car XT 4 More
November 15, 2023
Our salesman James Mastrogiovanni was excellent. He was friendly, informative and went out of his way to help with questions and tech info. Highly recommend James and Brogan Cadillac. He was friendly, informative and went out of his way to help with questions and tech info. Highly recommend James and Brogan Cadillac. More
Other Employees Tagged: James Mastrogiovanni
July 26, 2023
Repeat customer at Brogan Cadillac . Very pleasant and professional experience. Joe Diamond was very helpful, easy to work with and no pressure to buy. And that is probably the reason wh Very pleasant and professional experience. Joe Diamond was very helpful, easy to work with and no pressure to buy. And that is probably the reason why I purchased another vehicle from Brogan Cadillac. Thank you! More
Other Employees Tagged: Tony Idone
August 13, 2022
Time to return leased car. When I leased my 2019 Cadillac XT5 a few years ago, it was one of GM lease offers deals. So, there were no haggling over price or banks rates, the o When I leased my 2019 Cadillac XT5 a few years ago, it was one of GM lease offers deals. So, there were no haggling over price or banks rates, the offer was the offer it was a smooth transaction. Now my lease is up, and I have decided to purchase the vehicle. I contacted the original salesman, Joe Diamond. I explain to him that I was ready to purchase the vehicle off lease. He then said he would call me back once he has all the financing put together for me. When he called me back, he said that my credit was great and was approved by the bank. But then came the Dealer “Stealer” pitch. He said he could not sell me my off-lease vehicle until it was inspected by their technician to make sure the vehicle was a safe car to dive (what?). he then told me that the inspection would cost me $695.00. at this point was getting annoyed, I knew it was BS. I said Joe I’m not paying that. He then gave me a second option, the second option was, if I were to have the vehicle Pre-own Certified, he can get me 2.9% financing though GM Financial and that it would cost me $1,500.00 to have the car Pre-owned Certified, and if I don’t have the vehicle certified, my interest rate would go up significantly. So, I went to another Dealer to get some answers because I knew something was off with the having the vehicle "Certified”. After speaking to the salesman, I was informed that my vehicle was ALREADY a Certified vehicle. So apparently when a vehicle comes off lease under the original Manufacture warranty, it’s automatically a Certified Pre-owned vehicle. It’s just another way for the dealer to get more money from me (the consumer). I understand that Joe Diamond works for this dealer and he has to follow their rules, but he is also in cohorts because he works off commission. People please, if it doesn’t sound right, go online and research it, and then go to different dealers because 90% of them are trying to get you. More

