The heatwave you folks in the UK are experiencing these days has hit the news here.We understand the temperature may rise as high as 35 C in some areas this week...Anyway, not to worry. Your Yeti will perform flawlessly.Here where I live the minimum temp at midday is 36 c (always measured in the shade , btw) and does go up to 44c. My Yeti shows no strain whatever,the temperature guage doesnt move upwards the slightest bit and the oil temp never goes up beyond 110 c even when pushed on a very hot day.

Now is the  time to enjoy and appreciate your A/c unit .Mine is on by default so to speak, 24/7 set at 23c and will cool the interior in a matter of a couple of minutes even during extreme outer temperatures.The AUTO setting is brilliant.Keeps the interior nice and cool.

Enjoy your Yeti!

 

P.S. all the above true for the 2 liter diesel .

I invite Rafi_arch to elaborate on the 1.2 liter "heat management" if he wants to , as he too experinces high temperatures

Edited 14 July, 201312 yr by oriki

I've not noticed any difference to normal with my 1.2 Yeti (in UK) except the air con button has been pressed in for 2 weeks  Never had air con before and cant believe how I've survived till now. 

Edited 14 July, 201312 yr by RickT

Over 12,000 miles I have averaged 40.8 MPG, usually getting 42+ in normal day to day driving and 37-38 on long distance motorway drives at 'full' motorway speeds. I have noticed that since the hot weather I am getting 39 MPG in normal day to day driving. I suspect this is down to extra demand from Air Conditioner and slightly lower efficiency at high temperatures.

All measures based on brim-to-brim fill ups.

Anyone else noticed this?

It would be much more noticeable on normally aspirated engines. Hot air is less dense and less efficient, turbos and intercoolers make up for this.

Air con is the big culprit I notice when its first switched on it works hard to get the temp down then eases off slightly.

 

My overall average hasn't changed more than about 0.1mpg

My mpg is noticeably improving, probably because it's a turbo diesel.  Cold starts are what seem to kill my fuel consumption but the engine is warming up almost instantly now.

My Yeti shows no strain whatever,the temperature guage doesnt move upwards the slightest bit and the oil temp never goes up beyond 110 c even when pushed on a very hot day.

I find that very interesting, may be due to differences in engine speed etc of diesel vs petrol, as I consistently see 115C plus for oil temperature - I have actually just returned from a long motorway trip (albeit at speeds not exactly on the speed limit...) with a temperature in the low- to mid- 30s and I was seeing 115 to 120c all the way, and after having just had an oil change last week.

My aircon is buggered and I had an 8 hour drive in my new yeti oven today !!!

 

Going over to play with the Octygenarians in 6 weeks so not worth me sorting it out

 

I find that very interesting, may be due to differences in engine speed etc of diesel vs petrol, as I consistently see 115C plus for oil temperature - I have actually just returned from a long motorway trip (albeit at speeds not exactly on the speed limit...) with a temperature in the low- to mid- 30s and I was seeing 115 to 120c all the way, and after having just had an oil change last week.

That's fine, nothing to worry about on the 1.8tsi. Today mine was around 112-115c whilst the ambient temperature was 32 degrees at mid afternoon. When we go to Spain and Italy in August, doing fairly hard work around the mountainous parts with an ambient temperature of mid to high 30's we'll often see 115-121c oil temps and the highest recorded I've seen overall was on a very arduous 4 day drive through Slovakia/Hungary where we saw 126c oil temps most days, sustained periods and a lot of incline work were mainly responsible. Out side temps were 43 degrees most days though. That's probably what you'd see on track after really thrashing it at a guess. The only thing I would say is that I'm pretty convinced the temperatures are more stable when I switched to 507 spec oil rather than the 504 spec stuff I used during my first two changes. I stick to 507 spec VAG stuff now and it's changed every 4,500-5,500 miles. When it comes out it 'looks' fine with good colour and I never need to top up between changes.

Over 12,000 miles I have averaged 40.8 MPG, usually getting 42+ in normal day to day driving and 37-38 on long distance motorway drives at 'full' motorway speeds. I have noticed that since the hot weather I am getting 39 MPG in normal day to day driving. I suspect this is down to extra demand from Air Conditioner and slightly lower efficiency at high temperatures.

All measures based on brim-to-brim fill ups.

Anyone else noticed this?

I've done Just over 10000 miles and my mpg figures are within decimal points of yours for the different types of journeys you mention. The 1.2 engine copes very well and the air conditioning has a neglible effect on overall mpg, so much so that it is on most of the time either cooling or demisting!!

I've done Just over 10000 miles and my mpg figures are within decimal points of yours for the different types of journeys you mention. The 1.2 engine copes very well and the air conditioning has a neglible effect on overall mpg, so much so that it is on most of the time either cooling or demisting!!

Hmmm - so maybe I am applying a heavier right foot in the hot weather rather than the engine being less efficient!!

My aircon is buggered and I had an 8 hour drive in my new yeti oven today !!!

 

Going over to play with the Octygenarians in 6 weeks so not worth me sorting it out

 

I know the feeling, Mine is too - awaiting fitting of a new compressor. I reckon the interior temperature yesterday was towards 40C. And even the air through the vents and windows feels warm.

 

At least everyone will know when to expect this heat wave to end... as soon as I get the air con fixed.

Over my three years with a 170 Yeti I recorded the mpg brim to brim, and in another place, the ambient temperatures.

Without exception when the weather warmed up my mpg improved, and when it was cold the opposite. Fascinating (to me, at any rate!!) was the way the rise and fall of the graphs mimicked each other.

And because my own personal central heating thermostat is a bit iffy my Air-Con button is permanently pressed! From what I understand the extra load placed on an engine in modern cars hardly affects the mileage attained.

And in the Z in this heat, I drive with the roof down and air-con on full blast, yet it is returning nearly 37 mpg. The Beemer A/C isn't a patch on Skoda A/C!

...Here where I live the minimum temp at midday is 36 c (always measured in the shade , btw) and does go up to 44c. My Yeti shows no strain whatever,the temperature gauge doesn't move upwards the slightest bit and the oil temp never goes up beyond 110 c even when pushed on a very hot day...

Now is the  time to enjoy and appreciate your A/C unit...

 

P.S. all the above true for the 2 liter diesel .

I invite Rafi_arch to elaborate on the 1.2 liter "heat management" if he wants to , as (edit) 'his Yeti" too, experiences high temperatures

Answering the invitation:

 

1) Heat management (engine / coolant heat I guess) - OK, never saw the gauge passing the middle (90 deg C) mark, even when driving uphill.

2) Speaking of which, I was skeptic about a 1.2 L engine on a 1,300 Kg car, but was surprised from the test drive and decided to go for it. Amazing how this "small" engine quietly pulls uphill the "heavy" Yeti without significant effort. Mind you, my precedent Fiat Doblo was the same weight, with a 1.9 L atmospheric Diesel engine, needing to press the accelerator pedal down to the floor and wishing the floor was 5 cm deeper in order to feel the car moving forward... Slowly, the Doblo was doing the job (thanks to the relatively high -12.5 Kgm - torque of the Desel engine). Just trying to imagine the huge 30 Kgm torque of the 2.0 L TDI !

3) A.C. works very well. Best A.C. among all cars owned. Hope "Champion" staff knows well ho to deal with the system, if need will arise. Frankly, can't forget two different trips to the Kineret Lake (where "oriki" lives) returning home with a dead A.C. (on the Doblo) due to +40 deg C (and higher) outside temp and bad maintenance from Fiat staff. Also, an earlier trip there, with the MY '87 1.3 L Peugeot 309 that barely pulled uphill with the "ticking" engine (bad ignition forwarding / engine management).

 

Just for summary - although there is no such a thing the "perfect product" - the best and pleasant car we owned so far !

This is my third car with climate control/air con. My wife's Polo also has air con. It's on permanently. Can't see any reason for turning it off. Keeping it on ensures that appropriate lubrication takes place so never any problems caused by seals drying out. No issue about increased mpg.

The only thing we ever adjust is the temperature control according to circumstances. Normally set to 21 degrees. Never had an issue at all and works very well and very quickly in the current weather.