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Performance Buick GMC

(1,981 reviews)
Visit Performance Buick GMC
Sales hours: 9:00am to 8:00pm
Service hours: 7:30am to 5:30pm
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Sales Service
Monday 9:00am–8:00pm 7:30am–5:30pm
Tuesday 9:00am–8:00pm 7:30am–5:30pm
Wednesday 9:30am–8:00pm 7:30am–5:30pm
Thursday 9:00am–8:00pm 7:30am–5:30pm
Friday 9:00am–8:00pm 7:30am–5:30pm
Saturday 9:00am–6:00pm 7:30am–4:30pm
Sunday Closed Closed
2026 consumer dealer award
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2026 consumer dealer award 2025 consumer dealer award 2024 consumer dealer award 2023 consumer dealer award 2022 consumer dealer award

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New (888) 378-7934 (888) 378-7934
Used (888) 767-9904 (888) 767-9904
Service (855) 346-5620 (855) 346-5620

Inventory

See all 302 vehicles from this dealership.

About our dealership

This seller has been on Cars.com since August 2020.
Performance Buick GMC is your trusted Buick GMC dealership in Cedar Knolls NJ and the reason why our loyal customers from Morristown Parsippany and Randolph keep coming back. From the time you enter our showroom when you service with us you can expect to be treated like family each and every visit. We offer an extensive new and pre-owned inventory as well as our competitive lease specials finance options and expert auto service. We are dedicated to providing exceptional customer service to Hanover County and being an integral part of our Cedar Knolls NJ community. We look forward to seeing you soon!

Service center

Phone number (855) 346-5620

Service hours

Monday
7:30am–5:30pm
Tuesday
7:30am–5:30pm
Wednesday
7:30am–5:30pm
Thursday
7:30am–5:30pm
Friday
7:30am–5:30pm
Saturday
7:30am–4:30pm
Sunday
Closed

Meet our employees

Reviews

(1,981 reviews)

A dealership's rating is based on all of their reviews, with more weight given to recent reviews. Includes reviews of Performance Buick GMC from DealerRater.

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Team did a great job being responsive and accommodating to my request for a specific Sierra, which they located in a timely manner.

Team did a great job being responsive and accommodating to my request for a specific Sierra, which they located in a timely manner.

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
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People on the phone weren’t super nice while setting up the appointment. Eddie was great and so was the service guy, Mike I believe. Selected drop off and pickup and my car was not returned the same day, pain in the butt to go Saturday to get it.

People on the phone weren’t super nice while setting up the appointment. Eddie was great and so was the service guy, Mike I believe. Selected drop off and pickup and my car was not returned the same day, pain in the butt to go Saturday to get it.

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
4.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
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Performance Buick in cedar knolls nj are very honest and he was a pleasure doing business with them

Performance Buick in cedar knolls nj are very honest and he was a pleasure doing business with them

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.
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Excellent customer service on all ends. Anthony L. and Steven S. Couldn’t have made my experience any better!

Excellent customer service on all ends. Anthony L. and Steven S. Couldn’t have made my experience any better!

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Shopped for a used car
0 people out of 0 found this review helpful.
Dealer response

Thank you for sharing your experience with us! We're thrilled to hear that Anthony and Steven provided you with such excellent service. We look forward to assisting you again in the future!

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Great Job! Great service! Great experience and very Much appreciated! Thank you very much Junior!

Great Job! Great service! Great experience and very Much appreciated! Thank you very much Junior!

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
Dealer response

Thank you, Levi, for the great review. It is our pleasure to hear about your positive experience with Junior and our service team. We appreciate your business and look forward to seeing you again. Until then, drive safely!

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Great experience at this dealership - they went above and beyond to make the deal happen. Even the body shop was awesome repainting our truck cap that transferred to our new truck.

Great experience at this dealership - they went above and beyond to make the deal happen. Even the body shop was awesome repainting our truck cap that transferred to our new truck.

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
Dealer response

Thank you for sharing your experience with us! We're thrilled to hear that our team provided you with such efficient and excellent service. We look forward to assisting you again in the future!

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Eddie is great. Always on top of everything to make sure my truck is good to go

Eddie is great. Always on top of everything to make sure my truck is good to go

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
Dealer response

Thank you, James, for the great review. It is our pleasure to hear about your positive experience with Eddie and our service team. We appreciate your business and look forward to seeing you again. Until then, drive safely!

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Excellent Service , Brian G from Sakes, and Mike in Service are excellent employees. Eddie in service was extremely helpful!!!

Excellent Service , Brian G from Sakes, and Mike in Service are excellent employees. Eddie in service was extremely helpful!!!

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
Dealer response

Thank you so much for writing us such a kind review. We are so happy to hear about your experience with our employees. We look forward to seeing you for future visits!

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Junior did an excellent job having my car serviced timely while I waited for it to be completed. Total time was 1.5 hours which was exactly what he advised me. Great job Junior, “10’s” all around!

Junior did an excellent job having my car serviced timely while I waited for it to be completed. Total time was 1.5 hours which was exactly what he advised me. Great job Junior, “10’s” all around!

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
5.0
  • Does recommend this dealer
  • Came in for service or repair
0 people out of 0 found this review helpful.
Dealer response

Thank you for sharing your experience with us! We're thrilled to hear that Junior provided you with such efficient and excellent service. We look forward to assisting you again in the future!

Consumer response

You’re welcome. I couldn’t be happier about the experience.

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I almost never write reviews, but after my experience on Saturday, April 18th at approximately 11:00 AM, I feel obligated to warn others — specifically about the finance manager at this dealership. I work as a logistics manager on the night shift and also maintain a second job. I work seven days a week, so my time is extremely limited. When I decide to drive from Central New Jersey to Cedar Knolls — on little to no sleep — to look at a vehicle, it's because I'm serious about making a deal. After a lengthy phone conversation, I made the trip to look at a 2026 GMC Terrain Elevation. I wasn't casually browsing — my lease is coming up and I wanted to handle things early and responsibly. To be fair, the salesperson was professional, courteous, and easy to work with. The individual working the preliminary numbers was also respectful and accommodating. I made it very clear upfront that I was overtired, short on patience, and valued efficiency. They seemed to understand. After nearly three hours — far longer than I ever intended to spend — we negotiated toward a deal. I made concessions, including lowering my annual mileage. I also showed my approximate credit score directly from Experian and other apps so there would be no surprises. Everything was transparent. We ultimately landed around $600 per month. Not perfect, but acceptable. I agreed to move forward. Then the finance manager stepped in. After three hours of negotiation and good-faith effort, he sat down and presented a payment in the $800+ range — a massive and completely unexpected jump. No warning. No explanation. No attempt to set expectations. Just a completely different deal after hours of my time. This wasn’t just poor communication — it was disrespectful. Anyone who has purchased or leased vehicles for decades knows exactly how this feels. You invest hours negotiating in good faith, and then at the final step, someone attempts to reset the entire deal. Whether intentional or not, the result is the same: the customer's time is treated as expendable. I immediately grabbed my keys, thanked them for wasting my time, and walked out. What makes this even worse is that I had referred a close friend who is actively shopping for vehicles for both himself and his wife. I had already connected him via conference call with the salesperson while I was there. This could have easily turned into multiple deals. Instead, because of how the finance manager handled this situation, the dealership lost all of that business. Even more surprising — this occurred on a Saturday around 11:00 AM, and the dealership was largely empty. This should have been an easy opportunity to earn a customer and potentially multiple future sales. Instead, the finance manager managed to derail the entire experience in a matter of minutes. My credit score is not Tier 1, but it's far from poor — and I've secured leases in the past with lower credit scores. The sudden jump in payment wasn't just disappointing — it showed a complete lack of awareness for customer experience and professionalism. Let me be very clear: The salesperson did a good job. The numbers representative did a good job. The finance manager single-handedly destroyed the deal. This experience, combined with previous interactions at Performance GMC locations in Cedar Knolls and Woodbridge, has pushed me to seriously reconsider ever purchasing another GM vehicle again. In today's world, customers expect transparency, respect, and professionalism. Spending three hours negotiating, only to be blindsided at the finish line, is not just frustrating — it's unacceptable. I walked in ready to do business. I walked out realizing my time meant nothing. That’s not how you earn customers. And it's definitely not how you keep them.

I almost never write reviews, but after my experience on Saturday, April 18th at approximately 11:00 AM, I feel obligated to warn others — specifically about the finance manager at this dealership. I work as a logistics manager on the night shift and also maintain a second job. I work seven days a week, so my time is extremely limited. When I decide to drive from Central New Jersey to Cedar Knolls — on little to no sleep — to look at a vehicle, it's because I'm serious about making a deal. After a lengthy phone conversation, I made the trip to look at a 2026 GMC Terrain Elevation. I wasn't casually browsing — my lease is coming up and I wanted to handle things early and responsibly. To be fair, the salesperson was professional, courteous, and easy to work with. The individual working the preliminary numbers was also respectful and accommodating. I made it very clear upfront that I was overtired, short on patience, and valued efficiency. They seemed to understand. After nearly three hours — far longer than I ever intended to spend — we negotiated toward a deal. I made concessions, including lowering my annual mileage. I also showed my approximate credit score directly from Experian and other apps so there would be no surprises. Everything was transparent. We ultimately landed around $600 per month. Not perfect, but acceptable. I agreed to move forward. Then the finance manager stepped in. After three hours of negotiation and good-faith effort, he sat down and presented a payment in the $800+ range — a massive and completely unexpected jump. No warning. No explanation. No attempt to set expectations. Just a completely different deal after hours of my time. This wasn’t just poor communication — it was disrespectful. Anyone who has purchased or leased vehicles for decades knows exactly how this feels. You invest hours negotiating in good faith, and then at the final step, someone attempts to reset the entire deal. Whether intentional or not, the result is the same: the customer's time is treated as expendable. I immediately grabbed my keys, thanked them for wasting my time, and walked out. What makes this even worse is that I had referred a close friend who is actively shopping for vehicles for both himself and his wife. I had already connected him via conference call with the salesperson while I was there. This could have easily turned into multiple deals. Instead, because of how the finance manager handled this situation, the dealership lost all of that business. Even more surprising — this occurred on a Saturday around 11:00 AM, and the dealership was largely empty. This should have been an easy opportunity to earn a customer and potentially multiple future sales. Instead, the finance manager managed to derail the entire experience in a matter of minutes. My credit score is not Tier 1, but it's far from poor — and I've secured leases in the past with lower credit scores. The sudden jump in payment wasn't just disappointing — it showed a complete lack of awareness for customer experience and professionalism. Let me be very clear: The salesperson did a good job. The numbers representative did a good job. The finance manager single-handedly destroyed the deal. This experience, combined with previous interactions at Performance GMC locations in Cedar Knolls and Woodbridge, has pushed me to seriously reconsider ever purchasing another GM vehicle again. In today's world, customers expect transparency, respect, and professionalism. Spending three hours negotiating, only to be blindsided at the finish line, is not just frustrating — it's unacceptable. I walked in ready to do business. I walked out realizing my time meant nothing. That’s not how you earn customers. And it's definitely not how you keep them.

Rating breakdown (out of 5):
Customer service
Buying process
Quality of repair
Overall facilities
Overall experience
1.0
  • Does not recommend this dealer
  • Shopped for a new car
0 people out of 0 found this review helpful.
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