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Performance Buick GMC
Cedar Knolls, NJ
1,856 Reviews
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!
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This rating includes all dealership reviews, with more weight given to recent reviews.
Sales Price Transparency
Service Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Workmanship
Service Time
Service Communication
Hours
Sales/Showroom
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
Service
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
Parts
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
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Showing 1,856 reviews
February 13, 2026
John's performance was exceptional, as he ensured the vehicle was returned in optimal condition. vehicle was returned in optimal condition. More
by edla07111
Verified CustomerEmployees Worked With
February 09, 2026
It was great buying experience. The last truck I bought was 30 years ago and this was a pleasure to buy. Kyle Bennett was the best! He truly made this a wonderful experience. I li The last truck I bought was 30 years ago and this was a pleasure to buy. Kyle Bennett was the best! He truly made this a wonderful experience. I live in Arizona and this was such a smooth transaction. Even tho I made this purchase from across the country the customer service was top notch. I highly recommend this dealer ship and Kyle going above and beyond. You don’t see this kind of professionalism and customer service much these days. Thanks again! More
by cjn6969
Employees Worked With
Kyle Bennett
February 08, 2026
Wilberto was a pleasure to deal with. Very knowledgeable on the product and down to earth. The performance autogroup has very professional staff and will be returning for my next vehicle. Very knowledgeable on the product and down to earth. The performance autogroup has very professional staff and will be returning for my next vehicle. I’m exciting to start driving the Sierra EV Denali. Thanks again Will. More
by Clos418
Employees Worked With
February 07, 2026
Dropped the vehicle off around 1230 with an appointment made ahead for free oil change and filter. Thank you for that courtesy as it is part of the customer experience you provide when you purchase a car a made ahead for free oil change and filter. Thank you for that courtesy as it is part of the customer experience you provide when you purchase a car at your dealership. Never had an issue. Think just some confusion but when I came to pick up the vehicle at 430 it was not ready and probably not even started on the service as I then had to wait, as if I was just dropping the car off at 430, for about another hour: Service performed was good as usual but wanted to give feedback as requested. Next time I’ll just say I’m waiting for the car even if I drop it off to ensure it gets prioritized when drop off and work started based on appointment time to ensure ready when I return. Thanks again for the courtesy oil changes. Although inconvenient the service agent was professional and apologetic for the additional wait. More
by JOSEPHCAMPOS0
Employees Worked With
February 07, 2026
Great service and didn’t try to upsell services. Also included a wash. Will return Also included a wash. Will return More
by jjhellyer
Employees Worked With
February 04, 2026
Got the part in one day and was able to fix the issue promptly. Great customer service. Got calls and texts to inform me of status and pick up time. promptly. Great customer service. Got calls and texts to inform me of status and pick up time. More
by kfischer10
Employees Worked With
John service advisor cedar knolls
