Honda (American Honda Motor Co
Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
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severe Owners of the 2020 Acura MDX have filed 7 NHTSA complaints about the brakes at roughly $450 to repair (U.S. federal records, as of September 2026). Source: NHTSA Office of Defects Investigation. See brakes across all vehicles →
| Model year | brakes complaints |
|---|---|
| 2016 MDX | 8 |
| 2017 MDX | 8 |
| 2019 MDX | 5 |
| 2020 MDX (this page) | 7 |
| 2022 MDX | 7 |
| 2023 MDX | 5 |
| 2024 MDX | 6 |
Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
It's a meaningful issue. 7 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover brakes issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.