2018 Chevrolet Impala Reliability Report

Owners of the 2018 Chevrolet Impala frequently report sudden loss of power steering, often without warning or prior indication of issues. Common symptoms include the steering wheel becoming inoperable or stiff, accompanied by warning messages such as "Power Steering, Drive with Care" or "Service Stability." Complaints suggest that these issues occur at various mileage points, including as early as 26,473 miles and around 74,000 miles. There are no reports of crashes or fires, but the sudden loss of steering assist poses a potential safety risk, especially if it occurs while the vehicle is in motion. Buyers should be aware of the potential need for costly repairs related to the power steering electrical motor and gear.

Owners report persistent issues with the airbag system in the 2018 Chevrolet Impala, particularly involving the passenger seat airbag sensor malfunctioning, which can intermittently fail to detect an occupant. Complaints frequently mention airbag warning lights illuminating and audible alerts advising immediate service, with some owners noting that these issues are not covered under warranty despite the vehicle's age and mileage, often around 62,000 miles. One report involves a crash where the airbags did not deploy, resulting in injury, highlighting a potential safety risk. Additionally, there is an instance where the driver's side airbag deployed without cause while the vehicle was parked. These patterns suggest that potential buyers should be aware of airbag sensor and deployment issues, particularly in vehicles with higher mileage.

Owners of the 2018 Chevrolet Impala report issues with the service brakes, frequently describing situations where the brakes fail to respond effectively, requiring excessive force to stop the vehicle. Complaints often mention incidents where vehicles continue to roll despite brake application, leading to crashes. Typical symptoms include the vehicle sliding or failing to stop as expected, even at low speeds or when driving with the flow of traffic. These issues are noted at various mileages, including one instance at 122,690 miles. Safety implications are significant, with all reported incidents involving crashes and one resulting in an injury. Buyers should be aware of these brake-related issues, especially given the potential for loss of control and collision.

Owners of the 2018 Chevrolet Impala frequently report issues with water intrusion in the headlight housings, which leads to condensation and an accumulation of water inside. This condition is noted to cause reduced illumination and poor visibility during nighttime driving. One owner mentions this issue occurring at approximately 44,000 miles. While one complaint involves a crash, it does not specify if the headlight issue directly contributed to the incident. Used car buyers should be aware of potential visibility problems related to the headlight design, which might require additional maintenance or repair efforts.

Owners of the 2018 Chevrolet Impala report issues with sudden power loss while driving, particularly at highway speeds, accompanied by a "Reduced Engine Power" warning. This symptom requires the vehicle to be stopped and restarted for temporary relief, though the check engine light remains on. Another reported issue involves a strange odor entering the cabin, traced to a defective air conditioning evaporator coil leaking freon, with the failure occurring around 39,000 miles. The sudden power loss poses potential safety risks, including the possibility of rear-end collisions. These patterns provide valuable insights for used car buyers considering this model.