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2008 - Current Dodge Avenger The new Dodge Avenger gives a sporty look to the often drab mid-sized sedan class, with the possible future option of AWD and a performance engine upgrade.

Tune Up

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Old Mar 12, 2015 | 06:17 PM
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I have a 2008 Avenger and my mpg has gone down from over 30mpg on highway to 24. I have replaced plugs and no difference. It runs smoothly but idles a little rough. If I take it yo the dealer will they be able to electronically tune it? I only have 90k miles on it. 4 cyl
 
Last edited by tbyrd; Mar 12, 2015 at 06:18 PM. Reason: add info
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Old Mar 12, 2015 | 07:31 PM
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No. There is no such thing.
 
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Old Mar 13, 2015 | 07:29 PM
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Any suggestions to check to restore mileage.
 
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Old Mar 14, 2015 | 07:11 AM
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O2 sensors, clean the throttle body, keep your tire pressures up and use a light right foot.
 
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Old May 23, 2015 | 11:27 AM
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jkeaton, you forgot to mention an air filter, but the OP most likely has done that.
 
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