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Ford Fiesta Real World MPG

134 messages,  Last post on Apr 25, 2013 at 9:52 AM

You are in the Ford Fiesta Forum.

What is this discussion about? Ford Fiesta, Fuel Efficiency (MPG), Hatchback

Messages Page 13 of 14

#117 of 134 Re: MPG accuracy [gimmestdtranny] by phill1

Jan 22, 2013 (12:05 pm)

Replying to: gimmestdtranny (Jan 22, 2013 11:49 am)
Seriously, was this Post for real? More likely a "thesis" for a PHD Degree. Worrying about the longevity of a dual clutch automatic transmission and possible fluid changes up to 150000 miles? Are you considering the purchase for Police or Taxi use? LOL

#118 of 134 Re: Ford Fiesta Real Time MPG [phill1] by gimmestdtranny

Jan 22, 2013 (12:27 pm)

Replying to: phill1 (Jan 30, 2012 7:41 pm)
edit: after reading your quick to insult post #117, I was tempted to remove this one, but decided it might be useful to someone else who might actually appreciate knowing the difference in autos and their efficiency potential.
 
One reason (but is only one of potentially many) is that the dual-clutch tranny in the Fiesta does not suffer the parasitic losses that your conventional hydraulic tranny with torque convertor that the Rio uses. I believe this is one reason, if not probably the primary one they decided to use a dual clutch set up in the Fiesta and Focus.
 
But what I would like to know as per my question at the end of my post above...is about longevity vs cost to own/repair. I wonder if anyone has gone 250000 or more miles with nary a hiccup? Naturally, any use in city would be the bigger test since the tran would spend more time shifting and clutch engaging than a user who drives for 100's of miles at a time out on the open freeway with it engaged in one top gear and rarely shifting except maybe for the odd hill. I suspect that computer and clutch pak servos etc are all quite expensive. I think with VW or Porsche dual-clutch trans they don't sell you parts..they sell an entire assembly, read huge bucks.

#119 of 134 Re: MPG accuracy [phill1] by gimmestdtranny

Jan 22, 2013 (12:18 pm)

Replying to: phill1 (Jan 22, 2013 12:05 pm)
 
Phil said:
Seriously, was this Post for real? More likely a "thesis" for a PHD Degree. Worrying about the longevity of a dual clutch automatic transmission and possible fluid changes up to 150000 miles? Are you considering the purchase for Police or Taxi use? LOL
 
Pardon me then... I will never take you seriously or make a helpful reply to another of your repetitive posts again. You have always indicated a passion for details, repetitive repetitive details...yet when someone comes along with a few bits of info that a person could use to good advantage, you get on their case???????
 
Some people would prefer to insult than learn. You decidedly fall into the former category. No wonder you rub others the wrong way from time to time. I've read a LOT lately. This seems to be your curmudgeonly way.

#120 of 134 OK by pf_flyer HOST

Jan 22, 2013 (6:44 pm)

Let's get back to the cars and stop making each other the discussion OK?
 
Thanks for your cooperation and participation!

#121 of 134 Re: MPG accuracy [gimmestdtranny] by xwesx

Jan 24, 2013 (7:55 pm)

Replying to: gimmestdtranny (Jan 22, 2013 11:49 am)
I've heard multiple mentions of the fuel pump longevity vs. fuel level issue in the past, and I'm wondering why that would be the case. Why would manufacturers even put the fuel pump in there in such a way to allow normal fluctuations of the fuel levels to cause damage to the pump?
 
That doesn't make any sense at all.

#122 of 134 Re: MPG accuracy [xwesx] by gimmestdtranny

Jan 24, 2013 (8:14 pm)

Replying to: xwesx (Jan 24, 2013 7:55 pm)
So you have never known a manufacturer to design something to fail.... nicely out of warranty?
 
I presume that the expectation is that most owners will refuel before pump temps get excessive enough that it will fail within warranty periods.
 
Even low fuel lights are conservatively triggered to come on with tons of warning. Many cars can go well over 60 miles or more before running out. So with 2 or 3 gallons still sloshing around is probably still a reasonable heat sink.
 
Excessive heat is the enemy in so many aspects of different components, whether they be electronics, metallurgy, tires, oil, batteries and everything in between. Many items are designed with a duty cycle..( a simple transformer based soldering gun for example, or an inexpensive oil less air compressor) and rely on cooling periods between use in order to not self-destruct.

#123 of 134 Re: MPG accuracy [gimmestdtranny] by phill1

Jan 25, 2013 (7:12 am)

Replying to: gimmestdtranny (Jan 22, 2013 12:18 pm)
So sorry, and I certainly apologize for upsetting you with my sarcastic remark. Perhaps readers appreciate elaborate scientific data in regards to everyday driving conditions. I will remain mute and add no further comment to this thread as I promised I would do the same after being expelled from the Kia Rio5 one as well for hurting another Posters feelings. Cheers

#124 of 134 Re: MPG accuracy [gimmestdtranny] by xwesx

Jan 25, 2013 (7:47 pm)

Replying to: gimmestdtranny (Jan 24, 2013 8:14 pm)
Quite true. I rarely fill my vehicles up before a quarter tank, and I've run them up to 220,000 miles without fuel pump issues, so I very much doubt that this would ever be a problem unless someone routinely ran their tanks dry.
 
I had a fuel pump fail on one vehicle at about 215,000 miles, but someone else owned it for the first 170,000, so I can't reasonably attribute that failure to anything other than statistical chance.
 
That aside, I'm quite happy with the FE on my '11 Fiesta 5-speed. Even at -30F or colder on a full tank driving around town, I still haven't dipped lower than upper 20s. I'm expecting my average after a year to be somewhere close to 35 mpg, but I still have seven months to go before I hit a year.....

#125 of 134 Re: MPG accuracy [xwesx] by gimmestdtranny

Jan 25, 2013 (7:59 pm)

Replying to: xwesx (Jan 25, 2013 7:47 pm)
It seems that the Fiesta really does deliver good fuel economy be it with the stick or DCT. Ford seems to have gotten all the criteria to ensure the claims (exceeding actually in most cases from what I've read) just right, be it through gearing, weight, aerodynamics etc.

#126 of 134 Re: MPG accuracy [gimmestdtranny] by xwesx

Jan 26, 2013 (12:00 am)

Replying to: gimmestdtranny (Jan 25, 2013 7:59 pm)
That surely seems to be the case. I've been pleased with every aspect of it save for the lack of ability to turn the traction control off (I'll remedy that this summer) and the squeaky brakes.

Messages Page 13 of 14

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