Mazda CX9 owners have reported 4 lane departure related problems since 1996. Table 1 shows the 3 most common lane departure problems. The number one most common problem is related to the vehicle's blind spot detection (2 problems). The second most common problem is related to the vehicle's assist (1 problem). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Blind Spot Detection problems | |
| Assist problems | |
| Warning problems |
Breaks became very hard to press and I was having trouble stopping the car. I could not drive it to the Mazda dealer who was too far. I took a chance and drove a few miles to local break shop. They replaced the master cylinder and the break booster. Parts and labor were $1083. 87 Read details...
1. Instrument cluster panel brightness does not adjust either too dim or too bright Mazda dealer stated no failures were found twice same responded. 2. Lane keep assist this feature never worked even on the straight road since I bought July 2022. Read details...
[xxx] 2018 Mazda cx-9 grand touring 89014 miles date: 9/11/2025 Mazda north american operations attn: customer experience center 7755 irvine center drive irvine, CA 92618 USA subject: formal complaint regarding safety and technical issue – 2018 Mazda cx-9 dear Mazda customer experience Read details...