AutoUtility currently tracks 12 official NHTSA owner defect complaints for the 2018 Buick LaCrosse. Electrical System issues are the most frequently reported category, appearing in 5 complaints (41.7% 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
5 owner complaints submitted to NHTSA ODI for this subsystem.
4 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"When I get to a stop sign, and a stop light, when trying to accelerate after a complete stop, the car would struggle to accelerate to go forward. Where the shifting gears would start blinking, and the warning lights (engine power reduced, engine light, and the traction safety collision light) would..."
"The contact owns a 2018 Buick LaCrosse. The contact stated the hand controls were not working properly. While driving, the accelerator pedal was depressed, but the vehicle failed to respond. The engine power reduced message was displayed, and the check engine warning light was illuminated. After..."
"The 3.6 liter engine in my 2018 Buick Lacrosse Avenir only has 53,939 when we experienced a thermostat failure. The engine temperature was dead cold, and the dual electric fans were running non-stop. When I scanned the trouble code, I found PO128 which points to a faulty thermostat. Because the..."
"The contact owns a 2018 Buick Lacrosse. The contact stated while driving at an undisclosed speed, the vehicle hesitated to accelerate while the accelerator pedal was depressed. The contact pulled over and checked underneath the vehicle. The contact discovered that the START/STOP accumulator endcap..."
"Thermostat failure at 56,000 miles."
Reported defect complaint volume across sibling model years (2015–2019)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Buick LaCrosse | 44 | 5 | 3 | View 2015 Problems → |
| 2016 Buick LaCrosse | 48 | 5 | 2 | View 2016 Problems → |
| 2017 Buick LaCrosse | 34 | 0 | 2 | View 2017 Problems → |
| 2018 Buick LaCrosse Current Page | 12 | 0 | 3 | Current |
| 2019 Buick LaCrosse | 6 | 0 | 2 | View 2019 Problems → |
Complete distribution of consumer defect reports across all 7 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Electrical System NHTSA category: ELECTRICAL SYSTEM | 3 | 0 | 0 | 0 | 0 |
| Engine NHTSA category: ENGINE | 3 | 0 | 0 | 0 | 0 |
| POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| SERVICE BRAKES, HYDRAULIC,FUEL SYSTEM, GASOLINE,POWER TRAIN | 1 | 0 | 0 | 0 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 1 | 0 | 0 | 0 | 0 |
| Vehicle Speed Control NHTSA category: VEHICLE SPEED CONTROL | 1 | 0 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,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 2018 Buick LaCrosse
In official NHTSA consumer records, the most frequently cited issue area for the 2018 Buick LaCrosse is Electrical System, appearing in 5 records (41.7% of submitted filings).
Secondary reported categories include Engine & Cooling (4) and Powertrain & Transmission (3).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 12 consumer defect complaints and 3 safety recall campaigns for the 2018 Buick LaCrosse.
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 2018 Buick LaCrosse 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.