cheapskate2003

Ive had my VRS about a month now and there is just one niggling fault..... my trip computer is completely inaccurate. 1st tank of fuel, average MPG on long term (not trip) recorded as 60mpg with the real figure being 46mpg - it wasnt me that filled the tank so could be some explanation. Second tank computer gives MPG as 55mpg (reset long term when tanked up) real is 45mpg. Its not my maths before anyone asks either!

Has anyone else noticed that their computer is as inaccurate as mine?

JohnnyE

My 05 vRS is not an inaccurate as that but still not perfect. I've done over 21,000 miles and have noticed that the average mpg consistently reads 2 - 3mpg over the actual.

Seems to be getting more economical as the miles pile on though, but I don't know whether or not that's just me driving like an old woman or not.

__________________
Warp speed Mr Sulu

andfit

Mine's almost spot on, less than 1mpg difference from actual.

Either mine is getting more economical as the miles pile on or I'm driving like an old woman too?! Hopefully its just the car... Mine has just hit 23,500 miles and recorded a personal best of 640miles from a tank. I can't fault that at all!

simonh9

Yes my 06 car is very poor as well - 53mpg trip = 45mpg actual. Pretty disappointing. I mentioned it to the dealer, but I don't think they even got to that point on the list of faults let alone reported it to Skoda.

Seeing as though it's linked, the range is overly optimisitic as well - normally indicates about 550miles full and manages to lose 100 miles from the range in the last half a tank or so.

cheapskate2003

Well I suppose im glad that im not the only one, my range is also optimistic by about 100 miles. For that matter the fuel guage itself is pretty bad, the last indicated half of the tank goes very quickly.

Happy with the car apart from that though, just on 1000 miles and I gave it full beans in third up to 4250 for the 1st time. My old mans 3.0 Honda Accord Coupe doesnt feel half as fast as it did!

HellFire

On a side note I hate it when the car shows as 500 miles on the trip computer because you've been grannying it then you boot it for 10 minutes and suddenly you have 300 miles left. Whilst I understand it's trying to calculate how many miles you'll have left at your current driving it a) does seem to drop very very quickly b) never goes back up to anywhere near what it was when you start grannying it again.

__________________

Metro Blue '06' 5 Door Astra 1.8 SRi

Greybeard

My 05 vRS is also not too bad.
Cross checked against fill ups it's usually within 1-2 mpg at worst.

__________________
GB
Corrida Red 05 Fabia vRS

ChrisRs

Watch it young man!!

Basil

I don't know it this helps, but if I understand it correctly you can fine-tune your computer using VAG-COM.

Essentially, you adjust resistance of the fuel tank sensor ( that indicates the tank current capacity) as follows (courtesy of Sebastian@openobd.org):

Controller adjustment

STG 17 (combination instrument) select
STG adjustment - > function 10
- > channel 30 (tank fuel sensor adjustment)
The default value is 128, adjustable in 1 ohm steps (range 120 - 136).

Once you have it just right, perhaps you could post the final value that you find correct for your particular car.
I don't know if this adjusts sensitivity/accuracy or just when it signals the tank is completely full.

I would try a post in the VAG-COM section, asking if Sebastian can suggest an better solution. Should be tweakable...

Cheers
Bas

__________________
Fab vRS - Black Magic - PD160 intake - Forge FMIC - colour coded front grille -SLC Splitter - K&N Airfilter -SEAT Strutbrace - Jabba ARB - IC Waterspray (need to wire it in!) - 312mm TT brakes - Eibach Springs - Skoda Reversing sensors - Devonutopia Tuning (tm) Custom Exhaust (2 1/4" straight pipe) - Short shifter mod- 5 brake light mod - Helix Steel SMF + Organic Clutch + pressure plate - Peloquin LSD - TD stage 2 Hybrid - Washbrook remapped ECU - Uprated injectors - Cupra bushes -Poly-filled dogbone - Allard racepipe - Pirelli Dragons - Forge Rear Strutbrace - DIY SS upper boostpipe delete -Koni FSD's - elephant pipe CCV mod

ffvrs

I've raised a thread about this before. My 06 fuel economy is pants but there was another contributing factor which has hopefully sorted this out now.

It's still overally optimistic though, from fill up it says I should see 510miles. I think I get around 300 if I'm lucky. 45mpg is my average at the moment.

I'm assured once the engine is run in things will get better.

__________________
Cheers

Carless

Neily03

300 miles to a tank?!?!!? I can get 350 to a tank in my CTR!! Granted the tank is 5 litres bigger than the vRS but mines a 197bhp petrol engine!!

You must do a lot of short trips?.....

I had an '06 vRS for a day long test drive, it had only done 1100miles iirc. When i picked it up I reset the computer and when i took it back i'd done 180miles and averaged 54mpg.... thats doing the same sort of driving as i do in my CTR in which i average 30-35mpg.

__________________
Black Magic MY07 Fabia v/RS with Cruise, Xennons, Heated Seats, Dension Ice-Link+, Aero wipers & Jabba RARB.

jpb2001

My 06 VRS also has a very inaccurate trip computer - it is between 6 and 9 mpg out from the correct figure. When I fill up it says I've done 56-59mpg but the true figure is more like 50mpg. I'll mention it to Skoda when I take it in for its first service along with the other issues (stutter and creaking clucth pedal).

Incidentally, I've covered 9100 miles and average 450 to a tank.

Cheers,
JB

WW_VRS

300-350 miles is not that uncommon for me, and that is with motorway driving at some pace admittedly. I can hit much better figures if I stay below 70mph (and I mean below) or now I've got LPG fitted, easily do 400 miles/tank driving in a similar manner to 300-350 miles/tank before.

__________________
WW --->> Project Journal (pic links in first post there)
Lummox'/Ross thread on Unit18 Automotive progress on my car: here

ffvrs

I know I get 40mpg at least on my 06.

Doing 90mph on the motorway makes the motor thirsty. Suprising when compared to a 1998 Astra 1.7TD I have access to which can get easy 47mpg doing the same speeds.

__________________
Cheers

Carless

cheapskate2003

Had my first proper long trip in my 06 Furby today, 280 miles round trip and I took it very easy all the way. Trip computer showed an average of 81mpg for the whole trip, that would have been very nice but I cant say that I was disapointed with 60mpg when I calculated it properly!

Have a laugh at this

Not a Diesel!!!

Yeah my 55 plate reads +60 MPG all the time.

Economy slowly getting better but has not bettered 50 MPG when calculated.

Now at 7k Miles.

Timewarp

50 litres vs 45 is not 5 times bigger! Good work on mileage though, I only ever managed 250 miles per tank in my CTR.

__________________
2005 Black Fabia vRS
160BHP tuning chip | K&N panel filter | tints | sub | Alpine iDA-X100 | Alpine Imprint

WaveyDavey

Have an 05 and 06 vRS and get around 500 miles to a tank in both..... Also the mpg readout isn't too far off on both either.... a couple of mpg or so on both.

Expected miles always seems to be about right on both and goes down steadily from mid 500's when just filled up all the wqay down to 0 miles once or twice.


My figures are for using the famous ventectomy method and filling the expansion tank on each fill up.




Cheers

Dave.

__________________



2006 'Black Magic' Fabia vRS... With a few little EXTRAS

glendo86

my 06 Vrs also seems to be out by quite a long way on the trip computer. i tend to average between 50-55mpg according to the computer but i barely get 400 miles to a tank. i've never worked it out properly but someone on another thread figured i must be averaging in the low 40's with the mileage i'm getting. seems to be a common thing with 06's, has anyone queried it with a dealer yet and if so what was the outcome?

Timewarp

What's that then??

__________________
2005 Black Fabia vRS
160BHP tuning chip | K&N panel filter | tints | sub | Alpine iDA-X100 | Alpine Imprint

WaveyDavey

Do a quick search on ventectomy in the fabia mk1 forum.......


A quick run down though..... There are two methods one full method which reqs taking the fuel filler inlet to bits (see the proper thread fopr a how-to) and the other which i use is to fill up as normal then when full use the pump to hold in the little switch/nipple on the right hand side of the tank inlet you'll hear the air escape from the expansion tank allowing you to put an extra couple of gallons in whilst holding the switch/nipple in.




Cheers

Dave.

__________________



2006 'Black Magic' Fabia vRS... With a few little EXTRAS