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Old 11-16-2013, 06:50 PM   #18 (permalink)
Arragonis
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Whilst all of this research is great, it might also be worth noting the effect of oil etc. - makers have been known to submit cars with lighter engine and gearbox oil for test in the ECE (aka EU EPA) ratings. I would find it hard to accept that US makers / importers do not do the same thing.

My last car an Aygo was in the 20 car tax bracket for CO2 emissions, cars registered 6 months later were 0. The only difference was 0w20 vs 5w20 oil and perhaps several submissions for test until one made it.
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