Based on data from 22 vehicles, 1,592 fuel-ups and 427,274 miles of driving, the 2004 Kia Optima gets a combined Avg MPG of 22.99 with a 0.27 MPG margin of error.

Any Engine Type 2.4L L4 GAS (9) 2.7L V6 GAS (4) H4 GAS (1) L4 GAS (3) V6 GAS (3) Any Body Style Sedan (5) Any Submodel LX (7) EX (7) Other (8)

Below you can see a distribution of the fuel-ups with 63 outliers (3.81%) removed.

Following shows the average MPG of each of the 22 vehicles in the system.

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• Old man

  2004 Kia Optima EX 2.4L L4 GAS Automatic 4 Speed
  Added Mar 2017 • 257 Fuel-ups

  Property of OldOwl

• 20.0 Avg MPG

• KIA

  2004 Kia Optima EX 2.7L V6 GAS Automatic 4 Speed Sedan
  Added Mar 2017 • 242 Fuel-ups

  Property of tridaddy

• 17.9 Avg MPG

• Optima

  2004 Kia Optima EX 2.7L V6 GAS Automatic 4 Speed Sedan
  Added Jun 2021 • 70 Fuel-ups

  Property of jmkukowski

• 24.1 Avg MPG

• AFG 2500

  2004 Kia Optima 2.0 (A) H4 GAS
  Added Jul 2021 • 6 Fuel-ups

  Property of DSV4600

• 15.4 Avg MPG

• KIA

  2004 Kia Optima LX 2.4L L4 GAS Automatic 4 Speed
  Added Sep 2016 • 34 Fuel-ups

  Property of drifter47

• 25.3 Avg MPG

• 04 Kia Optima

  2004 Kia Optima EX 2.4L L4 GAS Automatic Sedan
  Added Apr 2019 • 403 Fuel-ups

  Property of toddcasto

• 27.4 Avg MPG

• Red Car

  2004 Kia Optima LX 2.4L L4 GAS Manual 5 Speed Sedan
  Added Apr 2023 • 165 Fuel-ups

  Property of Wookiecola

• 27.1 Avg MPG

• My Optima

  2004 Kia Optima LX 2.4L L4 GAS Automatic 4 Speed
  Added Apr 2017 • 14 Fuel-ups

  Property of calivic

• 23.7 Avg MPG

• Slimsal

  2004 Kia Optima EX 2.7L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 19 Fuel-ups

  Property of slimsal

• 23.6 Avg MPG

• My Optima

  2004 Kia Optima LX 2.4L L4 GAS Automatic 4 Speed
  Added Aug 2016 • 32 Fuel-ups

  Property of Wilki117

• 24.0 Avg MPG

• Optima

  2004 Kia Optima LX 2.4L L4 GAS Automatic 4 Speed
  Added Mar 2016 • 146 Fuel-ups

  Property of JNeg13

• 22.7 Avg MPG

• BLUI KNIGHT

  2004 Kia Optima EX
  Added Mar 2017 • 227 Fuel-ups

  Property of silkyedica

• 20.5 Avg MPG

• Kia Optima

  2004 Kia Optima EX 2.4L L4 GAS Automatic 4 Speed
  Added Aug 2016 • 94 Fuel-ups

  Property of hoegers

• 31.6 Avg MPG

• Kia Optima

  2004 Kia Optima LX 2.7L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 7 Fuel-ups

  Property of nmerla

• 25.5 Avg MPG

• Kia

  2004 Kia Optima GAS V6
  Added Nov 2012 • 5 Fuel-ups

  Property of lakey

• 24.9 Avg MPG

• Kia Optima

  2004 Kia Optima GAS V6
  Added Aug 2008 • 142 Fuel-ups

  Property of mgorf2005

• 22.2 Avg MPG

• My car

  2004 Kia Optima GAS V6
  Added Dec 2009 • 36 Fuel-ups

  Property of Rosmar23

• 22.9 Avg MPG

• Kia Optima

  2004 Kia Optima LX 2.4L L4 GAS Automatic 4 Speed
  Added Oct 2016 • 164 Fuel-ups

  Property of 151684186183

• 28.6 Avg MPG

• Kia Optima

  2004 Kia Optima GAS L4
  Added Jul 2010 • 3 Fuel-ups

  Property of cltdba

• 26.6 Avg MPG

• Optima

  2004 Kia Optima
  Added Nov 2008 • 55 Fuel-ups

  Property of JenniferH20

• 27.8 Avg MPG

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