Those of you bored enough to read my other posts may be aware that I've chopped my CR110 2WD Yeti in for a near identical CR170 4WD version.

Quite a concern since the change had been the noticeable difference in fuel consumption, however yesterday was quite informative.

Most weekends I collect my elderly father and bring him to my place for Sunday lunch. He lives about 30 miles away. He doesn't like to go fast. He doesn't like bumpy country lanes.

A consequence of this is that part of my journey tends to be quite sedate, and the other part less so, though typically I'm driving to the speed limit rather than hammering along.

Over the last few weeks in the CR110, I've been recording 55ish on the maxidot for the journey with dad, and 45ish for the journey without.

Yesterday, in the CR170, I recorded 58 one way and 49 the other. Not bad at all.

Unfortunately, on my early morning 30-limit run into work I'm only getting mid 30's rather than high 40's, but as that's only a few miles I can live with that if the distance miles are ok.

Isn't this just a variation on the familiar theme though? You only get decent MPG if the engine is properly warmed up (with a cold engine, the MPG can be pretty awful). For whatever reason, diesels seem to take significantly longer to warm up than petrol and so on frequent shorter journeys, diesel MPG can be very disappointing (quite apart from any potential DPF issues, though that doesn't seem to be too much of a problem with the Yeti). So for economics of diesel vs petrol, it's not just total mileage that's important, it's also average journey length from cold.

I expect so. I doubt cold oil in the Haldex helps in this regard.

I'm just pleased that on longer, sensibly paced runs that consumption is pretty good.

I've noticed that at say 60 kph (~37mph) in 5th I get a read out of sub 4L/100km as an instant readout and am wondering at what speed the actual lowest consumption per 100km would actually be.

I thought 6th would get better economy.

Isn't this just a variation on the familiar theme though? You only get decent MPG if the engine is properly warmed up (with a cold engine, the MPG can be pretty awful). For whatever reason, diesels seem to take significantly longer to warm up than petrol and so on frequent shorter journeys, diesel MPG can be very disappointing (quite apart from any potential DPF issues, though that doesn't seem to be too much of a problem with the Yeti). So for economics of diesel vs petrol, it's not just total mileage that's important, it's also average journey length from cold.

But Gyp is comparing 110 diesel 2WD with 170 diesel 4WD, over the same journeys and same driver/driving styles so the comparison is more meaningful, I would have thought?   Hence it's not so surprising the extra weight, transmission drag, etc. is having a bigger effect on short, cold runs than longer, properly warmed up journeys. Just interesting to actually quantify that expectation.

 

I'm impressed in particular with the 30 mile run comparison. The 170 coming up better by a worthwhile amount.  Interesting (for nerds like me!).

My 170 is returning around 40-42mpg at motorway cruising speeds. But it drops like a stone when used in traffic / around town - down to low 30's.

 

Fortunately most of the work it will be doing is on the M-way. It's only done 2000 miles so far so I'm hoping it will continue to improve as it loosens up.

My 170 is returning around 40-42mpg at motorway cruising speeds. But it drops like a stone when used in traffic / around town - down to low 30's.

 

Fortunately most of the work it will be doing is on the M-way. It's only done 2000 miles so far so I'm hoping it will continue to improve as it loosens up.

 

My 170 is also returning around 40mpg, having done about 2300 miles in the 3 weeks I've had it. I am hoping for better in the future but as my driving is 90% motorway and I am not light footed I'm fairly happy. I wonder when the engine is going to get to peak looseness?

We have had our 170 yeti for 3 weeks now and the MPG isn't far off our old car 2012 Octy VRS Cr tdi, it's seeing and average 45mpg, with me not hanging around the wife has seen 50mpg.

Thought I'd update this thread for my fellow MPG nerds, now that I've had mine for 2 or 3 weeks.

It's a 2011 CR170 Yeti, just about to hit 30k miles. 

 

I've covered over 1000 miles in it now, and have recorded the usage via Fuelly since I got it.

Roughly 75% of my driving is on hilly, twisty rural A-roads, typically 50-60mph speed limits, the remainder is more urban driving.

 

MPG for the first two tankfuls:

MFD figure: 47.8 and 48.0

Actual figure: 43.3 and 43.7 (latest average will be in my signature)

 

So the MFD is quite optimistic, I gather this can be calibrated via VCDS so will have to read up on that.

 

Currently, the actual running average is about the same as I got from my Focus (a 2.0 TDCI 136), which was a lighter car, less powerful, and only 2wd so less drivetrain loss.

So it's not too bad.

 

Where the Yeti does differ is how drastically the MPG drops off with higher speeds or any touch of enthusiastic driving...

Muddyboots - would you like to give us a hint to your location in your Profile?  It would give us an idea of the local terrain.

Muddyboots - would you like to give us a hint to your location in your Profile?  It would give us an idea of the local terrain.

 

Buxton is roughly the centre of my 40 mile Peak District commute

As mine passed 6000 miles, it has noticeably improved fuel economy - almost like flicking a switch - beforehand I was getting 38mpg on the maxidot, and after I'm getting 44mpg.

 

And bizzarely, I find my maxidot is pretty close to being bang on - my own brim>brim calculations are showing a +/-2% variance around the recorded average.

I'm up to nearly 7000 miles now and am averaging just a shade over 40mpg (calculated by fuelly.com). Not sure what the maxidot is registering as I inadvertently reset it at some stage. Most of my mileage is up & down the M40/A34 at an average 70 to 80 mph, so I guess it's not too bad. Certainly better than my previous car, the much loved Seat Leon Cupra.

Certainly better than my previous car, the much loved Seat Leon Cupra.

 A fellow ex-SCN'er I presume

 A fellow ex-SCN'er I presume

Yes indeed! I even had the sticker on the rear windscreen 

Mine's averaging about 45.5 according to Fuelly. It's a bit over a year old and has done 16,000 miles. Ish. My commute is a mix of a bit of motorway, some B roads, a couple of faster A roads but is a bit stop-starty, so on smoother journeys the display quite often tops 50mpg.

I find the biggest influence on my mpg is wind direct.. into the wind it drops considerably. It's like driving a brick.

Not sure what the maxidot is registering as I inadvertently reset it at some stage.

 

The maxidot resets itself at around 5000 miles or so.

I've had my 170 Elegance since October '12, just gone over the 19k mile mark & using the two-channel option on maxidot, has averaged 42.6 mpg from new. It's mostly used on lots of unclassified, B-roads & minor A-roads & occasional dual carriageway, our nearest motorway is 50+ miles. One big difference I've noticed is between the use of supermarket & branded premium fuel. I try to fill with premium at least every 4 or 5 tanks, but when there's a price war between the major supermarkets, it's difficult to turn down a big discount. Difference can be as much as 5 to 6 mpg improvement with the higher cetane number premium brands. Anyone else noticed a similar difference, it would be interesting to hear?

Yes indeed! I even had the sticker on the rear windscreen 

Snap

 

I find quite a difference between the Yeti forum on here and the Ibiza Mk4 forum on SCN...don't think I've seen any "Can I fit a wooshy dump valve to my Yeti" posts yet

I'm getting around 43mpg so far which I thought was pretty good, seeing as the engine is still running in

 

That's been over a mixture of clear and congested motorways, faster A-roads and local roads.

 

That's a Maxidot figure; will do a couple of brim-to-brim tank calcs as the miles roll by, then adjust the accuracy if necessary.

I am finding that my consumption varies massively based on the level of enthusiasm in my driving.

On my regular run mentioned in my original post (which is a hilly mix of a little 20/30 mph urban, dual carriageway, A, B & unclassified roads), in addition to my 58mpg all-time best, I can now record a 30.1mpg all-time worst.

Of course, on the latter trip, the average speed was north of 60mph, whereas the earlier one was elderly-passenger-friendly.

That's always going to happen though isn't it?

Economy being directly related to how much of the 'loud pedal' you're using

On the Dubrovnik Road Trip, TIBET III (still a youngster starting the trip at 1800 miles) averaged 41.4 mpg based on odometer mileage and actual fuel put in.

 

Maxidot showed 43.1 mpg. This was over 2913 miles and at an average speed of 54 mph, mostly motorway driving.

 

TIBET I and II both averaged low 40s 'true' and Maxidot is pretty much always 1.5+ mpg on the happy side...

Run a VW R32 for a few years and then change to a diesel Yeti. I can guarantee you won't care a monkeys about

what mpg you are getting with the Yeti!!