This page covers 4 recalls, 10 owner complaints and EPA fuel economy for the 2014 Mercedes-Benz Cls550.
20 mpg combined
11.8 L/100km
Compact Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
Suspension is the clearest pattern in what owners of the 2014 CLS550 report. Multiple owners describe subframe corrosion, with rust affecting the rear subframe extensively enough to require replacement in at least one case, and a related complaint ties corroded brake lines to the same area of the car. Air suspension failures also come up more than once: owners report front air shocks or strut assemblies failing suddenly while driving, without warning, and one owner notes the failure happened after hitting a pothole. Parts availability has added to the frustration in at least one case, with the strut assembly backordered and the vehicle left unrepaired. The remaining complaints are isolated, one mentions a fuel smell detected while the car was parked, another touches on steering, and don't form a clear secondary pattern at this complaint volume.
10
Total Complaints
1
Crash-Related
1
With Injuries
By System
The 2014 Mercedes-Benz CLS550 has 4 recalls, the most serious involving a hood rubber seal that can fall into the engine compartment and contact hot exhaust components, raising the risk of an engine fire.
A software fault affecting the airbag control system can cause airbags to fail to deploy correctly in a crash, reducing the protection they are designed to provide. The exterior lighting recall covers LED taillights that may not illuminate on the sides of the vehicle, making the car harder for other drivers to see from rear angles, particularly during lane changes or low-light conditions. There is also a software issue with the emergency call system, where an incorrect internal date and time can cause the system to relay an inaccurate vehicle location to emergency responders during a collision, potentially delaying the arrival of help.
At a glance
What can fail
A software error causes the eCall emergency system's date and time to be incorrect, which may result in an inaccurate vehicle location being sent during an emergency call.
What the fix does
Mercedes-Benz will send a remote software update to your vehicle. Dealers will verify the update worked or install a new communication module software at no cost.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Control unit software may be incorrect, potentially preventing airbags from deploying properly during a crash.
What the fix does
Dealers will update the control unit software at no cost to restore proper airbag deployment function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The LED tail lights may fail to illuminate on the sides of the vehicle, reducing rear side visibility and not meeting federal lighting standards.
What the fix does
Dealers will update the lighting controller software at no cost to restore proper tail light function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A rubber seal at the back of the engine bay may stick to the hood when opened, then fall into the engine bay when the hood closes.
What the fix does
Dealers will attach four additional retaining clips to the rubber seal to keep it secure.
Summarized — see the official notice for exact wording, dates, and contacts.
