MotorDeets

2018 Mercedes-Benz Amg C43: Recalls, Problems & MPG

Here are the deets on the 2018 Mercedes-Benz Amg C43: 11 recalls, 13 owner complaints and up to 22 mpg combined.

11vehicle recalls
13owner complaints
0mention a crash
22best combined mpg
2018 Mercedes-Benz Amg C43
Photo: Navigator84 · CC BY-SA 4.0 · Wikimedia Commons. Representative photo of this generation; trim may differ.

Recalls

11 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.

Airbags Vehicle recall #17V627000 · 2017 · 495,290 vehicles

What's wrong: Mercedes-benz USA, LLC. (mbusa) is recalling these vehicles: 2014-2018 cla250, cla250 4matic, cla45 amg 4matic, 2015-2018 gla250, gla250 4matic, gla45 amg 4matic, c300 4matic, c63s amg, 2012-2014 c250, c350, c300 4matic, e550 4matic, 2013-2014 c63 amg, 2012-2015 c250 coupe, c350 coupe, c63 amg coupe, 2013-2015 c350 4matic coupe, glk250 4matic bluetec, glk350, glk350 4matic, 2016-2017 c350e, c43 amg, 2015 c400…

Why it matters: If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.

The fix: Mbusa will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017.

Seats Vehicle recall #18V150000 · 2018 · 99 vehicles

What's wrong: Mercedes-benz USA, LLC. (mbusa) is recalling certain 2018 mercedes benz c43 amg, c63s amg, e63 s amg sedan, and e63s amg stationwagon vehicles fitted with amg performance seats. The backrest rail and backrest fitting May not be properly welded on the driver and front passenger seats.

Why it matters: The incorrect welding May result in the seats failing in the event of a crash, increasing the risk of injury.

The fix: Mbusa will notify owners, and dealers will inspect the welds of the backrest frames, replacing the backrests as necessary, free of charge. The recall is expected to begin May 4, 2018.

Seats Vehicle recall #18V207000 · 2018 · 3,088 vehicles

What's wrong: The seatbacks of the front seats May not properly lock on the right side of the seat.

Why it matters: If the seatback does not properly lock, in the event of a crash, the seatbacks May fold forward, increasing the risk of injury.

The fix: Mbusa will notify owners, and dealers will inspect the locking of the seatbacks, replacing the seatbacks lock, as necessary, free of charge. The recall is expected to begin May 25, 2018.

Body & structure Vehicle recall #18V456000 · 2018 · 10,826 vehicles

What's wrong: Due to a bonding issue introduced in the production process, the rear beltline trim May separate from the vehicle.

Why it matters: If the beltline trim were to separate from the vehicle while driving, it could become a road hazard, increasing the risk of a crash.

The fix: Mbusa will notify owners, and dealers will inspect the rear beltline trim and replace the trim if necessary, free of charge. The recall began on September 21, 2018.

Airbags Vehicle recall #18V838000 · 2018 · 104,663 vehicles

What's wrong: The status of the passenger side air bag May not display correctly.

Why it matters: If the passenger air bag is incorrectly displayed as 'on' when it is not, a front seat passenger May be unaware that the air bag will not deploy in the event of a crash, increasing their risk of injury.

The fix: Mbusa will notify owners, and dealers will update the audio head unit software, free of charge. The recall began January 3, 2019.

Seats Vehicle recall #19V130000 · 2019 · 22,637 vehicles

What's wrong: The seatbacks of the front seats May not properly lock on the right side of the seat.

Why it matters: If the seatback does not properly lock, in the event of a crash, the seatbacks May fold forward, increasing the risk of injury.

The fix: Mercedes will notify owners, and dealers will inspect the locking of the seatback on the affected vehicles and replace the seatback lock, as necessary, free of charge. An interim owner letter was mailed on April 12, 2019 to notify owners. Owners will receive a second notification when the remedy is…

Electrical Vehicle recall #19V586000 · 2019 · 26,584 vehicles

What's wrong: Mercedes-benz USA, LLC. (mbusa) is recalling certain 2018-2019 c300, c300 4matic, and c43 amg 4matic vehicles. The mounting bracket for the 12-volt battery May not be secured. This May allow the battery to shift, possibly disconnecting the terminals in the event of a crash.

Why it matters: Loss of power from the battery can impair post-crash functions, such as communicating with emergency services and activating hazard lights. The battery May also detach and become a road hazard. Either of these scenarios can increase the risk of injury.

The fix: Mbusa will notify owners, and dealers will replace the battery mounting bracket, free of charge. The recall began October 18, 2019.

Seat belts Vehicle recall #21V032000 · 2021 · 24,550 vehicles

What's wrong: The front seat belts might not fully retract to their stowed position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (fmvss) number 208, "occupant crash protection."

Why it matters: If the seat belt does not fully retract, the occupant May find the operation of the seat belt inconvenient and not wear it, increasing the risk of injury in the event of a crash.

The fix: Mbusa will notify owners, and dealers will check the retraction function of the front seat belts and adjust the damping foam within the b-pillars, as necessary, free of charge. The recall began February 26, 2021.

Communication, Electrical Vehicle recall #21V058000 · 2021 · 1,292,258 vehicles

What's wrong: Please refer to the part 573 report for specific vehicle model details. The software design of the communication module May fail to communicate the correct vehicle location for the emergency call system (ecall) in the event of a crash.

Why it matters: Failure of the ecall system May result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.

The fix: Mbusa will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (ota) update, free of charge. The recall began March 12, 2021.

Body & structure Vehicle recall #21V197000 · 2021 · 15,096 vehicles

What's wrong: The front roof panel located between the windshield and the panoramic sunroof May not have been bonded correctly to the vehicle during a prior repair.

Why it matters: The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.

The fix: Mercedes-benz dealer will remove the bonded panel and will install a new front panel by following the detailed repair instructions and using the approved primer, cleaner and adhesive, free of charge. Owner notification letters were mailed on September 3, 2021 and October 26, 2021.

Body & structure Vehicle recall #23V854000 · 2023 · 2,976 vehicles

What's wrong: Please refer to mbusa's recall report for specific vehicle details. The front roof panel located between the windshield and the panoramic sunroof May not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle.

Why it matters: A detached roof panel can become a road hazard, increasing the risk of a crash.

The fix: Dealers will replace the front panel, free of charge. Owner notification letters were mailed on August 2, 2024. Owner notification letters will be mailed in phases, on, March 22,2024, and August 2, 2024.

Most-reported problems

Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 0 injuries and 0 deaths were reported.

Wheels4
Other / unknown4
Transmission & drivetrain2
Tires2
Engine1
Electrical1
Communication1
Seat belts1

What owners describe

The 2018 Mercedes-Benz Amg C43 has 13 owner complaints, ranking #2 of 9 Amg C43 model years for complaints (1.9× the average Amg C43 year). Complaints peaked in 2019 (4 filed that year). The typical problem showed up when the car was about 3 years old, at a median of 7,950 miles. Neighboring years: 2017 (23 complaints, 10 recalls), 2019 (7 complaints, 12 recalls).

Engines & fuel economy (EPA)

EngineTransmissionDriveCityHwyComb.Fuel
3.0 L 6-cyl turboAutomatic 9-spd4-Wheel Drive202722Premium
3.0 L 6-cyl turboAutomatic 9-spd4-Wheel Drive192622Premium

Want the full repair deets? Get the factory manual.

Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 Mercedes-Benz Amg C43.

eManualOnline Download (PDF), keep forever

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Pro-shop repair procedures, wiring diagrams and TSBs for your exact car.

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ALLDATAdiy Online access, factory OEM info

OEM procedures, specs and recall/TSB info, the same source many shops use.

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Haynes Print book or AllAccess online

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FAQ

Does the 2018 Mercedes-Benz Amg C43 have any recalls?

Yes. NHTSA lists 11 vehicle recalls for the 2018 Mercedes-Benz Amg C43. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.

What are the most common 2018 Mercedes-Benz Amg C43 problems?

Owners have filed 13 complaints with NHTSA. The most-reported areas are wheels (4), other / unknown (4), transmission & drivetrain (2).

What gas mileage does the 2018 Mercedes-Benz Amg C43 get?

EPA ratings run up to 22 mpg combined (3.0 L, Automatic 9-spd), across 2 engine and transmission combos.

Where can I get a 2018 Mercedes-Benz Amg C43 repair manual?

eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.

Other Amg C43 years

201620172018201920202021202220232024