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Old 23-06-2015   #1
Join Date: Mar 2015
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Fuel Economy

Hi Guy's,

I was wondering if anyone had any suggestions or experiences in trying to get a few extra mpg out of their 1.9 8v Multijet?

I absolutely love my Bravo & I do around 2k miles a month on poor A, B & unnamed roads I'm averaging 46.6 mpg which is respectable for the engine I admit but it's still 60 a week (I gotta eat too!)

Firstly has anyone had any luck with remapping for efficiency? & what where the drawbacks as I still want to thunder over the moors & not crawl up the hills,

Secondly I know it's an old one & I know you can do it with older engines but would my motor be suitable to run on biodeisel (refined chip fat)? Or is it too modern?

Lastly any other ideas welcome nothings too crazy!!! Except changing car!!!

Thanks Guys!
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Old 23-06-2015   #2
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Re: Fuel Economy

Remap gave my 1.9 16v 20% more economy and 30% more power. I used a variable electronic tuning box, but a 'custom' map may be more refined.

Other option is a fuel additive called Millers Diesel Ecomax. It costs about 10 for 500ml (10 tank fulls) depending on what size you get. I've found it makes the car smoother, more responsive, gives more power and boosts economy by about 10% - so more than pays for itself.

I've no experience of the alternative fuels - could be expensive if it goes wrong.
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Old 24-06-2015   #3
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Re: Fuel Economy

With remap u can get better mpg but you must drive normaly, if you drive harder, then your consumpiton will be higher, in the end with remap you will have the same mpg like before.

My average mpg (city driving 30%, local 30%, other highway) with 8v mjet is around 49mpg. If u have more city driving then you mpg is normal.

Maybe u should try to clean map senzor and check tyre pressure and every year oil and air filter change...in the and for better economy u have to drive more economic, any other aditive is waste of money.
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Old 24-06-2015   #4
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Re: Fuel Economy

Quote Originally Posted by Blobbyman2003 View Post
Hi Guy's,

I was wondering if anyone had any suggestions or experiences in trying to get a few extra mpg out of their 1.9 8v Multijet?

I absolutely love my Bravo & I do around 2k miles a month on poor A, B & unnamed roads I'm averaging 46.6 mpg which is respectable for the engine I admit but it's still 60 a week (I gotta eat too!)

Firstly has anyone had any luck with remapping for efficiency? & what where the drawbacks as I still want to thunder over the moors & not crawl up the hills,

Secondly I know it's an old one & I know you can do it with older engines but would my motor be suitable to run on biodeisel (refined chip fat)? Or is it too modern?

Lastly any other ideas welcome nothings too crazy!!! Except changing car!!!

Thanks Guys!
With the same engine as you, over 7 years of ownership, 69,995 miles 6429.2 litres of diesel,, I have averaged 49.43mpg. That is about 50% of 9.1 miles to work and 9.1 miles home, a couple of shorter trips a week, and the rest made up of longer runs of 80 to 300 miles.

My mileage is not on "poor A,B and unnamed roads", but I will try and find a more interesting route rather than queue round Birmingham or the M1/A14 interchange roadworks. Overall, 46.5 doesn't seem bad for what you are dong.

I do feel that for best economy, you are best off doing about 2000rpm whatever speed you are doing, and choosing the appropriate gear. That keeps the turbo working nicely.

BTW, 5 more tanks of diesel, and I well have spent more on fuel than the car cost me in 2008!!!!
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Now Kia Ceed Sportswagon GT-Line 1.0 TurboGDi
Hers: C4 1.4SX -still looking for the Robot button - Gone - Now Kia Ceed hatch 1.6GDi

Last edited by neilshep; 24-06-2015 at 08:44. Reason: AFTERTHOUGHT
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Old 24-06-2015   #5
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Re: Fuel Economy

Thanks for all the reply's guys it's nice to know that my consumption is pretty average, I've already given it a full service & I check the tire pressures weekly so other than that theres probably not much I can do as I know for a fact if I had it remapped I couldn't resist putting my foot down at least the damage is limited at the moment lol
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