"How reliable is the 2018 Chevrolet Impala?"

"Based on 86 NHTSA complaints, the 2018 Chevrolet Impala has a median complaint mileage of 45365 miles. The most common issue is Unknown Or Other."

"What are common problems with the 2018 Chevrolet Impala?"

"The most frequently reported component in NHTSA complaints for the 2018 Chevrolet Impala is Unknown Or Other, accounting for a significant portion of the 86 total complaints filed."

2018 Chevrolet Impala: Reliability Data

Source: NHTSA — 86 complaints

Total Complaints

45,365mi

Median Mileage

Unknown Or Other

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

19,820 25th Percentile

45,365 Median Mileage

62,106 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Unknown Or Other

Electrical System

Power Train

Engine

Steering

Service Brakes

Air Bags

Exterior Lighting

Seats

Fuel/Propulsion System

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"WHILE DRIVING ON HIGHWAY, WENT TO TOUCH THE HAZARD BUTTON BUT PUSHED THE ENGINE START/ STOP BUTTON INSTEAD. ENGINE SHUT OFF. HAD TO PULL OFF THE ROAD, ENGAGE BRAKE, PUT TRANSMISSION INTO PARK TO BE ABLE TO START CAR. THE HAZARD LIGHTS BUTTON IS WAAAYYY TO CLOSE TO THE START STOP BUTTON. ESPECIALLY W..."

"TL* THE CONTACT OWNS A 2018 CHEVROLET IMPALA. WHILE DRIVING APPROXIMATELY 50 MPH, THE CONTACT'S VEHICLE WAS INVOLVED IN A FRONT END COLLISION WITH A DEER. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS FILED. THE VEHICLE WAS DAMAGED AND TOWED TO AN INDEPENDENT BODY SHOP. THE MANUFACTURER AND DEALE..."

"I OWNED A NEW 2014 CHEVROLET IMPALA. THE 2014 IMPALA HAD A BACKUP CAMERA SYSTEM WHICH WAS OUTSTANDING. I NEVER HAD A PROBLEM WITH WHAT I SAW ON THE REAR VIEW MONITOR SCREEN WHICH WAS ON THE DASH OF THE IMPALA. I TRADED IN THE 2014 CHEVROLET IMPALA FOR A 2018 AND NOW THERE ARE TWO MAJOR PROBLEMS WITH..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Unknown Or Other 16 complaints

25th: 539 mi Median: 17,921 mi 75th: 50,791 mi

Electrical System 11 complaints

25th: 44,543 mi Median: 51,300 mi 75th: 57,275 mi

Power Train 10 complaints

25th: 62,975 mi Median: 84,650 mi 75th: 105,500 mi

Where Are Complaints Coming From?

Top states by complaint count.

FL: 15 GA: 12 IN: 7 MS: 6 SC: 6 OH: 5 PA: 4 MI: 4 KY: 4 TX: 3

Chevrolet Impala — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
1995	64	-	Tires	1
1996	120	55,000	Hydraulic Power Assist System	2
2000	1128	92,000	Electrical System	73
2001	957	80,000	Electrical System	55
2002	1076	79,542	Electrical System	51
2003	935	88,000	Electrical System	44
2004	1375	70,000	Electrical System	80
2005	808	81,289	Electrical System	62
2006	803	77,000	Electrical System	91
2007	930	60,400	Electrical System	80
2008	1203	75,000	Electrical System	80
2009	1365	80,000	Air Bags	89
2010	737	75,000	Electrical System	30
2011	844	65,000	Electronic Stability Control (Esc)	39
2012	422	55,000	Electrical System	40
2013	466	55,000	Electronic Stability Control (Esc)	31
2014	1016	64,000	Electrical System	31
2015	429	60,000	Electrical System	13
2016	173	49,141	Electrical System	15
2017	135	44,000	Unknown Or Other	6
2019	39	38,487	Electrical System	6
2020	23	-	Unknown Or Other	2

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28