1247 State Route 10
Cedar Knolls, NJ 07927

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Sales: 855-288-6613

Used Cars: 855-288-6613

Hours Toggle

Sales Department

Sun Closed
Mon 9:00am – 8:00pm
Tue 9:00am – 8:00pm
Wed 9:30am – 8:00pm
Thu 9:00am – 8:00pm
Fri 9:00am – 8:00pm
Sat 9:00am – 6:00pm

Service Department

Sun Closed
Mon 7:30am – 5:30pm
Tue 7:30am – 5:30pm
Wed 7:30am – 5:30pm
Thu 7:30am – 5:30pm
Fri 7:30am – 5:30pm
Sat 7:30am – 4:30pm

Reviews of Performance Buick GMC

Overall Rating:

4.7 (out of 5)

95% recommend this dealer

1580 total reviews

Showing the most recent reviews from Cars.com and DealerRater.

1.0 (out of 5)

Terrible communication from service department to me as

Reviewed by IPERSSON1023July 18, 2025

Terrible communication from service department to me as the customer. Will never return for vehicle repairs again.

  • Does not recommend this dealer
  • Came in for service or repair

Overall Experience 1

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

5.0 (out of 5)

John was professional with accurate estimate, excellent

Reviewed by MARINUSJuly 18, 2025

John was professional with accurate estimate, excellent explanation and great service. Easy to schedule an appointment online.

  • Does recommend this dealer
  • Came in for service or repair

Dealer Response

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

Overall Experience 5

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

1.0 (out of 5)

The worst dealership I have ever taken my car to.

Reviewed by INDIAN_CREATIONSJuly 17, 2025

The worst dealership I have ever taken my car to. The diagnosis was terrible and misleading.

  • Does not recommend this dealer
  • Came in for service or repair

Overall Experience 1

Customer Service N/A

Quality of Repair N/A

Friendliness N/A

Pricing N/A

Maximum rating = 5

About Performance Buick GMC

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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