Optimum Rev Range Diesle VRS + Your Average MPG

[andymcpherson24]

Just had my PD Diesel VRS for over a month now and with it been my first diesel the way it drives is totally different to a petrol. Roughly what is the most optimum rev range for max economy/efficiency?? Obviously the more revs equals more fuel but on the other hand drivng in too high a gear makes the engine struggle and again uses more fuel

Secondly, I do a 30 mile trip to work combining town, single carraige way and dual carraigeway. On that journey I get between 40-45mpg. How does this compare to everyone else?

Will look forward to your comments

Andy

[Nick P]

spritmonitor.de stats for octavia vrs tdi - mean for all manual VRS TDIs is 43mpg.

[Nick P]

Roughly what is the most optimum rev range for max economy/efficiency?? Obviously the more revs equals more fuel but on the other hand drivng in too high a gear makes the engine struggle and again uses more fuel

Well there's not really a simple answer to that as it's down the load really isn't it? e.g. I'm on the level, not accelerating I can be in 6th at 35mph, sub 1000rpm without stressing the dmf or other parts, but if I wanted to accelerate away or come to a slight incline I should change down to maintain fuel economy and not stress the car. I think you just need to be sensitive to what the engine sound / vibrations etc are saying.

[rsbspt]

A re-map significantly opens up the useable rev range...

[andymcpherson24]

Well there's not really a simple answer to that as it's down the load really isn't it? e.g. I'm on the level, not accelerating I can be in 6th at 35mph, sub 1000rpm without stressing the dmf or other parts, but if I wanted to accelerate away or come to a slight incline I should change down to maintain fuel economy and not stress the car. I think you just need to be sensitive to what the engine sound / vibrations etc are saying.

So is it safe to cruise/drive sub 1000rpm without doing any damage to car/putting it under to much stress?

[czechsmasher]

Hi,

The wife does a similiar trip 5 days a week to work, its coming back between 45-49.5 and she drives it faster than me!

Edited 15 May, 2009 by czechsmasher
space inserted

[Genoa1893]

So is it safe to cruise/drive sub 1000rpm without doing any damage to car/putting it under to much stress?

:eek::eek::eek: sub 1000rpm seems to me really too low rpms!

[fireftrm]

Similar journey here too, average around 52 mpg, rarely keep in any gear above 2000rpm. Long dual carriageway journeys at 70 mph with cruise control on 55+ mpg.