Official Fuel Economy Thread (formerly Highway economy).

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Not high for the Moreton trip Jim, I would expect at least that or worse. Buggered if I can get that sort of milage on the road though.

[jimbomort]

Not high for the Moreton trip Jim, I would expect at least that or worse. Buggered if I can get that sort of milage on the road though.

Hmmmm - try a road trip with the cruise set to 100 and no air con. If its 1.5 or more hours you should get down to high 6's or low 7's, unless its quite hilly or the like or you have gone hard when not cruisng.

We just averaged 7.1 (MFD, so conservatively 7.4 real) with Tig loaded to hilt with roof box etc, a small bit of 4wd work and with going through burbs and centre of Bris for 20-30 mins (to drop into fortitude valley). Would have been closer to 7.0 real, if we didn't do the city work.

[vncharan]

I got my new tiguan doing 6.9Ltrs after driving 3020KM. Is its good economy? But iam surely impressed at this achievement.

[jimbomort]

I got my new tiguan doing 6.9Ltrs after driving 3020KM. Is its good economy? But iam surely impressed at this achievement.

is that per MFD or actual? If real that's good as an average for an auto with low k's, if mostly hwy about what you'd expect. The TDIs are more economical, my figs above your post are for remapped TSI, which can be quite good too, especially on the open road, but not as good as the TDI. I've got down to 6.9 actual on some trips with the TSI (manual) but our average of all driving is more in the low 8's.

enjoy, the diesel tigs are very economical, you should be able to get into the high 5's on open road trips with the TDI auto once its bedded in, lower if you are really economical

[mojo]

Went for a drive up to Gladstone and back over the long weekend - just over 1000k's all up. Economy on the way up according to the MFD was 5.5l/100km, and 5.8 on the way back - stuck pretty much to the speed limit on the way up, and just a bit over on the way back. Pretty happy with those figures. We could have almost done the trip on one tank, but filled up just to be safe.

[team_v]

I can average 8l/100km on the highway but it hasn't been properly worn in yet.
Actual average of normal driving is around 10.5 at the moment as i keep testing out APR stage 1.

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Went for a drive up to Gladstone and back over the long weekend - just over 1000k's all up. Economy on the way up according to the MFD was 5.5l/100km, and 5.8 on the way back -

why on earth would anyone buy one of those horidly expensive and production poluting hybrid things when you can get that sort of economy from a diesel that has some performance!

[mojo]

Just worked out my economy based on the fuel pump litres and the trip meter, and it's 6.4l/100k. I would guess the MFD figure would be more accurate?

[jimbomort]

Mojo, no actual is what you get, MFD is an approximation. Of course actual requires filling to same point in tank, accuracy of pumps etc, so can be a bit out. Your calc looks a bit high relative to the MFD in my experience.

Ours is a manual TSI. Testing over 5-6 tanks, has shown that the MFD in ours is consistently about 0.2-0.3 l/100 under actual (ie so slightly optimistic). Your calc looked at least 0.6 more than your MFD (wasn't sure if 6.4 was av for whole trip or just the return leg).

You should be able to get into the mid 5's with a manual TDI on hwy trips. At the speed limit (100) without air con, I have often got into the high 6's (ie 6.7/. with our TSI per MFD and occassionally lower. Driven very economically I think even the TSIs could get into the high 5's and TDI's I would think into the high 4's. However by very economically I mean travelling at a steady 85-90, and no air con, not practical for hwy driving or long trips. Travelling at a steady 60klm/hr in 5th might get even lower, but that is nuts.

There is no doubt the TDIs are very economical and the TSIs are quite good too considering - enjoy

[Transporter]

Just a word of caution on TDI driving for the best fuel economy all the time, especially the manual ones!

Remember that the dual mass flywheel (DMF) doesn't like to be driven in low revs in highest gear.
VNT Turbocharger needs good 3/4 - full throttle once a day to keep variable vanes clean (they can seize-stop moving when driven seductively).

Any of the above will cost you a lot more than you saved on fuel.