2018 Mercedes-Benz GLC 300
Problems, Recalls & Reliability Report
Quick Summary
The 2018 Mercedes-Benz GLC 300 has 123 owner complaints filed with NHTSA — that's 1.5x the segment average of 80. The most common issue is engine problems (22% of all complaints), specifically: tl* the contact owned a 2018 mercedes-benz glc300. while driving 55 mph, the rear driver's side tire was punctured. the contact stated that the vehicle was equipped with 18 inch run flat tires. the contact pulled the vehicle over to the side of the road. after waiting approximately 70 minutes on the. ⚠️ 2 fire reports filed.
123
Total Complaints
0
Recalls Issued
—/5
Safety Stars
1.5x
vs Segment Avg
Known Problems
ENGINE
27 complaints- • TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE
- • 'THE FIRST INCIDENT - OCCURRED IN AUGUST WHEN I STOPPED AT A STOP-LIGHT. I STARTED DRIVING WHEN THE LIGHT TURNED GREEN AND THE CAR WAS ACCELERATING AS NORMAL. THERE WERE CARS BEHIND ME ACCELERATING AS WELL AS NORMAL. MY SUV AUTOMATICALLY SHIFTED FROM DRIVE TO NEUTRAL BY ITSELF AS I CONTINUE TO ACCEL
- • P052E postive crankcase ventilation regulator valve
“TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE”
— NHTSA complaint filing
OTHER
20 complaints- • MY HEEL GOT STUCK WHEN PRESSING THE GAS PEDAL CREATING A SAFETY HAZARD. MY SHOE WAS STUCK AND I HAD TO DRIVE BAREFOOT. I TOOK IT TO THE MERCEDES CALABASAS DEALERSHIP AND THEY SAID THERE WAS NOTHING THEY COULD DO AND I SHOULD NOT WEAR HEELS WHEN DRIVING. I HAVE DRIVEN FOR OVER 30 YEARS WITH NO ISSUES
- • MY WORK HEELS GOT STUCK BETWEEN THE CARPET AND GAS PEDAL CREATING A DRIVING HAZARD. THERE IS A GAP THAT IS DANGEROUS AND AFTER NOTIFYING THE DEALER AND MB, THEY SAID THAT I SHOULD NOT WEAR WORK HEELS. I AM A PROFESSIONAL WOMAN AND WEAR BUSINESS SHOES. THE HEEL GOT STUCK CAUSING ME TO DRIVE WITH NO S
- • WAS DRIVING DOWN HIGHWAY DURING CLEAR SUNNY DAY ON 12/21/18 AT ABOUT 2:30 PM ON I-10 EAST JUST OUTSIDE OF HOUSTON WHEN MY SUNROOF SUDDENLY EXPLODED OUTWARD. NO SIGNS OF ANY DEBRIS BEING FLUNG UP OR STRIKING SUNROOF AND THERE WERE NO VEHICLES CLOSE TO US AT THE TIME.
“MY HEEL GOT STUCK WHEN PRESSING THE GAS PEDAL CREATING A SAFETY HAZARD. MY SHOE WAS STUCK AND I HAD TO DRIVE BAREFOOT. I TOOK IT TO THE MERCEDES CALABASAS DEALERSHIP AND THEY SAID THERE WAS NOTHING THEY COULD DO AND I SHOULD NOT WEAR HEELS WHEN DRIVING. I HAVE DRIVEN FOR OVER 30 YEARS WITH NO ISSUES”
— NHTSA complaint filing
ELECTRICAL
13 complaints- • TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT THE VEHICLE DOORS AUTOMATICALLY LOCKED WITH THE KEYS INSIDE OR OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ALEXANDRIA (200 S PICKETT ST, ALEXANDRIA, VA 22304, (703) 341-2100) FOR DIAGNOSTIC TESTING AND RE
- • 'THE FIRST INCIDENT - OCCURRED IN AUGUST WHEN I STOPPED AT A STOP-LIGHT. I STARTED DRIVING WHEN THE LIGHT TURNED GREEN AND THE CAR WAS ACCELERATING AS NORMAL. THERE WERE CARS BEHIND ME ACCELERATING AS WELL AS NORMAL. MY SUV AUTOMATICALLY SHIFTED FROM DRIVE TO NEUTRAL BY ITSELF AS I CONTINUE TO ACCEL
- • THE STEERING COLUMN STALK CONTROLS DRIVE, REVERSE, NEUTRAL AND PARKING. I STOPPED THE VEHICLE ON AN INCLINE IN A PARKING LOT. I HAD MY FOOT ON THE BRAKE. I SHIFTED INTO NEUTRAL. THE ENGINE WAS STILL RUNNING. I THOUGHT I PUSHED THE PARK BUTTON BUT THE CAR ROLLED BACK INTO ANOTHER VEHICLE.
“TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT THE VEHICLE DOORS AUTOMATICALLY LOCKED WITH THE KEYS INSIDE OR OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ALEXANDRIA (200 S PICKETT ST, ALEXANDRIA, VA 22304, (703) 341-2100) FOR DIAGNOSTIC TESTING AND RE”
— NHTSA complaint filing
BODY/STRUCTURE
10 complaints- • TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE
- • TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 18V177000 (STRUCTURE, SEAT BELTS) MONTHS AGO. THE DEALER (ZT MOTORS OF FORT WALTON BEACH, 1000 N BEAL PKWY NW, FORT WALTON BEACH, FL 32547, (850) 863-2167) STATED THAT PARTS WERE UNAVAIL
- • TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 18V177000 (STRUCTURE, SEAT BELTS) MONTHS AGO. THE DEALER (ZT MOTORS OF FORT WALTON BEACH, 1000 N BEAL PKWY NW, FORT WALTON BEACH, FL 32547, (850) 863-2167) STATED THAT PARTS WERE UNAVAIL
“TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE”
— NHTSA complaint filing
TRANSMISSION
8 complaints- • WHILE SLOWLY ACCELERATING THE TRANSMISSION MADE A LOUD BANG AND THE CAR SLOWED TO A CRAWL IN THE MIDDLE OF AN INTERSECTION NEARLY CAUSING A MAJOR ACCIDENT, STEERING WAS NEARLY GONE AS WELL WITH NO RESPONSE FROM ACCELERATOR. THE VEHICLE DISPLAY ALSO SAID IT LOST COMMUNICATION WITH THE KEY WHICH WAS I
- • THE STEERING COLUMN STALK CONTROLS DRIVE, REVERSE, NEUTRAL AND PARKING. I STOPPED THE VEHICLE ON AN INCLINE IN A PARKING LOT. I HAD MY FOOT ON THE BRAKE. I SHIFTED INTO NEUTRAL. THE ENGINE WAS STILL RUNNING. I THOUGHT I PUSHED THE PARK BUTTON BUT THE CAR ROLLED BACK INTO ANOTHER VEHICLE.
- • ELECTRONIC SHIFTIER ISSUE. CAR WILL NOT DO WHAT IS BEING INPUT TO THE SHIFTIER. PARTICULAR ISSUE WHEN GOING FROM PARK TO DRIVE, DRIVE TO REVERSE, OR PARK TO DRIVER OR REVERSE. (NOTE THAT THE PRESSURE ON BRAKE PEDAL HAS ALWAYS SEEMED EXCESSIVE TO ME. HAVE HAD ISSUE WHERE CAR GOES INTO NEUTRAL WHEN
“WHILE SLOWLY ACCELERATING THE TRANSMISSION MADE A LOUD BANG AND THE CAR SLOWED TO A CRAWL IN THE MIDDLE OF AN INTERSECTION NEARLY CAUSING A MAJOR ACCIDENT, STEERING WAS NEARLY GONE AS WELL WITH NO RESPONSE FROM ACCELERATOR. THE VEHICLE DISPLAY ALSO SAID IT LOST COMMUNICATION WITH THE KEY WHICH WAS I”
— NHTSA complaint filing
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 123 owner complaints for this specific year, here's what to check or ask about:
- ☐ENGINE: TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: MY HEEL GOT STUCK WHEN PRESSING THE GAS PEDAL CREATING A SAFETY HAZARD. MY SHOE WAS STUCK AND I HAD TO DRIVE BAREFOOT. I TOOK IT TO THE MERCEDES CALABASAS DEALERSHIP AND THEY SAID THERE WAS NOTHING THEY COULD DO AND I SHOULD NOT WEAR HEELS WHEN DRIVING. I HAVE DRIVEN FOR OVER 30 YEARS WITH NO ISSUES
Typically appears around 50K miles. Repair cost ~$500
- ☐ELECTRICAL: TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT THE VEHICLE DOORS AUTOMATICALLY LOCKED WITH THE KEYS INSIDE OR OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF ALEXANDRIA (200 S PICKETT ST, ALEXANDRIA, VA 22304, (703) 341-2100) FOR DIAGNOSTIC TESTING AND RE
Typically appears around 50K miles. Repair cost ~$500
- ☐BODY/STRUCTURE: TL* THE CONTACT OWNED A 2018 MERCEDES-BENZ GLC300. WHILE DRIVING 55 MPH, THE REAR DRIVER'S SIDE TIRE WAS PUNCTURED. THE CONTACT STATED THAT THE VEHICLE WAS EQUIPPED WITH 18 INCH RUN FLAT TIRES. THE CONTACT PULLED THE VEHICLE OVER TO THE SIDE OF THE ROAD. AFTER WAITING APPROXIMATELY 70 MINUTES ON THE
Typically appears around 50K miles. Repair cost ~$500
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Mercedes-Benz GLC 300 — Year Comparison
How does 2018 compare to other years? Fewer complaints = more reliable.
NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 123
- Recalls
- 0
- Fire reports
- 2
- Crash reports
- 6
- Injury reports
- 2
- Segment avg
- 80
Check a Specific VIN
See recalls for YOUR 2018 Mercedes-Benz GLC 300