AutoUtility currently tracks 3 official NHTSA owner defect complaints for the 2021 Lexus IS. Engine & Cooling issues are the most frequently reported category, appearing in 1 complaint (33.3% of submitted records). Among these NHTSA complaint records, 1 filing cites a crash.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
1 owner complaint submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"I was in a vehicle accident on March 30. A accident that could have been avoided if the horn on the IS350 2021 was louder. The vehicle that collided into my vehicle was a Dodge Ram that was hauling a travel trailer which was what hit me. I tried honking various times to let the driver know that I..."
"The sunroof exploded while driving on a freeway. No rocks were involved, very loud explosion. Sun shade was closed, which prevented glass from getting inside car."
"The Oil Housing Cap cracked during an oil change on my 2021 Lexus IS300. This occurred at my mechanics shop. I would have taken the car to the dealer but the cost for an oil change is double. The mechanic charged me for the part $55.25. When he went to purchase the part from JM Lexus, Sample Road,..."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Lexus IS | 9 | 0 | 1 | View 2015 Problems → |
| 2016 Lexus IS | 2 | 0 | 0 | View 2016 Problems → |
| 2017 Lexus IS | 9 | 0 | 0 | View 2017 Problems → |
| 2018 Lexus IS | 3 | 0 | 1 | View 2018 Problems → |
| 2019 Lexus IS | 2 | 0 | 2 | View 2019 Problems → |
| 2020 Lexus IS | 7 | 1 | 0 | View 2020 Problems → |
| 2021 Lexus IS Current Page | 3 | 1 | 0 | Current |
| 2022 Lexus IS | 5 | 0 | 1 | View 2022 Problems → |
| 2023 Lexus IS | 5 | 0 | 0 | View 2023 Problems → |
| 2024 Lexus IS | 1 | 0 | 0 | View 2024 Problems → |
| 2025 Lexus IS | 1 | 0 | 0 | View 2025 Problems → |
| 2026 Lexus IS | 0 | 0 | 0 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 2 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 2 | 1 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,ENGINE | 1 | 0 | 0 | 0 | 0 |
Cross-reference safety recalls, crash test safety ratings, and EPA fuel economy for this model year
Key performance indicators, EPA fuel economy specs, powertrain variants, and summary ratings.
Official recall campaigns, safety defect descriptions, and manufacturer free remedy instructions.
NHTSA 5-Star NCAP crash test results, driver assistance systems, and rollover resistance ratings.
EPA fuel economy ratings, electric range, and annual energy cost benchmarks.
Direct, deterministic answers synthesized from verified United States government databases for the 2021 Lexus IS
In official NHTSA consumer records, the most frequently cited issue area for the 2021 Lexus IS is Engine & Cooling, appearing in 1 records (33.3% of submitted filings).
Complaint counts reflect unverified owner submissions and describe reporting frequency rather than confirmed mechanical defect rates.
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 3 consumer defect complaints and 0 safety recall campaigns for the 2021 Lexus IS.
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.
Among consumer complaint records on file with NHTSA for the 2021 Lexus IS, 1 filing cites a crash, 0 cite smoke or fire, and 0 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.
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.