Donate SIGN UP

Petrol economy and wear and tear.

Avatar Image
Potatoman | 23:08 Thu 12th May 2005 | Motoring
2 Answers
Is 56mph really the most economical speed for a car like what i keep hearing? I have a 1.4 litre Peugeot 206 LX. What is the rough difference in petrol consumption from 56 mph anf 70 mph? Is wear-and-tear significantly more at 70mph?
Gravatar

Answers

1 to 2 of 2rss feed

Best Answer

No best answer has yet been selected by Potatoman. Once a best answer has been selected, it will be shown here.

For more on marking an answer as the "Best Answer", please visit our FAQ.

It depends on whether the car manufacturer has designed their car to be most efficient at 56 mph.  It comes down to gear ratio and how the engine performs whilst in top gear at around 56 mph.  This is generally the speed that is accepted as the 'standard' commuting speed. 

Obviously other things are to be taken into consideration such as car load (passengers), roof racks, wind, gradients etc.

The most economical speed to run a car at is the speed at which the engine will support the highest gear.  This is because the slower the engine is turning the less fuel it uses.  It is true that at certain revs engines produce the most efficient power per rev but I believe that it does not gain enough in efficiency to warrant a higher speed to become most fuel efficient, I could be wrong......

1 to 2 of 2rss feed

Do you know the answer?

Petrol economy and wear and tear.

Answer Question >>

Related Questions

Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.