Most common 2016 Mercedes-Benz C450 problems
Share of the 16 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz C450 complaints by model year
2016 Mercedes-Benz C450 recalls (5)
Structure › Body › Roof and pillars
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014-2020 C-Class, CLA, GLA, S-Class, GLC, and GLE vehicles. 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…
Remedy: 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.
Structure › Body › Roof and pillars
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2020 C300 Coupe, C43 Coupe AMG, C43 AMG, 2015-2020 C300, GLA250, 2016-2018 C350e, CLA45 Coupe AMG, 2015 C400, S65 AMG, 2015-2019 C63 AMG, 2016 C450, 2015-2016 GLA45 AMG, S600, 2016-2020 GLC300, 2017-2019 GLC43 AMG, GLE43 Coupe AMG, 2014-2019 CLA250 Coupe, 2014-2015 CLA45…
Remedy: 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.
Communication
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge.
Electrical system › Starter assembly
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2015-2017 C300 4Matic, C300, CLA250, CLA250 4Matic and CLA45 AMG vehicles, 2017 C300 4Matic Cabrio, C300 4Matic Coupe, C300 Cabrio, C300 Coupe, E300, E300 4Matic, E400 4Matic Wagon, E43 AMG 4Matic, GLA250, GLA250 4Matic and GLC300 4Matic Coupe vehicles and 2016 C350e and…
Remedy: MBUSA will notify owners, and dealers will install an additional fuse in the electrical line to the starter, free of charge. The recall began August 31, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Visibility › Sun/moon roof assembly
Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2016 C300 vehicles manufactured December 11, 2015, to December 23, 2015, C300 4Matic vehicles manufactured December 12, 2015, to December 29, 2015, and C450 AMG 4Matic vehicles manufactured December 12, 2015, to December 22, 2015.
Remedy: MBUSA will notify owners, and dealers will inspect the bonding of the rear sunroof glass panel, replacing it as necessary, free of charge. The recall began on April 12, 2016.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2016 Mercedes-Benz C450:
Front Roof Panel Detachment
On January 8, 2021, after ongoing review with Mercedes Benz, the National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation (ODI) opened PE21-001 to assess allegations of front roof panel detachments while driving at highway speeds in certain 2015 Mercedes-Benz (Mercedes) C-Class vehicles.The subject front roof panel is a stationary panel composed of polycarbonate and is attached to the…
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
What 2016 Mercedes-Benz C450 owners say
Wheels & tires
Since I bought the my 2016 C450 amg in 2016 brand new I started having issues with the rims a month later after purchasing the car. I took it back to the service department and they told me it was a cracked rim ,I responded by letting them know I never ran over any potholes.the rim was repaired, but a month later again the problem accurred.my car has been in the service department for the same problem every other month for the same problem on each of my tires ,all of my tires have been cracked without me running into potholes.just yesterday I received my car back from service after a week of them having it for a cracked rim again on the front right side.when I left the service department the tire pressure was at 36 percent this morning all the tires are at their normal pressure except the right front tire it's at 30 percent. It is losing air again. …
Tl* the contact owns a 2016 Mercedes-Benz C450. The contact noticed that the front and rear passenger tires were deflating. The vehicle was taken to Mercedes-Benz of cherry hill (2151 nj-70, cherry hill, nj 08002) where it was diagnosed that the rims were cracked due to driving over potholes. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 24,000.
Electrical system
The sunroof locked open during a road trip. I am mechanically inclined, so adding lubricant and driving through a low pressure air front caused the sunroof to shut. Had I been in an emergency, not mechanically inclined, or if this happen during inclement weather or to a little old lady this would have been a severe issue causing the vehicle to become inoperable due to rain or snow entering the cabin and reducing visibility, and damaging the electronic components in the vehicle's cabin. This is also a safety hazard to the the drivers health in conditions of smog, extreme low temperature, animal attack or if there was an assault from a criminal with ill intentions.
The panoramic sunroof does not properly seal to car, allowing the glass to detach and fall from the vehicle during operation and likely to impair the operator during use. Furthermore, without properly sealing the internal cabin is exposed to the environment (i.e. rain, snow, ect.) causing further damage to the internal safety and electrical features.
Body & structure
Panoramic sunroof pillars/rails detaching while operating vehicle. 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. When operating the vehicle at a moderate speed, the sunroof continued to adjust itself on its own. Belive that there is a risk of the sunroof detaching from the stock plastic rails and that it may not be properly bonded. I do not feel comfortable usuing the Panoramic sunroof for fear of it detaching during driving conditions, putting other motorist and myself in danger.
The panoramic sunroof does not properly seal to car, allowing the glass to detach and fall from the vehicle during operation and likely to impair the operator during use. Furthermore, without properly sealing the internal cabin is exposed to the environment (i.e. rain, snow, ect.) causing further damage to the internal safety and electrical features.
2016 Mercedes-Benz C450 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo | 7-speed automatic | 4WD | 21 / 28 / 24 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2016 Mercedes-Benz C450 a good car?
There isn't enough complaint history for the C450 to compare model years reliably. So far owners have filed 16 complaints with NHTSA.
What is the most common problem with the 2016 Mercedes-Benz C450?
The wheels & tires — 5 complaints, 31% of all complaints for this model year, most often about rim. Next are the electrical system (4) and body & structure (4).
How many recalls does the 2016 Mercedes-Benz C450 have?
There are 5 recalls for the 2016 Mercedes-Benz C450, the most recent from December 15, 2023 (roof and pillars). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
At what mileage do 2016 Mercedes-Benz C450 problems happen?
The median mileage reported in complaints is about 39,000 miles; 75% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.