What would be nice, is if car manufacturers added a "green-line" section to the tachometer.
We all know what red-line means. "Green-line" could be a shaded section on the tachometer that would denote the optimal cruising RPM range for that car.
This is something I always am conflicted with...when driving on city streets, say @ 45-50mph, is it better for me to keep it in 4th or move to 5th? And as I get faster, at which point does 6th become more efficient than 5th?
@TreyWaters: That sounds like my commute every day--11 miles, but nearly 30 minutes...all surface streets.
I usually go to 5th and cruise as long as I can at 1200-1400 rpm (level ground at 40-50mph). It never occurred to me that maybe I should be in 4th gear instead.
@TreyWaters: My car has one. And it's practically twenty years old. Wish the world would catch up some days.
Shifting into the highest gear is generally the simplest way to maximize your fuel economy (besides not driving like a dick). Make sure you have enough revs so the engine doesn't lug. And trying to accelerate strongly when the engine isn't in it's power band will also waste fuel, so don't be afraid to downshift when needed.
@timtoolman: Works for me. I can get 30 mpg at a nice, steady 100 mph. But the best milage I've ever gotten was about 43 mpg while averaging about 50 mph on the highway. But 30 mpg in average highway driving, not trying to squeeze out the best milage seems to be about average for me.
@TreyWaters: The tow truck that dragged my car out of my cold wet hands last night had a big green zone on the rev counter, we could do something like that.
@Fourstring85: I played with the system in my grandmother's '00 Volvo XC (which is for sale, hint hint) which read anywhere from ten to seventy MPG depending on what I was doing.
Power and fuel efficiency (not simultaneously, obviously) in the same vehicle is nice to have. Hopefully more cars will come with a direct injection engine soon. My own turbocharged car (300HP, 19MPG combined city + highway) is somewhat like that but not quite... If only the 911 was a more practical car.
I need to get the instantaneous mileage computer back working in my Jag. That was fun to see how low I could get it to read whilst pulling onto the freeway.
@joshman - chasing that star: Ditto...Porsche needs a gauge that monitors mpg and punishes the driver for high numbers, like randomly readjusting his seat or changing the radio to speedmetal (punishment for some, motivation for all)
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I've been saying that for a while now. By golly, it works.
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I'm willing to bet moving to 5 and 6 speed autos and 6/7 speed manuals would get pretty much everything ~5-10%.
Hell, even old muscle cars will get into the 20s if you swap in a 6 speed and reasonable rearend.
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We all know what red-line means. "Green-line" could be a shaded section on the tachometer that would denote the optimal cruising RPM range for that car.
This is something I always am conflicted with...when driving on city streets, say @ 45-50mph, is it better for me to keep it in 4th or move to 5th? And as I get faster, at which point does 6th become more efficient than 5th?
12/17/08
I usually go to 5th and cruise as long as I can at 1200-1400 rpm (level ground at 40-50mph). It never occurred to me that maybe I should be in 4th gear instead.
12/17/08
If you go 90, you can cut your time by a third, so you use less gas, right?
12/17/08
Shifting into the highest gear is generally the simplest way to maximize your fuel economy (besides not driving like a dick). Make sure you have enough revs so the engine doesn't lug. And trying to accelerate strongly when the engine isn't in it's power band will also waste fuel, so don't be afraid to downshift when needed.
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12/17/08
If this is their new marketing plan they're gonna end up needing a bailout soon too.
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Sure, at any given second...
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Or is that not what they're going for?
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"Step on it! We're approaching EPA estimates!"
12/17/08
Fuel efficiency is not fun. Conspicous consumption is fun.
12/17/08