Most common 2023 Mercedes-Benz CLS450 problems
Share of the 3 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz CLS450 complaints by model year
Best CLS450 years: 2021, 2022. Compare all years →
2023 Mercedes-Benz CLS450 recalls (3)
Electrical system › Wiring
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 CLS450, E450, E450 All-Terrain, AMG E53, AMG GT43, AMG GT53, and 2021 AMG CLS53 vehicles. The 48-volt ground cable connection located in the engine compartment may not be tightened properly and may result in the ground cable overheating.
Remedy: Dealers will inspect the 48-volt ground cable connection and repair it as necessary, free of charge. Owner notification letters were mailed March 22, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.
Electrical system › ADAS › Blindspot › Sensors
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 E450, E350, AMG E63 S, AMG E53, CLS450, AMG GT53, and AMG GT43 vehicles. Due to a software error, the exit warning system audio and visual warnings may fail to alert occupants about approaching vehicles.
Remedy: Dealers will update the exit warning system software, free of charge. Owner notification letters were mailed September 8, 2023. Owners may contact MBUSA customer service at 1-800-367-6372.
Fuel system, gasoline › Delivery › Fuel pump
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
What 2023 Mercedes-Benz CLS450 owners say
Wheels & tires
Description of Defect: I am reporting a chronic and dangerous structural failure of the factory-equipped alloy wheels on my 2023 Mercedes-Benz CLS 450 4MATIC. Since purchase, this vehicle has suffered 8 documented incidents of wheel failure, consisting of 5 rim cracks and 3 complete wheel replacements. The failures are occurring under normal, paved driving conditions in the Dallas-Fort Worth area. This persistent cracking indicates a severe structural design defect where the wheel's load rating is insufficient for the vehicle's weight and low-profile tire configuration. Safety Risk: Each failure results in sudden and unpredictable loss of tire pressure. This creates a high risk of catastrophic tire deflation (blowouts) at highway speeds, which can lead to loss of vehicle control. …
The car is equipped with Continental ProContact GX SSR 245/40R19 runflat tires in the front. Since January of this year I have replaced the front tires 5 times. Once for the left front and four times for the right front. One time it was due to a bubble in the sidewall. Other four were from the sidewall tearing vertically in 2 places a few inches from each other. The pictures attached show how the tire failed four times. In the cases where the sidewall failed in some cases was from running over what felt like a shallow pothole and/or broken pavement. The broken pavement is one that I have gone over with another with non run flat tires multiple times without issue.
2023 Mercedes-Benz CLS450 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo hybrid | 9-speed automatic | AWD | 22 / 30 / 25 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2023 Mercedes-Benz CLS450 a good car?
Based on 3 owner complaints filed with NHTSA, the 2023 CLS450 rates few complaints: about as many complaints as a typical year of the CLS450 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2023 Mercedes-Benz CLS450?
The wheels & tires — 3 complaints, 100% of all complaints for this model year.
How many recalls does the 2023 Mercedes-Benz CLS450 have?
There are 3 recalls for the 2023 Mercedes-Benz CLS450, the most recent from February 9, 2024 (wiring). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz CLS450?
The best years by complaints, compared at the same age, are 2021 and 2022. See the full Mercedes-Benz CLS450 years comparison.
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.