I am having the same problems with poor gas mileage. My buck is a 2016. Must be just the way it is with this model. I have been to dealership they did a fuel injection cleaning and that did not help. Now they say we should look at spark plugs. Buick only has 30,000 miles on it.

2016 Buick Encore poor gas mileage

davepsinbox_157004 October 29, 2019, 8:37pm 6

True. I had the original plugs replaced at 110K and didn’t notice an improvement. One possibility is low tire pressure. Have you checked your tires lately?

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2016 Buick Encore poor gas mileage

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