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2019 Mercedes Benz C Class Recalls, Issues & Maintenance

The 2019 Mercedes Benz C Class has no open NHTSA recalls. Owners report 8 recurring issue clusters, led by “Sunroof and convertible top panel 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 2019 Mercedes Benz C Class.

Reported to NHTSA

Sunroof and convertible top panel failure

STRUCTURE

8 NHTSA complaints · 2019-12 → 2026-08

“A panel on the roof of my vehicle fully detached as it was not appropriately secured in place by the manufacturer (Mercedes Benz). The part is not available for inspection as it flew off of my vehicle on the highway, but I have pictures available”
— Owner report, NHTSA ODI #11591410
“2019 Mercedes C300 sunroof exploded while driving 60 mph on highway”
— Owner report, NHTSA ODI #11441801
“THE PANORAMA SUNROOF EXPLODED, NO OTHER CARS NEAR ME, NO ROCK HIT IT NO BIG BUMP IN THE ROAD, IT JUST EXPLODED...WAS TRAVELING AT NORMAL HIGHWAY SPEED, AND IT SOUNDED LIKE THE CAR HAD EXPLODED, VERY SCARY”
— Owner report, NHTSA ODI #11291475

Read all complaints on NHTSA →

Front seat belt failing to retract

SEAT BELTS

6 NHTSA complaints · 2022-02 → 2026-06

“My 2019 Mercedes-Benz C300 Coupe’s front driver seat belt will not fully retract to its stowed position”
— Owner report, NHTSA ODI #11742426
“Front seat belts do not automatically retract”
— Owner report, NHTSA ODI #11667937
“On both front seatbelts. After disconnecting, they both do not retract. Often they get stuck hanging below door after closing the door (both sides)”
— Owner report, NHTSA ODI #11452804

Read all complaints on NHTSA →

Wheel rim cracking or deformation

WHEELS

4 NHTSA complaints · 2022-01 → 2022-12

“I have 2 cracks in my wheels that needed repair. These cracks were 180degrees from each other. No tire damage”
— Owner report, NHTSA ODI #11448698
“The dealership confirmed the tire was fine and there was actually a crack on the inner portion of the wheel that was causing the tire to leak air”
— Owner report, NHTSA ODI #11496477
“I had 2 cracked rims which the insurance company claims that it is a manufacturers defect and not due to hitting holes in the road”
— Owner report, NHTSA ODI #11478570

Read all complaints on NHTSA →

Recall repair parts unavailable or delayed

ELECTRICAL SYSTEM, COMMUNICATION

8 NHTSA complaints · 2019-10 → 2025-11

“The contact owns a 2019 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Number: 21V058000 (Communication, Electrical System)”
— Owner report, NHTSA ODI #11419995
“THE CONTACT OWNS A 2019 MERCEDES BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 21V058000 (COMMUNICATION, ELECTRICAL SYSTEM) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS UNAVAILABLE”
— Owner report, NHTSA ODI #11413391
“The contact owns a 2019 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Number: 22V232000 (Back Over Prevention) however, the part to do the recall repair was not yet available”
— Owner report, NHTSA ODI #11467309

Read all complaints on NHTSA →

Sudden loss of engine power or stalling while driving

ENGINE

22 NHTSA complaints · 2019-04 → 2026-08

“While driving at approximately 65 mph on the I-405 freeway in Irvine, CA during rainy conditions, my 2019 Mercedes-Benz C300 suddenly and completely lost acceleration without warning. At the same moment, a Check Engine Light illuminated on the dash”
— Owner report, NHTSA ODI #11708992
“THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE UNEXPECTEDLY SHUT OFF WITHOUT WARNING”
— Owner report, NHTSA ODI #11296672
“Vehicle shuts off while driving without warning at various speeds. Loss of power steering and power brakes occurs when engine stalls, creating immediate risk of crash, injury or death to occupants and other drivers”
— Owner report, NHTSA ODI #11747712

Read all complaints on NHTSA →

Fuel line leaks and fuel odor near the engine

FUEL SYSTEM, GASOLINE

5 NHTSA complaints · 2024-02 → 2025-04

“The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving 45 MPH, the contact noticed smoke coming from the front passenger's side wheel well”
— Owner report, NHTSA ODI #11574692
“The fuel hose on the right hand side of the vehicle is leaking onto my engine. You can easily see this leak and smell it when unlocking the car in the morning. It is dangerous and could easily result in a fire”
— Owner report, NHTSA ODI #11638548
“Gas smell coming from engine area when car has been sitting overnight. Smell comes from driver's side of engine compartment”
— Owner report, NHTSA ODI #11611601

Read all complaints on NHTSA →

Steering rack failure or lock-up

STEERING

4 NHTSA complaints · 2020-09 → 2023-12

“The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving approximately 40 MPH and making a left turn, the steering made an abnormal sound”
— Owner report, NHTSA ODI #11531402
“The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving normally one day, the vehicle randomly lost power steering”
— Owner report, NHTSA ODI #11541866
“THE CONTACT STATED THAT WHENEVER THE STEERING WHEEL WAS TURNED LEFT OR RIGHT, THERE WAS A GRINDING SOUND COMING FROM THE STEERING WHEEL”
— Owner report, NHTSA ODI #11360247

Read all complaints on NHTSA →

Automatic braking system false activation or malfunction

SERVICE BRAKES, FORWARD COLLISION AVOIDANCE

4 NHTSA complaints · 2019-08 → 2022-01

“WHILE DRIVING VARIOUS SPEEDS, THE ACTIVE BRAKE ASSIST ENGAGED WITHOUT WARNING. THE FAILURE WAS EXPERIENCED SEVERAL TIMES WHILE DRIVING”
— Owner report, NHTSA ODI #11242687
“THE CONSUMER STATED THE AUTOMATIC BRAKE SENSOR WAS BEING TRIGGERED WITHOUT REASON. THE CONSUMER REQUESTED TO BE REIMBURSED FOR THE VEHICLE”
— Owner report, NHTSA ODI #11297630
“AUTOMATIC EMERGENCY BRAKING ENGAGES UNNECESSARILY WHEN DRIVING UNDER CHICAGO'S ELEVATED TRAIN TRACKS AND SIMILAR OVERHEAD STRUCTURES”
— Owner report, NHTSA ODI #11413660

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 17, 2026. Investigation data refreshed Sep 17, 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)

8 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.

3

complaints mentioning a crash

0

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 2019 Mercedes Benz C 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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