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New car fuel consumption


woolybanana

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First tests on the new Rio in mixed country driving give  3.8/100 which is about 75mpg. I hope this will improve with practice and as the engine beds down - she only has 220 on the clock as yet.

The gearbox seems remarkable and well coupled to the only 1100 engine. I am constantly urged to change up at 2000rpm but am not sure this is not a bit too early, though it may be more economical.

Start stop is a bit odd at first too but anything to save fuel.

The suppliers suggest running in to 10000 kms.

Plenty of space for the doggies.

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Could some of you tech savvy guys give me some thoughts please?

This car had a Stop and Start system which means that the engine cuts out if the car is stationary, the gear stick in neutral and the clutch up. But sometimes these stops are of very short duration and I wondered whether if it is not more fuel efficient to simply depress the clutch and keep the engine running under those circumstances ?

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Yeah I've wondered the same thing.  I recall Ford's saying that it was only worth turning off the motor if you were stopped for 4 minutes or more.  Mind you, that was years ago when engines were not so sophisticated and I may well have remembered it incorrectly.

Doesn't all that stop/start put a strain on battery/starter/etc too?

I guess the only way to find out is to drive for say a week with stop/start and the next week (on similar journeys) by keeping the engine running and see if there is an appreciable difference

(and before a smart person jumps in, I mean a week's worth of journeys, not driving for a whole week ....Jeez [:P]  )

 

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