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In Reply to: RE: The wiki is repaeting the average fuel economy. It is true some get less than average posted by Elizabeth on July 08, 2012 at 05:57:22
From what little I know, 35/47 mpg seems otherworldly for that car.
Follow Ups:
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Exceptional is what it is. No beef.
Personally I think the 2012 Focus' out there have different fuel maps in them. Some are real gas sipping maps, others not so.
From the Fuelly MPg curve you can see it is a real curve. with some getting poor, many average and some really good MPGs.
Then driving. All it takes is a LOT of stops at stoplights and the mileage is totally screwed. And not so good habits.
I no longer go anywhere in town where the stoplights are bad news (if i can help it)
One can SEE the gas draining away sitting at a long stoplight!!!
The best is long no stop 35mph limit parkways.
30mph areas I drive at 32 mph so i can just squeek into fifth gear. (manual tranny)
I stay in the highest gear which the car will tolerate.
Freeways i go the speed limit, not faster. I try to keep from ever having to slow down, so being below the average speed is great for that.
I drive like a raw egg is under the throttle. I HAVE gotten honks from impatient drivers behind me getting underway from a stoplight... If they need to be in a big hurry, not my problem. I have my tires at 46 psi front 40psi rear.
I used to drive twenty over the limit all the time. Now I drive with my eye glued to the mpg meter.
Haha hah.
I love it at the fuel pump. i fuel up maybe at the most twice a month and usually only have to buy 3 or 4 gallons to top off the tank.My last car got 22mpg. I HAD to buy a car which got twice then to even be worth getting a new car. i think i did OK.
Added: oh yeah, I am retired. That means I NEVER have to drive in rush hour traffic.
Edits: 07/08/12
"I love it at the fuel pump. i fuel up maybe at the most twice a month and usually only have to buy 3 or 4 gallons to top off the tank."
I never fully connected with pumping my own gas. As such, I've become interested in how far gasoline engines have come, under normal driving conditions.
ALL gasoline engines burn gas above the Stoichiometric balance in a rich situation so the engine does not overheat (using the unburned gas as a coolant)
This has always been the situation, and usually the gas is very rich.
To better protect the valves and stuff.
I have wondered why engine designers have not figured out how to really take advantage of lean burning. The greater heat would give more power/heat IF they could figure out how to use it without melting down the engine!!!
The above isn't true any more. Materials are better and engines try to burn pretty close to stoichiometric except at cold start.
They've looked at lean burning for a long time and try to push it as far as you can---the probvlems are predetonation and creation of nitrous oxides (smog) which cannot be cleaned in the catalytic converter.
Modern engines that get the highest MPG like yours are probably direct injection (inject fuel into cylinder during cycle like a Diesel, instead of injecting & vaporizing in intake).
Actual underlying fuel efficiency of engines has been climbing for 25 years steadily, but achieved MPG has not, all because the extra efficiency has gone into heavier vehicle weight to add luxury & features.
The actual MPG not surprisingly has exactly tracked the government requirenments.
Which may seem like a contradiction, the mileage to HP ratio also matters to me. Back to audio...
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