This page covers 1 recall, 505 owner complaints and EPA fuel economy for the 2011 Chevrolet Impala.
21–23 mpg combined
10.2–11.2 L/100km
Large Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 2 tested variants for this model year.
The dominant complaint pattern on the 2011 Impala centers on the electrical system and engine, often reported together. Owners frequently describe a sequence where a "Service StabiliTrak" warning appears, followed by a reduced engine power message, and then stalling or a no-restart condition. Some owners report the throttle body as the component that was replaced to resolve it, though the problem recurs for others after repairs. Electrical complaints span a broader range of intermittent warning lights and system faults that don't always trigger a code when a shop looks at the car, making diagnosis frustrating. Seats are the highest-volume complaint category but the representative data provided doesn't detail specific seat failure patterns. The StabiliTrak and reduced power sequence is the clearest recurring theme, with owners describing it happening both at low speed and while driving, sometimes leaving the car unable to restart after stalling.
505
Total Complaints
22
Crash-Related
5
Fire-Related
19
With Injuries
By System
At a glance
What can fail
The front lower control arms may fracture, potentially affecting steering and suspension stability.
What the fix does
Dealers will replace both front lower control arms at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
