Tuesday, November 8, 2011

Is Fuel efficiency strictly a function of RPM or is it speed+gear+RPM?

Is Fuel efficiency strictly a function of RPM or is it speed+gear+RPM?

My ikon returns the best mileage figures when driven at 80 kmph in 5th gear which translates into approx. 2000 RPM. In 4th gear, 2000 RPM translates to approx. 60 kmph and in 3rd gear it is approx. 42 kmph.

Would I get similar FE figures if I drove the car at 80 kmph in 5th gear or 60 kmph in 4th gear or 42 kmph in 3rd gear or would it vary at different gear/speed combos assuming RPM is maintained at 2000 RPM?

Thanks in advance.

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