Great weather = great FE!
 

Spring finally came back again!

After averaging 40-42 since fall, this weekend we hit over 50 in both cars. This morning I got 62 on the way to work.

Finally!

So jealous of you socal guys... ;)

Re: Great weather = great FE!
 

Same here. After a season of mid to high 40mpgs, now were getting high 50's to low 60mpgs. Gotta love it. Just keep that AC off.

Take Care

Jess

Re: Great weather = great FE!
 

I'm using "AUTO" set at 75 and I think the dealership even put my tire pressure back to factory spec.:omg:

Re: Great weather = great FE!
 

I have seen the same thing too, and the difference is bigger than expected. Even smaller steps in temperature makes big difference in FE. I am more and more convinced that it has to do with the strategy of the engine management. At 10 deg C the car is less prone to shut off the engine when coasting. Going downhill at around 70 km/h the instant FE display will show a few bars (around 2 L/100 km), sometimes together with one or two bars of regen, unless you let go off the pedal completely. At 20 deg C the engine shuts down long before you release the pedal completely. Also in the warmup phase there is difference. At 20 deg C auto-stop is enabled more or less directly from start (cold engine), but at 10 deg C the engine has to reach almost full temperature first. I guess this strategy is primarily to get heat for the climate control (and not so much to reduce wear on the engine).

My own estimate is that FE is 10% better at 20 C than at 10 C, also for longer trips. I haven't done any serious testing or measurement, though.

Re: Great weather = great FE!
 

Your engine shuts down when coasting down a hill at 70 km/h?, actually AS. How about at 90 km/h? I have never expearanced this, something to look forwad to.

Re: Great weather = great FE!
 

I think when rgx says "shut down" he means the valves are closed, so that the engine is not firing=using gas.

Jess

Re: Great weather = great FE!
 

Shoot, I thought we may be going back to the free wheel days!! Thanks Jess. :omg: