What gas does a Chevy Cobalt take?
Most Chevy Cobalt models run on regular unleaded gasoline (87 octane). The high-performance Cobalt SS turbo, however, requires premium fuel.
The fuel requirements vary by engine and model year. The standard non-turbo Cobalt, powered by the 2.2L or 2.4L engines, typically uses regular unleaded gasoline with a minimum octane rating of 87 (AKI) and is compatible with ethanol blends up to about 10%. The Cobalt SS turbo, produced around 2008–2010, requires premium unleaded gasoline with an octane rating of 91 AKI or higher to sustain performance and prevent knocking. Always consult the owner's manual for your exact model year and drivetrain to confirm the correct fuel type.
Fuel requirements by engine
Here is a concise breakdown by engine to help you fill up correctly and avoid fuel-related issues.
- Non-turbo Cobalt (2.2L or 2.4L engines, generally 2004–2010): Regular unleaded gasoline with an octane rating of 87 (AKI) is suitable. Ethanol content up to 10% (E10) is commonly acceptable where available.
- Cobalt SS Turbo (2.0L turbo, produced ~2008–2010): Premium unleaded gasoline with an octane rating of 91 AKI or higher is recommended to maintain performance and prevent knock.
In short, regular 87-octane fuel covers most Cobalt models, while the turbocharged SS variant needs premium fuel. Always verify with your exact vehicle’s manual, as there can be year-to-year variations.
Additional considerations: ethanol, brands, and fueling tips
Gasoline with up to 10% ethanol (E10) is generally compatible with the Cobalt’s engines of these years. Avoid fueling with higher-ethanol blends (like E15 or E85) in non-flex-fuel configurations unless your manual explicitly allows it. When possible, use reputable fuel brands and, if you notice knocking, pinging, or reduced performance, refuel with the recommended octane level and consult a mechanic.
Summary
For most Chevys Cobalt models, regular 87-octane gasoline is appropriate. The exception is the Cobalt SS turbo, which requires premium gasoline (91 AKI or higher). Always check your specific model year and engine in the owner’s manual, and consider ethanol compatibility (E10) when selecting fuel. This ensures optimal performance and engine longevity across the Cobalt lineup.
