110 tdi mpg

[brad1]

hi there
since having my tdi 110, ive had it mapped etc, tried it on a full tank and driving very carefully hardly over 3000rpm and could only just manage under 400 miles to a tank
i dunno what i could change or do to improve this or is this what i should be getting????
any ideas guys
car is runnig fine tho

 

[sssstew]

too many variables, ie weather, type of road, traffic conditions etc.

brim the tank, take it on a long drive (ie over 100 miles is good) then fill again, or check onboard computer (less a few cause its in-accurate)

 

[glynnd]

After I had mine re mapped it went crazy on fuel for the first 100 miles and I got about 420 to the full tank. Seems fine now though and I can get 550/600 since it was done
Glynn

 

[Nathanio]

What diesel are you using? What type of driving do you do? What size alloys and tyres do you have? Do you use any fuel additive?

 

[brad1]

i use normal shell diesel and do alot of round town driving, but it just seems like my fuel gauge just drops rapidly but i have managed 400 miles on a tank before dunno what i can do to get more, additives etc

 

[stuart86]

550/600 i still stick to the point that some people must be pushing there cars along

i get around 350/400 normally

 

[Nathanio]

650miles is easily done if the conditions are right.

When I lived in portsmouth I was lucky to get 450miles to a tank due to the stop start nature of the driving. I now live further a field and do 60m round trip to work on some B roads and mainly A roads doing between 40 and 65mph on the cruise.

On the other hand, SWMBOs vRS doesn't do great MPG due to her doing a journey into worthing in stop start traffic. I can get roughly an extra 5mpg on a trip in the same car if I took it.

 

[sssstew]

i use normal shell diesel and do alot of round town driving, but it just seems like my fuel gauge just drops rapidly but i have managed 400 miles on a tank before dunno what i can do to get more, additives etc

its the lot of town driving that kills it then

 

[glynnd]

i use normal shell diesel and do alot of round town driving, but it just seems like my fuel gauge just drops rapidly but i have managed 400 miles on a tank before dunno what i can do to get more, additives etc

Use the instant mpg indicator to get the best you can unless you are having fun

 

[JamesL]

too many variables, ie weather, type of road, traffic conditions etc.

brim the tank, take it on a long drive (ie over 100 miles is good) then fill again, or check onboard computer (less a few cause its in-accurate)

My 110 doesnt have an on board computer??

 

[glynnd]

Sorry I didnt know that
Millers always gives me 2/3 mpg more but I usually double dose it
Glynn

 

[Nathanio]

brad are you running larger, wider alloys?

 

[brad1]

my alloys at the moment are standard 16" but hoping to get 18s soon and lower 40mm, will bigger wheels drop mpg then alot

 

[Nathanio]

Wider with lower profile will due to the fact you have more surface in contact with the road thus more friction.

I suspect it is more the fact you do town driving is why your MPG is low

 

[JamesL]

I was thinking on my excessively long journey to work the other day (stupid traffic) that, similarly to a car having peak power/torque, would a car have a peak rev range for economy? or is it basically as low as the car will rev happily without stalling, basically?

 

[Nathanio]

For TDIs it is generally the point where the turbo is whistling. For me 65mph 5th gear (2100rpm) gives the best for me

 

[allh2k]

Ive not filled the tank for a while but im sure the cars not doing to well on teh mpg's missus has just started a stop and start job so thats killing it!!

just change the fuel filter and will be checking/replacing the maf soon hopefully will make a few more mpg's

I just wish I bought a 130 with 6 gears and ALOT better economy whats the insurance group of a 130?

 

[Nathanio]

I have found the 110 is better in and around town as the smaller turbo gives it an edge as it spins up sooner. Also my 110 copes much better lower down the rev range than liz's 130. On the motor way mine is currently much more economical as well but mine has much more mileage on it. I have found a 10-15% increase in MPG as my mileage has gone from 50 to 80k

 

[JamesL]

130 is insurance group 10 as opposed to the 110 group7

 

[sssstew]

I was thinking on my excessively long journey to work the other day (stupid traffic) that, similarly to a car having peak power/torque, would a car have a peak rev range for economy? or is it basically as low as the car will rev happily without stalling, basically?

the general principle is to try and stay it peak torque levels for best economy, this for the tdis ranges from 1900, so like nath says 2100 will be good for him, from my experience keeping the revs been 2k and 3k is best whilst accelerating but once settled into a cruise you can put it into a higher gear and drop them down as low as 1600 and it still be ok if the road is flat, if approaching a hill then a down change to get the revs up a bit so its not labouring will provide better econmy.