Can I modify my car to save fuel?
A local company says it can adjust the fuel use of my Citroen C5 6 spd, 2.0 HDi, upping it 10% without risking any parts. I'm a slowish driver, mostly 2,000 rpm and have the car in eco, whatever that does. She does around 45mpg, maybe less if I'm pushing it along on the motorway. Chipping is another thing which might improve it. Any suggestions, including leave well alone?
Asked on 15 January 2024 by farmideas
Answered by
David Ross
We would be sceptical of any claims regarding fuel consumption improvement without risking any parts unless it is an engine remap or 'chipping' process. 45mpg or more for a car of this size is good, and most drivers will get save fuel by careful driving, ensuring their car is well maintained, has the correct tyre pressures and is free from any extraneous weight. A remap may improve fuel economy, but will require a significant financial investment and will also require you to decare the modification to your insurer with a resulting increase in your premium which could easily outweigh any potential fuel savings.
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