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Old 09-09-2014, 11:36 AM
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Why Do Euro Diesels Get Such Better MPG's?

I have driven a BMW Diesel in Germany and it seems the MPG's were somewhat higher than the US diesels are capable of. Does anyone know exactly why this is? Is it restrictive exhaust emissions? If so, can the US diesels be matched to the Euro ones to get like MPG's? Hypothetically, if one were to remove the CATS where no emmisions testing is required, could the X5 be coded to work with no CATS and achieve better MPG's?
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Old 09-09-2014, 11:57 AM
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Imperial gallons are larger (by a factor of 6/5) so mpg will always be higher outside of the US. Or were you using litres and converting to US gallons?

Or are you comparing published numbers? If so, the test cycles and adjustment factors applied to the results are completely different.

I wouldn't be removing emissions controls to try and improve mileage.
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Old 09-09-2014, 01:23 PM
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Converting liters to gallons and KM to miles so it was a true comparison.
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Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming: "WOW! WHAT A RIDE!!"

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2018 Chevy 2500HD Diesel Alaskan Edition
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1972 Ford F-600
1959 Chevy Viking 60 Dump Truck
2015 CanAm Outlander XT 1000

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Old 09-10-2014, 08:06 AM
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They also sell Premium diesel fuel...
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Old 09-10-2014, 11:00 AM
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It's because Germany has better beer.
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Old 09-12-2014, 11:10 AM
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Quote:
Originally Posted by Lambeau View Post
Converting liters to gallons and KM to miles so it was a true comparison.
Well, what were the numbers?
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