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Total NHTSA Complaints
10
Owner filings recorded
#1 Reported Problem
Electrical System
4 reports (40%)
Crash Incident Reports
1
Filings citing a crash
Fire & Injury Reports
1
0 fire • 1 injury filings
Defect Investigation Analysis

Executive Problem Findings

AutoUtility currently tracks 10 official NHTSA owner defect complaints for the 2021 Mercedes-Benz A-Class. Electrical System issues are the most frequently reported category, appearing in 4 complaints (40% of submitted records). Among these NHTSA complaint records, 1 filing cites a crash, 1 reports one or more injuries.

Methodology Notice: Consumer complaints are unverified voluntary submissions to the NHTSA Office of Defects Investigation (ODI). Filings are not normalized for sales volume or vehicle mileage and do not constitute an audited component failure rate.
Incident & Severity Profile
  • • Total Owner Reports: 10 complaints submitted under federal penalty.
  • • Primary Subsystem: Electrical System accounts for 40% of submissions (4 reports).
  • • Secondary Systems: Driver Assistance & Safety Tech (4), Powertrain & Transmission (2).
  • • Crash Incidents: 1 filings cite an impact or collision.
  • • Thermal Incidents: 0 filings cite smoke or fire.
  • • Reported Casualties: 1 injury filings • 0 fatality filings.
Category Distribution

Reported Defect Categories for 2021 Mercedes-Benz A-Class

Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records

Electrical System
4
40%
Driver Assistance & Safety Tech
4
40%
Powertrain & Transmission
2
20%
Engine & Cooling
1
10%
Air Bags & Restraints
1
10%
#1 40% SHARE

Electrical System

4 owner complaints submitted to NHTSA ODI for this subsystem.

✓ 0 Incidents
⚠️ 1 Associated Recall Campaign
#2 40% SHARE

Driver Assistance & Safety Tech

4 owner complaints submitted to NHTSA ODI for this subsystem.

✓ 0 Incidents
⚠️ 1 Associated Recall Campaign
#3 20% SHARE

Powertrain & Transmission

2 owner complaints submitted to NHTSA ODI for this subsystem.

✓ 0 Incidents
#4 10% SHARE

Engine & Cooling

1 owner complaint submitted to NHTSA ODI for this subsystem.

✓ 0 Incidents
Consumer Filings

Recent NHTSA Owner Reports for 2021 Mercedes-Benz A-Class

Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation

Visibility, Wipers & Glass ODI #11717944
Filed: 02/13/2026
Defect Report

"Sunroof shattered unexpectedly. Was driving and gun shot sound was the was top sunroof shattering. Was on smooth road going 45 mph with no other vehicle in front or behind."

Powertrain & Transmission ODI #11714047
Filed: 01/28/2026
Defect Report

"this is a formal notification regarding my vehicle that I purchased at House Of Imports on February 27, 2021. A Mercedes Benz A-Class 220 year 2021, VIN #[VIN REDACTED]. Shortly after purchase I experienced several safety concerns about the vehicle. The first and main concern are while driving..."

Powertrain & Transmission ODI #11660206
Filed: 05/10/2025
Defect Report

"While driving my lease vehicle on two separate days, it completely shut down while in motion with no prior warning. The first incident occurred while crossing a MAX train intersection in downtown Portland. The engine stopped mid intersection, emitted a strong mechanical odor, ticking noises began,..."

Driver Assistance & Safety Tech ODI #11590984
Filed: 05/28/2024
Defect Report

"Rear view camera says it is inoperative when I put it in reverse. I understand that a number of Mercedes models have been recalled due to a software issue but the dealer tells me my car is not on the list. The problem I have is identical to the other models. My car should be on the list"

Other / Miscellaneous ODI #11500556
Filed: 01/07/2023
Defect Report

"there’s a recall, and I need it fixed asap, i called mercedes and they said they don’t know when they’ll be able to do it, that it could take “years” ??????"

Multi-Year Trend

Complaint History for Mercedes-Benz A-Class

Reported defect complaint volume across sibling model years (2019–2022)

Model Year NHTSA Complaints Crash Reports Safety Recalls Detailed Report
2019 Mercedes-Benz A-Class 45 0 14 View 2019 Problems →
2020 Mercedes-Benz A-Class 21 2 10 View 2020 Problems →
2021 Mercedes-Benz A-Class Current Page 10 1 4 Current
2022 Mercedes-Benz A-Class 3 0 2 View 2022 Problems →
Exhaustive System Audit

Detailed NHTSA Component Breakdown for 2021 Mercedes-Benz A-Class

Complete distribution of consumer defect reports across all 9 granular NHTSA system and subsystem classifications

Vehicle Component / System Total Complaints Crash Reports Fire Reports Injury Entries Fatality Entries
ELECTRICAL SYSTEM,BACK OVER PREVENTION 2 0 0 0 0
Back Over Prevention / Camera NHTSA category: BACK OVER PREVENTION 1 0 0 0 0
Electrical System NHTSA category: ELECTRICAL SYSTEM 1 0 0 0 0
POWER TRAIN,ELECTRICAL SYSTEM,ENGINE 1 0 0 0 0
POWER TRAIN,UNKNOWN OR OTHER 1 0 0 0 0
Seat Belts NHTSA category: SEAT BELTS 1 1 0 1 0
Other / Uncategorized NHTSA category: UNKNOWN OR OTHER 1 0 0 0 0
VEHICLE SPEED CONTROL,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE 1 0 0 0 0
Visibility & Wipers NHTSA category: VISIBILITY/WIPER 1 0 0 0 0
Search Intelligence

Quick Answers: Common Problems & Reliability Questions for the 2021 Mercedes-Benz A-Class

Direct, deterministic answers synthesized from verified United States government databases for the 2021 Mercedes-Benz A-Class

What are the most common reported problems with the 2021 Mercedes-Benz A-Class?

In official NHTSA consumer records, the most frequently cited issue area for the 2021 Mercedes-Benz A-Class is Electrical System, appearing in 4 records (40% of submitted filings).

Secondary reported categories include Driver Assistance & Safety Tech (4) and Powertrain & Transmission (2).

Source: NHTSA Office of Defects Investigation (ODI)

Is the 2021 Mercedes-Benz A-Class a reliable vehicle?

AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 10 consumer defect complaints and 4 safety recall campaigns for the 2021 Mercedes-Benz A-Class.

Reviewing documented component complaint distributions, recall remedy notices, and active federal investigations provides an objective, evidence-based view of the vehicle's historical safety and defect record.

Source: NHTSA ODI & Safety Recalls Databases

Are there crash, fire, or injury reports associated with the 2021 Mercedes-Benz A-Class?

Among consumer complaint records on file with NHTSA for the 2021 Mercedes-Benz A-Class, 1 filing cites a crash, 0 cite smoke or fire, and 1 report one or more injuries.

Incident entries represent consumer descriptions at the time of submission to federal authorities and do not establish mechanical causation or legal liability.

Source: NHTSA Office of Defects Investigation Consumer Logs
Official US Government Data Provenance

The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database under 49 CFR Part 576.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.