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Old 09-02-2012, 10:54 AM   #5 (permalink)
1.4 hdi men
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Quote:
Originally Posted by ecomodded View Post
I find 5th gear to be the most economical, but i have heard that 4th gear at slower speeds is more economical. Could be that high gear put added strain on the motor / drive-train and robs some hp / torque causing it to use more fuel to do the same work.
In my experience, I confirm: In the fourth of about 50 km / h my instantaneous consumption ranges (a steady speed) 2.5 - 2.7 Km Lts/100 But at the same speed in fifth, no less than 3. And I do believe that in my case, it happens as you say, the fifth steals "too much" power to the motor (more power than in the fourth). I guess it's like riding a bike a pinion too high forces us to give more force than is reasonably necessary for driving at sustained speed.
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