I assume if you are comparing the Dart to the EPA esitmates you are only using 91 octane gas or higher right? You have been asked this a few times but never respond. The EPA esitmates are based on using 91 octane gas. Previous posts stated you used 87. So what is it?
Given the lead feet driving your cars, I think you're doing very well. Remember that the average speed in the EPA highway test is 48 mph; something tells me you're not abiding by that protocol.
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