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CarMonitor

Transport Canada + NRCan

2018 Mercedes Benz C 300

Everything Canada’s open data holds on this vehicle: what has been recalled, what it costs to run, and how efficient it is compared with everything else on the road.

Recalls

18

17 current

Combined

9.3L/100 km

Fuel, a year

$2,883

20,000 km, Ontario prices

Recalls

Good news: Recall repairs cost you nothing. Book with any manufacturer dealer and quote the recall number — no time limit, however many owners the vehicle has had.

Structure

Transport Canada recall 2023673 · manufacturer campaign 7790004

15 December 2023

Transport Canada lists: C 2014–2020 · Cla 2014–2020 · Gla 2014–2020 · GLC 2014–2020

What is wrong

On certain vehicles, the plastic panel located between the windshield and the panoramic sunroof may not have been attached correctly during a prior service repair. Over time, the panel could loosen and separate from the vehicle. Note: This is an expansion of Transport Canada recall 2021-170.

Why it matters

A panel that detaches from a moving vehicle could create a road hazard for others and increase the risk of a crash.

What the dealer will do

Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the front roof panel.

110 vehicles affected in CanadaCarSafety Mfr

Structure

Transport Canada recall 2021170 · manufacturer campaign 7790003

22 March 2021

Transport Canada lists: C 2014–2020 · Cla 2014–2020 · Gla 2014–2020 · GLC 2014–2020 · and 1 more

What is wrong

On certain vehicles, the plastic panel located between the windshield and the panoramic sunroof may not have been attached correctly during a prior service repair. Over time, the panel could loosen and separate from the vehicle.

Why it matters

A panel that detaches from a moving vehicle could create a road hazard for others and increase the risk of a crash.

What the dealer will do

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to replace the front roof panel.

229 vehicles affected in CanadaCarSafety Mfr

Seats And Restraints

Transport Canada recall 2021045 · manufacturer campaign 9190309

3 February 2021

Transport Canada lists: C 2017–2020

What is wrong

On certain C-Class cabriolet models equipped with the PRE-SAFE system, the front seat belts may not retract completely to their storage position. Canadian regulations require seat belts to retract fully when not in use.

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. This could increase the risk of injury in a crash.

What the dealer will do

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the function of the front seat belt retractors and adjust the dampening foam, if necessary.

3,038 vehicles affected in CanadaCarCompliance Mfr

Accessories

Transport Canada recall 2021041 · manufacturer campaign 5499615

1 February 2021

Transport Canada lists: B 2018–2021 · C 2018–2021 · Cla 2018–2021 · Class 2018–2021 · and 9 more

What is wrong

On certain vehicles, a software problem could cause the rearview camera image not to appear on the central display. Canadian regulations require the rearview image to display when the transmission is shifted into reverse gear.

Why it matters

A rearview camera image that does not display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash.

What the dealer will do

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to update the head unit software.

41,731 vehicles affected in CanadaSUVSafety Mfr

Seats And Restraints

Transport Canada recall 2019554 · manufacturer campaign 9190308

6 November 2019

Transport Canada lists: C 2018–2019 · CLS 2018–2019 · E 2018–2019 · G 2018–2019 · and 1 more

What is wrong

On certain vehicles, there may be a problem with the front seat belt buckles. This could cause the seat belt warnings to turn on, even if the front seat belts are buckled. If the driver ignores these warnings, the PRE-SAFE and airbag systems may not function properly.

Why it matters

A seat belt pretensioner or airbag system that does not work properly in a crash could increase the risk of injury.

What the dealer will do

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to check the front seat belt buckles and replace them if necessary.

3,569 vehicles affected in CanadaSUVSafety Mfr

Electrical

Transport Canada recall 2019398 · manufacturer campaign 5490029

12 August 2019

Transport Canada lists: C 2018–2019

What is wrong

On certain vehicles, the 12-volt starter battery may not be properly secured by its mounting bracket. In a crash, the battery may shift and the terminals might disconnect. This could interrupt power to the vehicle, which would affect multiple post-crash systems. It is also possible that the battery could detach from the vehicle. Note: A loose battery could cause rattling or knocking noises from the engine compartment while driving.

Why it matters

A failure of the post-crash systems could increase the risk of injury. A battery that detaches from the vehicle could create a road hazard for others and increase the risk of a crash.

What the dealer will do

Mercedes-Benz will notify owners by mail and instruct them to take their vehicle to a dealer to replace the battery mounting bracket.

1,818 vehicles affected in CanadaCarSafety Mfr

Seats And Restraints

Transport Canada recall 2019091

26 February 2019

Transport Canada lists: C 2017–2018 · E 2017–2018

What is wrong

On certain coupe and cabriolet models, the front seatbacks may not fully lock on the right side. In a crash, a seatback that is not properly locked could allow unsecured objects from the rear seats to move forward.

Why it matters

A seatback that is not properly locked could increase the risk of injury in a crash.

What the dealer will do

The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to inspect front seatbacks and replace them as necessary. Note: This is an expansion of Recall 2018-161.

3,713 vehicles affected in CanadaCarSafety Mfr

Steering

Transport Canada recall 2018685

6 December 2018

Transport Canada lists: C 2018 · E 2018

What is wrong

On certain vehicles, the locking status of the steering coupling may not have been verified during assembly. If not correctly locked, the mechanical connection between the steering wheel and steering rack could loosen while driving, potentially resulting in complete loss of steering, increasing the risk of a crash causing injury and/or damage to property.

What the dealer will do

Dealers will inspect the steering coupling and lock it, if necessary.

2 vehicles affected in CanadaCarSafety Mfr

Steering

Transport Canada recall 2018657

28 November 2018

Transport Canada lists: C 2018

What is wrong

On certain C 63 models, a locknut in the steering rack may be defective. If the nut fails, the steering could become stuck, which would increase the risk of a crash causing injury and/or damage to property.

What the dealer will do

Dealers will replace the steering rack.

57 vehicles affected in CanadaCarSafety Mfr

Airbag

Transport Canada recall 2018656

28 November 2018

Transport Canada lists: C 2018–2019 · GLC 2018–2019

What is wrong

On certain vehicles equipped with an Audio 20 head unit and automatic child seat recognition, the status of the passenger airbag may not be displayed correctly. For example, the display may indicate that an airbag is turned off when it is not. This could create a situation where a child or small-statured occupant is inadvertently placed in front of an active airbag. This could increase the risk of injury in a crash.

What the dealer will do

Dealers will update the audio head unit software.

529 vehicles affected in CanadaCarSafety Mfr

Seats And Restraints

Transport Canada recall 2018655

28 November 2018

Transport Canada lists: C 2018

What is wrong

On certain coupe and cabriolet models, the switches that detect if a seat belt is buckled may not function properly. This could cause a buckled seat belt to be incorrectly detected as unbuckled. In the event of a crash, this could cause the seat belt tensioning system not to work as designed, increasing the risk of injury.

What the dealer will do

Dealers will replace the affected seat belt buckles.

377 vehicles affected in CanadaCarSafety Mfr

Structure

Transport Canada recall 2018564

15 October 2018

Transport Canada lists: C 2018 · E 2018

What is wrong

On certain vehicles, an incorrect cover for the starter battery may have been installed and may not fully cover the battery (positive) electrical cable. In the event of a crash, components could come in to contact with the cable, creating a short circuit, and increasing the risk of a fire causing injury and/or damage to property. Additionally, if on-board electrical system voltage is lost, post-crash functions (e.g. emergency door unlocking, activation of hazard warning lamps after crash) might not be available. However, the unlocking and opening of the doors from inside the vehicle would not be affected.

What the dealer will do

Dealers will install a new battery cover with the correct dimensions to cover the electrical cable.

363 vehicles affected in CanadaCarSafety Mfr

Visual System

Transport Canada recall 2018488

11 September 2018

Transport Canada lists: C 2018

What is wrong

On certain vehicles, the rear window may not have been properly bonded and could separate from the vehicle. This could create a road hazard and pose a risk to other road users, increasing the risk of crash causing injury and/or damage to property.

What the dealer will do

Dealers will remove and re-install the rear window.

188 vehicles affected in CanadaCarSafety Mfr

Structure

Transport Canada recall 2018370

9 July 2018

Transport Canada lists: C 2018 · E 2018

What is wrong

Certain vehicles equipped with a 6-cylinder gasoline engine and all-wheel drive may have been built with incorrect paneling under the engine compartment. This could result in contact between the exhaust system and the plastic paneling, which could create a risk of fire causing injury and/or damage to property.

What the dealer will do

Dealers will check the underbody paneling and replace it, if necessary.

10 vehicles affected in CanadaCarSafety Mfr

Structure

Transport Canada recall 2018368

9 July 2018

Transport Canada lists: C 2017–2018

What is wrong

On certain cabriolet models, the rear beltline body trim could separate from the vehicle. If this occurs while the vehicle is in motion, it could create a potential road hazard that could increase the risk of injury for other road users or bystanders.

What the dealer will do

Dealers will check the rear beltline trim and replace it, if necessary.

1,239 vehicles affected in CanadaCarSafety Mfr

Seats And Restraints

Transport Canada recall 2018113

7 March 2018

Transport Canada lists: C 2018 · E 2018

What is wrong

On certain vehicles equipped with AMG Performance Seats, the welding between the backrest rail and the backrest metal fitting of the driver and/or passenger seat might not meet specifications. The metal fitting may disengage from the backrest rail, which could increase the risk of injury to front seat occupants in the event of a crash.

What the dealer will do

Dealers will inspect the backrest frames of the front seats, and replace them as necessary. Note: This recall affects C43 AMG, C63 and E63 AMG models only.

7 vehicles affected in CanadaCarSafety Mfr

Airbag

Transport Canada recall 2017490

10 October 2017

Transport Canada lists: B 2012–2018 · C 2012–2018 · Cla 2012–2018 · E 2012–2018 · and 3 more

What is wrong

On certain vehicles, electrostatic discharge, when combined with a broken clock spring and insufficient grounding of the steering components, could lead to an inadvertent deployment of the driver's frontal airbag. Unintended airbag deployment, in a non-warranted (non-impact) situation, could startle the driver, which could result in a crash causing injury and/or property damage. In some instances, inadvertent deployment could cause minor injuries to vehicle occupants.

What the dealer will do

Dealers will add sufficient grounding to the steering components. Note: A broken clock spring would result in a driver airbag warning message appearing in the instrument cluster, as well as a red airbag warning lamp illuminating.

76,728 vehicles affected in CanadaCarSafety TC
1 replaced by later campaigns

Seats And Restraints

Transport Canada recall 2018161

4 April 2018

Replaced: This recall has been replaced by a later campaign. Check the newer one — the repair may have changed.

Transport Canada lists: C 2017–2018 · E 2017–2018

What is wrong

On certain vehicles, the seatbacks of the front seats may not fully lock on the right-hand side of the respective seat. If the seatback is improperly locked, in the event of a crash, unsecured objects in the rear seats might not be held back and the risk of injury to the front occupants would be increased.

What the dealer will do

Dealers will inspect the locking of the front seatbacks, and replace the seatbacks as necessary. Note: This recall is superseded by recall 2019091. Please see <a href="http://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/detail.aspx?lang=eng&&rn=2019091">recall 2019091</a> for more information.

710 vehicles affected in CanadaCarSuperseded

Efficiency and running cost

Class
Subcompact
In its class
More efficient than 67% of 101 2018 vehicles in this class
Tailpipe CO₂
218 g/km

Set your own distance and pump price · Full efficiency ranking

Watch this vehicle

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Common questions

Does the 2018 Mercedes Benz C 300 have any recalls?
Transport Canada has 18 recalls on record for the 2018 Mercedes Benz C 300, of which 17 are current and 1 has been replaced by later campaigns. Recall repairs are free at any manufacturer dealer.
What fuel economy does the 2018 Mercedes Benz C 300 get?
NRCan rates the 2018 Mercedes Benz C 300 at 9.3 L/100 km combined, emitting 218 g of CO2 per kilometre. There are 4 rated versions; this is the median.
What does it cost to run a 2018 Mercedes Benz C 300 for a year?
At 20,000 km a year and Ontario average prices, about $2,883 in fuel, producing roughly 4,297 kg of CO2. Your own distance and prices will change this — the calculator lets you set both.

Source: Transport Canada — Vehicle Recalls Database; NRCan — Fuel consumption ratings. Data current as of 30 July 2026. Running cost uses Ontario average prices (155 ¢/L, 14.5 ¢/kWh), which are hand-maintained estimates. 30,784 rated vehicles on file.