AutoUtility currently tracks 1 official NHTSA owner defect complaint for the 2021 BMW Z4. Other / Miscellaneous issues are the most frequently reported category, appearing in 1 complaint (100% of submitted records). Zero crashes, fires, injury reports, or fatality reports are cited across these complaint records.
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
"There is a strong chemical smell when the AC is turned on and the system is loosing refrigerant. There is a common issue on these cars of premature evaporative core corrosion."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 BMW Z4 | 0 | 0 | 1 | View 2015 Problems → |
| 2016 BMW Z4 | 4 | 1 | 1 | View 2016 Problems → |
| 2019 BMW Z4 | 5 | 1 | 6 | View 2019 Problems → |
| 2020 BMW Z4 | 5 | 1 | 6 | View 2020 Problems → |
| 2021 BMW Z4 Current Page | 1 | 0 | 5 | Current |
| 2022 BMW Z4 | 1 | 0 | 4 | View 2022 Problems → |
| 2023 BMW Z4 | 0 | 0 | 3 | View 2023 Problems → |
| 2024 BMW Z4 | 0 | 0 | 1 | View 2024 Problems → |
| 2025 BMW Z4 | 0 | 0 | 1 | View 2025 Problems → |
| 2026 BMW Z4 | 0 | 0 | 1 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 1 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 | 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 BMW Z4
In official NHTSA consumer records, the most frequently cited issue area for the 2021 BMW Z4 is Other / Miscellaneous, appearing in 1 records (100% 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 1 consumer defect complaint and 5 safety recall campaigns for the 2021 BMW Z4.
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.
Consumer complaint records on file with NHTSA for the 2021 BMW Z4 cite zero crashes, zero fires, and zero 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.