Hi Everybody,
Most of you already know about the trouble I`ve had with the fuel consumption on my 2ltr tdi ...... after 5200 miles the most I can get out of it is around 35mpg, which is not very good after all the figures show an average combined at 47mpg.
The car is going back in next week to be put on the testers again, so we`ll see what happens then, but I would like to know what mpg you other eos owners are getting out of theirs.
I`ll keep you all posted as to what happens,
Julie

Hi Julie,
Got about 2600mls on mine and I am getting an average of 43mpg (trip 2), dont think anybody is going to get the VW published figures as these are normally calculated under ideal conditions, my last car was a Golf GT TDI which averaged about 45.5mpg but considering the weight difference between the golf and the EOS I am quite happy with the figures I am getting but have to agree 35mpg is on the low side.

pdog

52.7 mph. 6k miles on the clock. :)

After almost a year and about 14k 45mpg is about average. Obviously it depends on your driving style, cruising at 60 on the motorway will return a greater figure, but who wants to do that?.... not me for sure!

Also driving with the top down will mean less mpg as the wind resistance is greater.

All in all I consider 45 to be pretty good.

Hi Guys,

I have just introduced myself on a new thread asking about mpg. I have found in the past that our (the wife and I) style of driving knocks of about 15% from the offical figures so anything over 40mpg would be a bonus. I wouldn't be happy with mid 30's though so hopefully VW will get Julie sorted.

'Elan Sprint' What type of driving do you do, motorway, dual carriageways? 50+ is an excellent return.

Don

have the 2.0 FSI, not the TDi, and i've only just gone reached 40.7mpg (country roads), and 27 mpg on town driving. Car is almost 10 months old, but only done 3k tho - 5 months off driving thro injury!

My 2.0 TDI only has 850 on the clock but I am averaging 43mpg with a combination of motorway cruising, both top up and top down and commuting to work ( 40 miles per day in mixed traffic ) I am very pleased with these figures as they will get better as the engine loosens up.

My EOS is just a month old - 2600 miles and I'm getting 43mpg. That's based on mainly motorway cruising (M6 toll road for those in the UK - very empty). Where speed is limited due to traffic, running at around 45 - 50 mph can register very close to 50 mpg.

Hi julie how many miles are you getting out of a full tank, just thought you may have a faulty trip computer.

jason

Now got 10k on the clock and a whisker under 54mpg. Mixed driving, motorway and lesser roads; couple of touring holidays but hardly any town traffic crawling.
I do not hang about but do stick to speed limits, mostly. I've been driving diesels for years and have learned that pouring excess fuel through the engine just produces black smoke; you need a different technique from a petrol engine, just use enough fuel for the desired acceleration/speed and no more (you will go no faster with a lead foot). :D

Cheers,
Pete

43 mpg - only done 2800 miles - in 2 months. Keeps on getting better with the miles. Not as good as my very old MkI Golf Diesel - used to get 58mpg - mind you it weighed only around half as much and was incredibly noisy and NO power.

Hi all. My EOS is averaging around the mid 40's most of the time although like Elan Sprint '72 it did reach the dizzy heights of 52 mpg on a recent drive back from Scarborough to York. Its done just over 8000 miles now and runs like a dream. Hope you get yours sorted Julie.

Regards Trish

44 mpg overall. Very mixed driving - don't hang about but don't clog it hard in the intermediate gears either. I agree with the earlier correspondent who states that diesels need a different technique to get the best out of them. Best torque seems to be between 1800 and 3000rpm and with six cogs to choose from there is rarely any need to go outside those limits in everyday driving.

Good luck

Noel

Now that our Eos has reached 10,000Km, I have run the first definitive fuel consumption test for the MY09 TDI & DSG combination. The test was done in a mix of 80% country and 20% town driving with the climate control permanently on.

Distance covered: 842Km

Fuel used: 42.65 litres [Shell diesel]

Fuel Consumption: 17.67 Km/litre, 49.92mpg [Imperial], 41.56mpg [USA]

Who needs a hybrid with their inherent compromises when you can get this economy and performance as well http://emoticons4u.com/fingers/fing22.gif.

I have logged every tank since I got her - she now has 18200km on the clock.

The average over that whole time has been 6.57l/100km = 43.49mpg (imperial).

This is with a mix of freeway and suburban driving - it has varied by around 10% tank to tank - which is to be expected.

The trip meter is showing a long term average of 5.6l/100km, which is clearly optimistic.

I just tend to wonder whether I am tricking it by filling to the next whole litre, rather than stopping as soon as ther pump clicks off the first time.

........

I just tend to wonder whether I am tricking it by filling to the next whole litre, rather than stopping as soon as ther pump clicks off the first time.


I always fill the tank at the same pump to the first click - whilst this will not be absolutely precise, it will be accurate enough for my purposes.

I get an average of 26-31 from the V6. Does go down a lot with spirited driving but have got 39 mpg on a 250 mile run up to County Durham which I thought was good.
35 mpg for the tdi does seem a bit on the low side.
Tim

Unfortunately our Eos (which is now 4 months old) is being driven either rather short distances (just enough to get the water temp to the middle position) or, when warmed up, driven quite enthusiatically (without going overboard!!).

So, the current average after about 5,000 km is 7.2 l/100km, with a best of 6.5 which included some relaxed cruising, and a worst of 7.5. All in all not too bad but I can't wait to do a nice long trip in it (GOR Cruise: Bring It On).

As a side, my Passat (which has the 125 kW PD engine) is sitting on 6.8 l/100km after 40,000 km with more long distance driving (best just under 5.5!!). Not bad, I think, for this sort of car and engine.

Seeya,
Michael

Hi Michael

Are these calculated averages, or have you read them from the trip computer?

Hi Geoff,

All calculated. Here's what I do:

Fill the tank (if possible always the same servo and same bowser) all the way. Takes a little time due to the foaming.
Take all the readings from the trip computer (distance, average speed, fuel economy).
Enter in my spreadsheet (using Numbers, a Mac-only, slightly more userfriendly variation on Excel) and my iPod using AccuFuel, including comments, fuel prices etc. Bit nerdy, I know, but I'm old enough to be nerdy and odd ;) !

It appears that the trip computer is optimistic by 5 - 10%. The actual odometer, using the calibrated distance markers available on some highways (e.g. on the NSW section of the Hume) is pretty much 100% accurate. Speedo is shows 104 - 105 when doing a GPS-measured 100.

Hope this helps.

Crikey - very impressed how seriously you Aussies take your economy motoring!

I have logged every tank since I got her - she now has 18200km on the clock.
The average over that whole time has been 6.57l/100km = 43.49mpg (imperial).

Uh impressed, I think I'm at about 7.2l/100km with my rather sporty driving style and aircon... Goes down to about 5l/100km when smooth driving on the highway or country side...
If consumption becomes a problem, I'd go for a BlueMotion version of the EOS... My wife's Passat does max 5.0l/100km and typicaly 4.2l/100km after over 54'000kms!!! And it's got some nerve!
Fred

Hi Geoff,

All calculated. Here's what I do:

Fill the tank (if possible always the same servo and same bowser) all the way. Takes a little time due to the foaming.
Take all the readings from the trip computer (distance, average speed, fuel economy).
Enter in my spreadsheet (using Numbers, a Mac-only, slightly more userfriendly variation on Excel) and my iPod using AccuFuel, including comments, fuel prices etc. Bit nerdy, I know, but I'm old enough to be nerdy and odd ;) !

It appears that the trip computer is optimistic by 5 - 10%. The actual odometer, using the calibrated distance markers available on some highways (e.g. on the NSW section of the Hume) is pretty much 100% accurate. Speedo is shows 104 - 105 when doing a GPS-measured 100.

Hope this helps.



Yeah, I use Excel for mine - my calculation adds all of the fuel put in from day dot and combines it with the odo reading at time of filling, giving me economy for the tank and CUM economy in mpg and l/100km.

I know its anal, but I do it with all of my cars - its not so much of an issue with Diesel, but petrol in Melbourne (and most larger cities in Australia0 varies on a 10% cycle every week, and rather than trust the fuel gauge, if you know what your car can typically do on a full tank, you can better time when you fill up.

My long term averages displayed on the MFD are usually around 6.3 to 6.5, and currently on 6.2 (Litres/100Km).
However, whenever I calculate it based on refilling the tank, I always find it almost 1 litre higher (ie 7.3L/100Km).
I generally get about 760km out of a tank, and that is almost 100% stop/start city driving.
And I'm a bit of a lead foot! :o

Snobbers averaged on 43.5mpg

Check your tyre pressures, ask VW to check the injectors as snobbers was buggered so had them re-done.

Steph xx

Just spent a long weekend and 600 miles in the mountains of Wales (that's a country in the UK next to England!), up hill down dale, lots of different terrains, even unmade roads, roof down the whole time - averaged 54mpg (but that does include the motorway drive home)

Fuel consumption figures from our recent cruise:

Distance Travellled: 1227.2 Km

Fuel Used; 73 litres [42.5 litres Shell, 30.5 litres Mobil diesel]

Fuel Consumption: 5.95 litres/100Km, 47.48mpg[Imperial], 39.53mpg[US]

The trip involved two different driving conditions;

Part 1: majority highway driving in hot humid conditions with climate control working fulltime. 716.4Km using 42.5 litres giving consumption of 5.93 litres/100Km.

Part 2: majority rural roads in mountainous country [by Australian standards, the rest of the world would consider them to be big hills :p ] in humid and extremely wet conditions with climate control on. 510.8Km using 30.5 litres giving consumption of 5.97 litres/100Km.

I was very surprised with these results as I expected the fuel consumption to be greater during Part 2 as the DSG used the lower gears more frequently. The humidity placed maximum load on the air conditioning due to the amount of water being condensed and removed from the incoming air on the "flow through" setting [I do not use the recirculation setting as I find the stale air makes me drowsy after several hours travelling].

No complaints at all with these figures - the economy/performance combination of the Eos continues to amaze me.

That's impressive.

I take it (MY09 should be a clear indicator) that your car has the CR engine.

The best I've ever done is just under 5.5 l/100km but that was in the Passat (125 kW TDI PD) going to Canberra and (almost) back to Melbourne. Haven't had a chance to really stretch the Eos's wings but the GOR drive yielded (from memory) around 5 l/100km according to the computer which, from experience, is up to 10% optimistic.

Interesting that EOSup is reporting an apparent decrease in fuel economy when driving in the rain. Not sure how to explain that but imagine the continuous dark cloud over your Eos had disappeared - you'd have broken all mileage records!!

Seeya,
Michael

That's impressive.

I take it (MY09 should be a clear indicator) that your car has the CR engine. YES
.................................................. .................
Interesting that EOSup is reporting an apparent decrease in fuel economy when driving in the rain. Not sure how to explain that but imagine the continuous dark cloud over your Eos had disappeared - you'd have broken all mileage records!!

Seeya,
Michael


Michael,

These figures are actual consumption measured the old-fashioned way with the trip meter and fuel pump delivery when refueling. I didn't bother recording the MFD readouts but will do so out of interest on our next long trip.

What is interesting is that 2 separate long-distance trips under very different driving conditions have given consistent results. The effect of the climate control system working under full load all the time to dehumidify incoming air using flow-through ventilation is to increase the fuel consumption by around 15%. Cycling of the A/C compressor under more normal conditions or using the recirculation setting would be expected to increase fuel consumption by around 5-10% depending on the outside temperature and humidity.

Until very recently I was getting over 50mpg average from each tank of fuel, with mixed driving, in my Eos Sport TDI. On occasions I managed over 60mpg average. However for the past few weeks my fuel consumption seems to have gone up. I am now seeing nearer to 45mpg. I am wondering whether this could be caused by the cold weather conditions. I've had the car about 16 months, and it's my first diesel. Up until recently I was really impressed with the fuel economy. The car was serviced recently, so I don't think there's anything wrong with it. Does the cold weather adversely affect fuel consumption in a diesel?

Until very recently I was getting over 50mpg average from each tank of fuel, with mixed driving, in my Eos Sport TDI. On occasions I managed over 60mpg average. However for the past few weeks my fuel consumption seems to have gone up. I am now seeing nearer to 45mpg. I am wondering whether this could be caused by the cold weather conditions. I've had the car about 16 months, and it's my first diesel. Up until recently I was really impressed with the fuel economy. The car was serviced recently, so I don't think there's anything wrong with it. Does the cold weather adversely affect fuel consumption in a diesel?

You'll find that the formulation for diesel that's currently being sold is slightly different to that available in summer to make it more resistant to "freezing", that causes the fuel consumption to increase slightly. ;)

If I am not wrong I would think you will also find a slight drop in mileage because at this time of the year you will be putting far more load on the vehicle, heaters, demisters, windscreen heaters, heated seats, lights on earlier for longer etc.

All this "extra" power drain has to be offset someplace.

D.

I would agree with the comment above, I too have noticed a slight increase in consumption and put this down to the abnormally low temperatures that we've been experiencing.

I have found that turning the heating off completely until the engine temperature gets up around 45 degrees appears to help as does keeping additional electrical kit like screen heaters and so forth to a minimum, I'm not too sure about the electrical kit but getting the engine up to temperature as quick as possible must be relevant. If I'm wrong then I'm sure someone will correct me (quite right too)

Thanks for the above comments. All seem to make good sense, but I have also done a bit of investigation, and I am very surprised to see that air filter elements are not replaced very frequently during routine maintenance. Replacement every 40,000 km seems inadequate to me. I removed the element to have a look, and sure enough it was filthy! So I will replace that myself and see if there's any improvement.

So, I have replaced the air filter. Very easy and cheap, and I don't know why it isn't replaced more frequently in the routine service schedule. However, the emissions warning light came on a few days later. I have since returned the car to the dealer who discovered a "faulty G450 sensor" which has been replaced under warranty. Fuel consumption has immediately improved. The cars now doing over 50mpg average per tank again.