2021 Mazda CX-5 Lane departure Problems
- Complaints
- 7about this part
- Share
- 5%of 148 total for the year
- Median mileage
- 95,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the lane departure of the 2021 Mazda CX-5, 5% of the 148 complaints for this model year. Where a mileage was given, the median is 95,000 miles. 2 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was entering a traffic circle when i slid slightly as there was some ice on the roadway and came to rest against a curb, bumped lightly. There was no damage to the vehicle, but the entire driver side curtain airbags as well as the driver seat airbag deployed. The speed at which I was traveling was roughly 10 mph or less. My wheels never hit hard nor did they leave the pavement.”
NHTSA complaint #11709239, filed 2026-01“While driving in the Interstate, a truck swerved towards my lane; I swerved into the next lane to avoid the truck hitting me and when I began to swerve my Lane Departure warning malfunctioned and caused my car to completely shut down. I immediately put my hazard lights on to hopefully avoid being hit; but, a car behind plowed right into my rear end. The police were onsite at the accident. My vehicle has been inspected by an independent service center and my insurance representative.”
NHTSA complaint #11755082, filed 2026-08“BSM Does not see all vehicles in the blind spot. It is very inconsistent. I have taken it to the dealer who told me that they could not repair it because no fault code shows up. Mazda has not been helpful.”
NHTSA complaint #11453753, filed 2022-02“I bought a 2021 Mazda CX-5 from Ramsey Mazda of Des Moines, IA. It offered comparable comfort & features. A selling point was the safety features touted by the salesman. Odd things occurred during the first few months but I attributed it to a learning curve. I saw some odd messages but I really did not think it was relevant until June 28, 2022. I was backing out from a parking space. The Blind Spot Monitoring failed to indicate a car approaching from the right that then stopped in my blind spot. I hit the car behind me. …”
NHTSA complaint #11481503, filed 2022-08“The blind spot monitoring system does not function properly. While on the freeway some vehicles show up and some do not. I took it to the dealer, and they test drove it and said it was working properly and there were no codes. I contacted Mazda and they made a second appointment for me, and I took it back. I told them that it only does it on the freeway and I sent them a video showing the problem. They said they drove it again (not on the freeway) and told me it worked fine and since there was no code, they could not fix it. …”
NHTSA complaint #11446862, filed 2022-01Lane departure: other model years
Other parts of the 2021 Mazda CX-5
80 complaintsOther or unknown
18 complaintsTransmission and drivetrain
17 complaintsElectrical system
12 complaintsBrakes
11 complaintsForward collision avoidance
11 complaintsFuel system
8 complaintsVehicle speed control
8 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsAir bags
5 complaintsTires
3 complaintsBack-over prevention (rear camera)
2 complaints
← All problems reported for the 2021 Mazda CX-5
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology