If the car has been operating for long period of time an hour or more when the auto stop kicks on the whole car turns off. Usually at a stop sign or stop light. In the middle of traffic. I have to let it sit off for a couple minutes and restart and jerks hard into gear. . Was told it's the battery fuse block and isn't covered by warranty.
2018 Chevrolet Impala electrical problems
moderate 8 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
8
Recalls
0
Avg fix
$850
When does it fail?
Of the 8 electrical complaints filed for the 2018 Chevrolet Impala, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
What owners are reporting 5 most recent
Tires-tires keep losing air pressure, they appeared new but when tested problems was found, they were wore to the outside as if aliment was needed, new tires was purchased electrical/battery-there is a frequent shut down of electrical system, while driving the engine light come on, from the driver information center (dic) the was 14.7, the battery was checked twice within a period of two…
I went to the store and came out to leave. I attempted to start my car and the radio came on, lights in the car flashed a couple of times and then I tried again. Then it started making a clicking sound.
Side detection device not working. Car was purchased in june at a reputable dealer. The dealership is not saying there is a problem, but the sensor is corroded. There are a number of other cases with the same problem.
Tire pressure sensor system receiver (part of keyless entry system) will not collect info from individual tire pressure sensors in tires. Failure of this safety system would not provide and advance warning of low tire pressure.
Had electrical trouble with your 2018 Chevrolet Impala?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2018 Chevrolet Impala?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 8 complaints filed, electrical issues most often appear around 43,591 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Chevrolet/Impala.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.