Question about Hyundai Motor 2005 XG350
Poor mileage ever since I bought the car. The salesman promised 27-30 MPG in town. I get 16. 17 with 93 octane. I drive within the speed limit and am cautious. I purchased the car used with about 12000 miles on it.
Incomplete combustion due to ignition problems, poor compression, worn or broken EGR valve, sticking injectors, old O2 sensor, dirty air filter, and just about anything else that affects how well the engine would run. Start with a code scanner to find out if there are any stored fault codes.
Posted on Jun 18, 2008
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Posted on Jan 02, 2017
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