20% improvement in MPG

Likely it's the placebo effect......mostly.

 

If you don't typically reset the meter, it would have been showing a very long term average incorporating all kinds of driving and weather. It wouldn't be surprising for your new short term average to be much better if weather is good, and driving is sedate/cautious

 

Just like any digital device, unplugging it periodically is a good thing, try it with your cable box, or your desktop computer, who knew? But I agree, unhooking the 12v and giving it a good slow 2 amp top up and re-hooking it is actually a healthy thing, and I agree, better mileage , winking because of the 2% mpg difference between the prius brain and reality.

 

brilliant!

 

Hi Goldfinger,
Could you please tell us what exact tyres, tyre sizes and tyre pressures you're using? Over 70mpg in the UK is very good indeed. I managed to get up to 66mpg indicated last summer (out of a tankful - or 43 litres to be exact). And that was running with A/C on the lowest setting on the return commute home everyday. Where do you regularly fill up with fuel? As in which fuel supplier? Did you use Cruise Control or did you achieve these figures without it?

Data_Daedalus

iPad ? HD

 

One thing I would like to know is this. Does the MFD allow for the larger gallon that you chaps have there when doing the calculation? I do realize that volume wise the gallon there is LARGER than the gallon on this side of the pond.

My question is if the Prius you drive accounts for that difference in volume when calculating the MPG.

Hope this makes sense. I would really like to get a clarification on it for better understanding of how the UK Prius models work in comparison to say the USA Prius models.

Thanks!

Ron (dorunron)

 

Yes, it certainly does Ron.

So for example, 70 MPG (UK) is only about 58 MPG (US). So while 70 MPG (UK) is still very good for motorway speed, it's nowhere near as crazy as it's sounds. Quite easily achievable at 60 MPH, but obviously getting harder as the speed increases.

You might be interested to try my converter program Ron, it converts between all commonly used fuel consumption units. It's a tiny no nonsense program that runs stand alone on any windows computer (Windows 95 onward).

It's in the gen2 file library here: Simple Fuel Consumption Converter Calculator. | PriusChat

 

Thank you uart for the clarification. I now feel better. Thought I was doing something wrong but now found out I was right up there with the UK folks.

FWIW, when I turned in the Gen II earlier this week, the MFD was showing 57.1 with 215 miles on it. I pointed it out to one of the salesman that was dealing to me. His eyes got real BIG.

Here's the best tank I ever did if I recall correctly. I didn't make it to the 500 mile mark. I was down to one pip and a little nervous. Never had ours down that low in the time we drove it. I have read too many horror stories here on Prius Chat about running out of gas in a Prius...

I do however intend to see how far I can go on this new Gen III. Watching the distance to Empty and will fill up when it hits zero or the last pip whichever comes first.



Ron (dorunron)

 

Goldfinger congratulations on breaking 75 mpg. As I stated in another thread the low 70's are easily achievable with a gen2. Keeping the speed down a little really helps as does the warmer weather. Those Yokohama tyres are not doing you any favors mpg wise, but it is pointless changing them "money wise" if they have good treads. Tyres that are nearly worn out will also give better mpg readings.
I cannot find any Yokphama tyres with a fuel economy rating better than (E) many are at (F and G) this is in the OEM size 195/55/16.
Perhaps it should also be pointed out to those in the US that the UK/European gen2 Prius comes only with 16 inch wheels reported as not to produce as high mpg figures as the US 15 inch.
I now buy my fuel from Asda (Wallmart in the US) at only £1.25.7 a ltr compared with Morrisons £1.29.9.

John (Britprius)

 

Yeah 70 MPG-UK (58 MPG-US, 4.0 L/100km) is good fuel consumption, but relatively easy to achieve on a single good trip, and still very good for a full tank average.

75.5 MPG-UK (63 MPG-US) is a *lot* harder to achieve on a full tank average basis. A one way trip is a different thing though, as even a modest difference in elevation can have a noticeable impact on fuel economy. You can also get lucky with a tail wind for example. So I wouldn't get too excited about a single one way trip figure, but concentrate more on what you can achieve as a full tank average.

 

ill see your MPG and raise it

though i do have a SLIGHT advantage...




the above pic was taken 10 minutes after leaving work for the day and filling up on the way home.

130MPG imp
108MPG US
2.1L/100km metric.

used 33.74L for the 1564KM and seven weeks of commuting.
all in up to 70kmh speed zones and all in city conditions.

Jason.

 

Jason . What is your average speed? H

 

I must add , those are great #'s H

 

i guess it would be around 60kmh.
or just south of that. the real reason im getting such good numbers is the PHEV system....

basically, for any journey of up to around 1hr:20 minutes, in city traffic, i can get about 50% pure EV.

Jason.

 

What is a phev system. Have you converted too a PIP system? [added a couple packs]H