YearToAvoid

2021 Mazda CX-5 Reliability Data: Problems & Recalls

Caution The 2021 Mazda CX-5 has a Complaint Index of 69, ranking 5th worst out of 14 model years, and carries a Caution verdict. Engine problems dominate, making up 60% of its 146 complaints, with no recalls filed for this model year.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
69/100
#5 of 14 CX-5 years
Verdict
Caution
vs. other years of this model
Complaints
146
unique NHTSA reports
Recalls
0
distinct NHTSA campaigns
Crashes
9
reported in complaints
Fires
0
Injuries
7
Top issue
Engine
Best nearby year
2022
rated Best
NHTSA overall rating
5 / 5 ★
EPA combined MPG
25.5
23.5 city / 29 hwy
Injuries / deaths
7 / 0

Top 2021 Mazda CX-5 problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine88 (60%)
  2. Other18 (12%)
  3. Transmission & Powertrain17 (12%)
  4. Electrical System13 (9%)
  5. Collision Avoidance & Cameras13 (9%)
  6. Brakes11 (8%)
  7. Fuel System8 (5%)
  8. Lane Departure7 (5%)
  9. Visibility & Wipers6 (4%)
  10. Suspension, Wheels & Tires5 (3%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Some drivers report sudden unintended acceleration where the vehicle surges forward despite foot pressure on the brake pedal.
  • Owners describe brakes that fail to respond or engage unexpectedly, in one case with automatic braking triggering during adaptive cruise control use.
  • Several report the vehicle failing to start with a complete loss of electrical power after sitting unused, at low mileage.
  • One owner reported a sunroof glass panel shattering outward while driving on the highway.
  • A Lane Departure Warning malfunction was reported to cause the vehicle to shut down mid-lane-change.
  • Paint chipping on the hood and doors was reported within the first few thousand miles of ownership.
2021 Mazda CX-5 complaints: complaints filed per quarter212021 Q12021 Q42022 Q32023 Q22024 Q12024 Q42025 Q32026 Q2
146 complaints filed with NHTSA from 2021 Q1 to 2026 Q3; peak 2022 Q3 (21).

2021 Mazda CX-5 recalls

No safety recalls on record for this model year.

2021 Mazda CX-5 fuel economy and fuel cost

City
23.5 MPG
Highway
29 MPG
Combined
25.5 MPG
Annual fuel cost (EPA)
$2,550
15,000 mi/yr
Fuel
Regular
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2021 compared with other CX-5 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’12’13’14’15’16’17’18’19’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2019Avoid85270227
2020Caution62106026
2021Caution69146025.5
2022Best863025
2023Caution5462025

All Mazda CX-5 years: best and worst →

Frequently asked questions

Is the 2021 Mazda CX-5 reliable?
It carries a Caution verdict with a Complaint Index of 69, ranking 5th worst among 14 model years of CX-5 covered by NHTSA data. Engine-related complaints account for 60% of the 146 complaints filed for this year.
What is the biggest problem with the 2021 Mazda CX-5?
Engine issues are the top problem area, making up 88 of 146 complaints (60%), including reports of unintended acceleration and loss of braking response.
Does the 2021 Mazda CX-5 have any recalls?
NHTSA lists zero recalls for the 2021 Mazda CX-5, including no do-not-drive recalls.
How does the 2021 CX-5 compare to other years?
The 2021 model's Complaint Index of 69 is worse than the 2017 (15), 2022 (8), and 2024 (23) model years, all rated Best, but better than the 2016 model year, which has the worst index at 100.
What is the fuel economy of the 2021 Mazda CX-5?
EPA rates the 2021 CX-5 at 25.5 mpg combined (23.5 city, 29 highway), with an estimated annual fuel cost of $2,550.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.