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Very Poor MPG On 2003 MDX W/ 50K miles and well Maintained. Need Help!

1K views 0 replies 1 participant last post by  Crusin88 
#1 ·
Hi, I am averaging about 11/12 MPG overall and for mostly highway driving. Engine is a 3.5L engine. Is the injector heads that could have dirt clogged in them, fuel filter, or something else? Previous owner was getting about 17mpg for both city and highway. Has a Clean air filter too. Any ideas or point to the culprit/issue?
 
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