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2020 Mazda Mazda3 Sedan
Solid pick. The complaint record is strong for its age. It does carry safety recalls, so confirm every one shows "remedy completed" on the VIN before money changes hands.
32 owner complaints · 2 recalls · data verified July 18, 2026 · source: NHTSA
Why buy?
Driver assistance problems dominate (47% of complaints).
Very few owner complaints for its age and sales volume.
Complaints are overwhelmingly minor: almost none involve crashes, fires, or injuries.
Score breakdown, by factor
Full methodology →#3 of 389Among the 2020 models with a matured record, the 2020 Mazda Mazda3 Sedan ranks #3, scoring higher than 98% of them. See the 2020 ranking →
Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
5/5 overall
NHTSA 5-Star Safety Rating · 2020 Mazda Mazda3 5 HB AWD
Rollover risk in a single-vehicle crash: 10%
No open NHTSA defect investigations on file.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2020 Mazda Mazda3 Sedan, plotted where owners report it happening.
Also reported (mileage varies): Driver assistance (15)
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint, a rough guide, not a schedule.
Driver assistance
47%15 complaints
“My car's automatic emergency brake is deploying without warning, during driving, when there are no other cars in my forward proximity. I took it to the dealership to h…”
Steering
9%3 complaints · 1 in the last 2 years
“TSB 02-003/24 Car front suspension bolts corroded and making metal on metal sounds during turning and braking”
Electrical system
9%3 complaints
“Automatic safety notification censoring system for the brakes engaged when a stop was not applicable or necessary causing the car to brake on its own in traffic. Lucki…”
Brakes
9%3 complaints
“My car's automatic emergency brake is deploying without warning, during driving, when there are no other cars in my forward proximity. I took it to the dealership to h…”
Check it against this car’s mileage
Type the odometer reading on the actual car you’re looking at to see which of these problem areas owners tend to report before it, around it, or after it.
Too few owners named a mileage on this model to place issues against an odometer yet.
Recalls (2)
Safety recall repairs are free at the brand’s franchised dealers. Before buying, run the VIN at nhtsa.gov/recalls and make the seller show the work was done.
Service Brakes, Hydraulic · 20V346000
Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 and Mazda3 vehicles. The front brake caliper mounting bolts may not have been tightened properly during assembly, possibly allowing the calipers to loosen.
Risk: Loose brake calipers can reduce braking performance or interfere with wheel rotation, affecting vehicle handling. Either of these scenarios can increase the risk of a crash.
Fix: Mazda will notify owners, and dealers will inspect the front brake caliper bolts, tightening them as necessary. If bolts are missing, the affected brake caliper will be replaced. Repairs will be performed free of charge. The recall began July 24, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4420F.
Forward Collision Avoidance · 19V907000
Mazda North American Operations (Mazda) is recalling certain 2019-2020 Mazda3 vehicles. The Smart Brake System (SBS) can falsely detect an obstacle while driving, activating the automatic emergency braking system and suddenly stopping the vehicle.
Risk: Stopping the vehicle unexpectedly increases the risk of a crash.
Fix: Mazda will notify owners, and dealers will update the SBS software. In addition, vehicles with certain production dates will receive an instrument cluster software update or replacement and a replacement owner's manual. These repairs will be performed free of charge. The recall began February 14, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4219L.
Questions to ask the seller
Questions worth asking the seller of this Mazda before you buy, drawn from its public record:
- NHTSA lists 2 recall campaigns for the 2020 Mazda Mazda3 Sedan. Can you run this car's VIN at nhtsa.gov/recalls and confirm each one shows "Remedy Completed"?
- Owners of this model report driver assistance problems more than anything else. Has this car shown any driver assistance symptoms, and are there repair records for it?
- Has this car been in any accident, and can you share a title history and any service records you have?
- How many owners has it had, do you have the maintenance records, and why are you selling it?
- Are you open to me having an independent mechanic inspect it before we settle on a price?
Before you hand over money
Verify the recall work was done
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2020 Mazda MAZDA3 SEDAN beats every score on the internet, including ours.
What to ask forNot set on the 2020? See how every Mazda3 Sedan model year scores →
Cross-shopping? Compare the 2020 Mazda Mazda3 Sedan against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.