Why does my 07 Chevy Cobalt burn so much gas?

Your 2007 Chevy Cobalt may burn more gas due to several factors, including a malfunctioning fuel injector, a dirty air filter, or issues with the oxygen sensor. Additionally, problems with the ignition system, such as worn spark plugs, can lead to inefficient combustion. If the tires are underinflated or if the vehicle has a heavy load, fuel efficiency can also decrease. Regular maintenance and diagnostics can help identify and resolve these issues.