Chevrolet

Impala (2018)

2018 · Full-Size Sedan · 1 engine
Best Engine ⚠️ Caution (3.2)
58 NHTSA Complaints
1 Recalls
0 Fire Reports
6 Crash Reports
View all 5 generations of the Chevrolet Impala → 📋 Inspection checklist

NHTSA Safety Ratings About NHTSA ratings

Overall 5/5
Frontal Crash
5/5
Side Crash
5/5
Rollover
4/5 (12.1% risk)
ESC: Standard FCW: Optional LDW: Optional

Engine Reliability Ratings

LFX - SIDI: Spark Ignited Direct injection, VVT, E85 MAX, ALUM

3.6L 6-cyl
⚠️ Caution (3.2)
50 complaints 28.0 per year Gasoline
View details

Complaint Breakdown

transmission
9
other
9
electrical
9
brakes
8
steering
7

Known Issues

Transmission Issues (9 complaints)
Electrical System Issues (9 complaints)
Brakes Issues (8 complaints)
Show 2 additional engine variants with limited data
These engines appear in fewer than 10 owner complaints and aren't included in the main ratings above. Low counts can mean a genuinely clean record, but they can also reflect VIN-decode anomalies in NHTSA data. Treat as informational, not as a confident rating.

Chevrolet Impala Unidentified Engine

Recommended (4.3)
4 complaints 4.0 per year
View details

Complaint Breakdown

electrical
2
transmission
1
other
1

Known Issues

Electrical System Issues (2 complaints)
Transmission Issues (1 complaints)

LCV -SIDI, DCVCP, VVT, DCVCP, E85 Max, E0-E100, Aluminum

2.5L 4-cyl
Recommended (4.3)
4 complaints 4.0 per year Gasoline
View details

Complaint Breakdown

wheels tires
1
exterior
1
electrical
1
engine
1

Known Issues

Wheels & Tires Issues (1 complaints)
Exterior Issues (1 complaints)
Electrical System Issues (1 complaints)

Vehicle-Level Issues

These issues affect the Chevrolet Impala regardless of engine variant.

Electrical System Issues (12 complaints)
electrical critical
Transmission Issues (10 complaints)
transmission critical
Brakes Issues (8 complaints)
brakes critical

Recalls (1)

18V576000Aug 29, 2018serious
Service Brakes

General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and 2018 Chevrolet Malibu vehicles. The rear brake caliper pistons may have an insufficient coating causing gas pockets to form, potentially reducing rear brake performance.

Alternatives in Full-Size Sedan

Frequently Asked Questions

What are the most common 2018-2018 Chevrolet Impala problems?

The 2018-2018 Chevrolet Impala has accumulated 58 NHTSA complaints. The most frequently reported problem areas are Electrical System, Transmission, Brakes. As with any used vehicle, an inspection before buying and a vehicle history report are recommended.

Which Chevrolet Impala engine is most reliable?

The 2018-2018 Chevrolet Impala was offered with 3 engine options. Based on NHTSA complaint data, the 3.6L 6-cyl has the lowest complaint density and is considered the most reliable choice for buyers.

Is the 2018-2018 Chevrolet Impala a good used car?

The 2018-2018 Chevrolet Impala can be a sound used car depending on trim, mileage, and maintenance history. With 58 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.

How many NHTSA complaints does the 2018-2018 Chevrolet Impala have?

The 2018-2018 Chevrolet Impala has 58 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.

What recalls affect the 2018-2018 Chevrolet Impala?

There is 1 NHTSA recall affecting some 2018-2018 Chevrolet Impala vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.

What should I check before buying a used Chevrolet Impala?

Before buying a used Chevrolet Impala, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Electrical System, Transmission, Brakes, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.

What are the NHTSA crash test ratings for the Impala?

The 2018 Chevrolet Impala received an overall 5-star safety rating from NHTSA. Frontal crash: 5 stars. Side crash: 5 stars. Rollover: 4 stars (12.1% rollover probability). Electronic Stability Control: Standard. Forward Collision Warning: Optional. Lane Departure Warning: Optional. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.

Data from NHTSA federal complaints database. 58 complaints analyzed. Data confidence: moderate. Last updated: 2026-07-24.

© 2026 The Weekly Driver