What gas does the 2004 Mercedes-Benz C-Class take?

The EPA rates every 2004 Mercedes-Benz C-Class engine on premium gasoline - Mercedes-Benz recommends or requires premium, and the label inside the fuel door says which. The 2.6L 6-cylinder and 3.2L 6-cylinder are flex-fuel and can also run on E85.

Key takeaways

  • 10 EPA-certified configurations listed for the 2004 Mercedes-Benz C-Class.
  • Rated on premium: if the owner's manual says premium required, use premium; if it says recommended, regular works with some loss of power and economy.
  • Only the engines marked flex-fuel can use E85.
2004 Mercedes-Benz C-Class: every EPA-listed configuration
EngineTransmissionDriveRated fuelE85
1.8L 4-cylinder supercharged5-speed automaticRWDpremium gasolineNo
1.8L 4-cylinder supercharged6-speed manualRWDpremium gasolineNo
2.6L 6-cylinder5-speed automatic4-Wheel or AWDpremium gasolineNo
2.6L 6-cylinder5-speed automaticRWDpremium gasolineNo
2.6L 6-cylinder5-speed automaticRWDpremium gasolineYes (flex-fuel)
2.6L 6-cylinder6-speed manualRWDpremium gasolineNo
3.2L 6-cylinder5-speed automatic4-Wheel or AWDpremium gasolineNo
3.2L 6-cylinder supercharged5-speed automaticRWDpremium gasolineNo
3.2L 6-cylinder5-speed automaticRWDpremium gasolineYes (flex-fuel)
3.2L 6-cylinder6-speed manualRWDpremium gasolineNo

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov). Each row is one certified configuration; a trim or option not sold in a configuration is not listed.

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