Report suggests that not following good eco-driving practices can lead to a reduction in on-road fuel economy of up to about 45% in total
Green Car Congress
SEPTEMBER 8, 2011
Factors related to vehicle maintenance that impact fuel economy include engine tuning, tire selection and maintenance, and weight of engine oil. On a related note, the average adult in the US in 2002 was about 24 pounds heavier than in 1960, resulting in a reduction in fuel economy of up to about 0.5%.). Improper engine oil.
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