...once exported?(different cat,mapping?)? Why does my 2001 BMW 325xi for US market (17/23mpg) burn considerably more fuel than the same car for EU market(23/28mpg)? Same question for many others... Toyota Matrix for US and the same car in Canada, etc....(check web sites...) I will be shipping my US version of 2001 BMW 325xi to EU... While in EU last month, I drove the same exact car (but EU version) some 2500miles and was shocked by the difference/lesser fuel consumption of the EU model...Both cars in perect shape, tires inflated properly etc... At 10$/gal in EU, it makes me wonder how to make my US version burn as much as the EU version once it arrives to EU...Thanks for your (money-saving) help!