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2017 Mercedes Benz Glc Class Recalls, Issues & Maintenance

The 2017 Mercedes Benz Glc Class has no open NHTSA recalls. Owners report 8 recurring issue clusters, led by “Positive crankcase ventilation valve failure.” Mercedes-Benz alternates two service events: Service A (oil, filter, inspection) at roughly 10,000 miles or 1 year, then Service B (Service A plus brake fluid, cabin filter, and deeper checks) at roughly 20,000 miles or 2 years — the ASSYST Plus counter in the cluster tells you which is due. Oil must carry the MB-Approval number your engine specifies (commonly 229.5, or 229.71 for newer 0W-20 engines); 'meets or exceeds' marketing language is not an approval. Electric EQB and EQS models keep the A/B rhythm for inspections, brake fluid, and cabin filters — just without oil.

No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2017 Mercedes Benz Glc Class.

Reported to NHTSA

Positive crankcase ventilation valve failure

ENGINE

29 NHTSA complaints · 2021-02 → 2025-04

“Getting error code P052e which has been a very common issue with these engines on Mercedes models. It does not affect driving but since it’s out of warranty, it will cost over $3,000 to repair”
— Owner report, NHTSA ODI #11473640
“There are lots of 2017 GLC 300 that has been having issues with PCV system that are malfunctioning that could cause engine failure. Customers are forced to spend $2000 plus to have this fixed rather than Mercedes owning its problem and fixing it”
— Owner report, NHTSA ODI #11519210
“1. CRANKCASE VENTILATION VALVE PERFORMANCE FAILED CHECK ENGINE LIGHT IS ON WHILE DRIVING 2. SMELLS GAS FROM UNDER THE HOOD. HEARD IT'S COMMON PROBLEMS”
— Owner report, NHTSA ODI #11397811

Read all complaints on NHTSA →

Panoramic sunroof glass failure

VISIBILITY

11 NHTSA complaints · 2017-02 → 2025-11

“EXPLODING PANORAMIC SUNROOF: WHILE DRIVING ABOUT 40MPH ON ROUTE 35SOUTH (MIDDLETOWN, NJ) IN 30 DEGREE WEATHER AT 7:30PM ON 5FEB2018 THE FORWARD PANEL OF THE PANORAMIC SUNROOF EXPLODED. THERE WERE NO OTHER CARS AROUND ME. IT WAS A LOUD POP EXPLOSION”
— Owner report, NHTSA ODI #11067206
“WE WERE DRIVING DOWN THE FREEWAY, TRAVELING APPROXIMATELY 65 MPH IN OAKLAND, CA. THE WEATHER WAS CLEAR - NO RAIN AND APPROXIMATELY 60 DEGREES. ALL OF A SUDDEN, THERE WAS A LOUD NOISE LIKE A GUNSHOT AND OUR PANARAMIC SUNROOF SHATTERED”
— Owner report, NHTSA ODI #10949946
“THE PANORAMIC SUNROOF EXPLODED OUTWARD. I WAS DRIVING AT HIGHWAY SPEED. THIS IS THE SECOND TIME THAT THIS HAS HAPPENED ON THIS VEHICLE”
— Owner report, NHTSA ODI #11328810

Read all complaints on NHTSA →

Engine cooling recall parts unavailable

ELECTRICAL SYSTEM, ENGINE

5 NHTSA complaints · 2017-06 → 2017-08

“TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE”
— Owner report, NHTSA ODI #11016497
“TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR”
— Owner report, NHTSA ODI #11005345
“TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS UNABLE TO PROVIDE A SPECIFIC TIME FRAME FOR THE PARTS TO ARRIVE”
— Owner report, NHTSA ODI #11000195

Read all complaints on NHTSA →

Service brake squeal

SERVICE BRAKES

4 NHTSA complaints · 2016-12 → 2019-01

“REFER TO 2016 GLC-300 COMPLAINTS ABOUT SCREECHING SERVICE BRAKES AND COPY/PASTE COMPLAINTS HERE. 2017 MODEL HAS THE SAME SCREECHING NOISES AND CAR WAS PURCHASED IN AUGUST 2016”
— Owner report, NHTSA ODI #10938545
“BOUGHT CAR 3 DAYS AGO AND BRAKES SQUEAL UPON BACKING OUT OF GARAGE AND SOMETIMES APPLYING WHEN STOPPING! SPECIFICALLY ASKED SALESMAN IF MERCEDES HAD PROBLEMS WITH BRAKES MAKING NOISE AS WE WENT THROUGH THIS WITH A VW TOUREG AND WAS TOLD NO THEY DO NOT HAVE THIS PROBLEM”
— Owner report, NHTSA ODI #11163133
“I PURCHASED A MERCEDES GLC 300 2017 IN SEPTEMBER IN DELRAY BEACH AND WHEN I APPROACHED 3500 BREAKS STARTED TO SQUEAL. I TOOK THE CAR IN AND THEY SAID THEY WOULD ORDER NEW BREAKS”
— Owner report, NHTSA ODI #10958319

Read all complaints on NHTSA →

Fuel line leak and fuel odor

FUEL/PROPULSION SYSTEM

8 NHTSA complaints · 2020-01 → 2026-02

“Strong gasoline smell coming from the engine bay every morning at start up. I removed protective plastic lining from the under carriage to identify the issue. I identified a lot of gasoline dripping from the top portion of the engine compartment”
— Owner report, NHTSA ODI #11631359
“The fuel line leaks directly under the driver seat. Filling the cabin with fuel vapors. Mercedes has an extended warranty for this problem but only on vehicles from 2004 to 2009”
— Owner report, NHTSA ODI #11454122
“FEED LINE TO HIGH PRESSURE FUEL PUMP LEAKING TO ENGINE COMPARTMENT CAUSING ODOR WHEN STARTING IN COLD WEATHER (VEHICLE STATIONARY). HAS BEEN HAPPENING FOR A LONG TIME BUT SIMPLY DID NOT CONNECT THE DOTS”
— Owner report, NHTSA ODI #11298138

Read all complaints on NHTSA →

Unexpected loss of drive or neutral shift

POWER TRAIN

7 NHTSA complaints · 2017-02 → 2025-08

“My vehicle goes into neutral while driving which poses a major risk”
— Owner report, NHTSA ODI #11669974
“The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while at a stop light, the vehicle independently shifted to neutral(N) for approximately 5 minutes. The vehicle failed to release from neutral when the driver shifted the gear shifter”
— Owner report, NHTSA ODI #11595449
“One morning I was driving the GLC-300 about 45 mph, when suddenly the car went from 45mph to 0 in 3 seconds. The car stopped and it would not move forward. The car was towed to the Mercedes Benz dealership and it was discovered that front differential was broken”
— Owner report, NHTSA ODI #11515975

Read all complaints on NHTSA →

Airbag and seat belt system malfunction

SEAT BELTS, AIR BAGS

18 NHTSA complaints · 2017-01 → 2026-02

“Vehicle has previous recalls done and still has the same issues with recall. Srs code no air bag will deploy. Dealer ship refused to service vehicle due to miscommunication and I'm driving a defective vehicle without an airbag”
— Owner report, NHTSA ODI #11666296
“I HAD AN ACCIDENT AND REARENDEAD ANOTHER CA. HOWEVER MY AIRBAGS DIDN'T DEPLOYED”
— Owner report, NHTSA ODI #11360138
“The seat belt latch in the second seating row, the outboard seatbelt latch plate retracted into the area between the c-pillar paneling and the rear side paneling. The rear occupant was not be able to fasten the seat belt latch”
— Owner report, NHTSA ODI #11557169

Read all complaints on NHTSA →

Engine failure requiring replacement

ENGINE

7 NHTSA complaints · 2021-05 → 2023-04

“Catastrophic engine failure at 63,000 miles. Mechanic says its a known issue with this particular make and model of that year. Dealer says I need to replace the engine”
— Owner report, NHTSA ODI #11483487
“Was driving on the freeway car started to shake. Speed dropped from 73 to 40 I was thankfully able to merge off the freeway. I stoped to see if there was any visible damage. Everything look normal”
— Owner report, NHTSA ODI #11467011
“The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving approximately 55 MPH, she detected white smoke coming from the tailpipes. There were no warning lights illuminated. The contact was able to pull over”
— Owner report, NHTSA ODI #11490203

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 13, 2026. Investigation data refreshed Sep 13, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Service A — Oil & Filter + Inspection

Every 10,000 mi

Every 10,000 miles or 12 months: oil and filter with MB-Approved oil, fluid top-offs, tire check, and inspection. AMG models driven hard: many owners service at 5,000-7,500 miles.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Service B — Major Inspection

Every 20,000 mi

Every 20,000 miles or 2 years, alternating with Service A: everything in A plus brake-fluid replacement, cabin filter, and a deeper multi-point inspection of brakes, suspension, and driveline.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free with any paid service. A flashlight and 10 minutes covers the basics yourself.

Tire Rotation

Every 10,000 mi

Rotate at every Service A where the tire sizes allow. Many AMG and 4MATIC+ models run staggered widths that can't rotate front-to-rear — check your spec before paying for a rotation.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 10,000 mi

Checked at every A/B service via electronic pad-wear sensors. Replace sensors with pads. Heavy EQS models wear pads slowly (regen braking) but rotors can corrode from disuse — an inspection catches that.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid

Every 20,000 mi

Replaced every 2 years as part of Service B — Mercedes schedules it on time, not miles, because DOT 4 fluid absorbs moisture regardless of driving.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Automatic Transmission Fluid (7G / 9G-Tronic)

Every 70,000 mi

Mercedes specifies fluid and filter service around 70,000 miles on most 7G- and 9G-Tronic gearboxes — check your year's sheet. Use only the MB-spec fluid for your transmission code; independent specialists often service at 60,000 on hard-driven cars.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

Spark Plugs

Every 60,000 mi

Most modern MB gas engines: plugs around 60,000 miles — AMG engines often sooner. Check your engine's sheet; twin-turbo V8 plug jobs are labor-heavy, so pair with other scheduled work.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Engine Air Filter

Every 40,000 mi

Replace around every 40,000 miles (twin-filter setups on V6/V8 engines double the parts bill). Inspected at every Service B.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Combination / Dust Filter

Every 20,000 mi

Replaced with every Service B. Models with the ENERGIZING air package use a higher-grade filter — priced accordingly.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Engine Coolant

On condition / lifetime

MB-spec coolant is long-life (typically ~10 years / 150,000 miles on the sheet). Refresh only with MB 325/326-spec coolant — the wrong chemistry attacks aluminum and head gaskets.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

12V & Auxiliary Battery

Every 25,000 mi

Test annually after year 3. Most modern Mercedes carry a second auxiliary battery; a weak one triggers cascading warning messages long before a no-start. EQ models also depend on the 12V system to boot.

Estimated cost — typical U.S. ranges

Dealer

~$225–$390

Shop

~$160–$280

DIY

~$130–$250

Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

15 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

5

complaints mentioning a crash

3

complaints mentioning a fire

Reviewed known issues for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2017 Mercedes Benz Glc Class reflects Mercedes-Benz's published service intervals and the ASSYST Plus (Service A / Service B) system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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