MeeLee Report post Posted May 12, 2021 (edited) If you look careful, the engine tach indicates ~1.2k rpm, the mpg readout at roughly 55mpg. I've seen this stuff on Geo metros, or Mitsubishi Mirages, doing 35-50mph, but never on any vehicle doing 75mph. It also kept that mpg rating for most of the ride. Just required extreme throttle precision, and a foot that won't move the throttle by even a single millimeter! https://youtu.be/axH4_pB8fDE Edited May 12, 2021 by MeeLee Quote Share this post Link to post Share on other sites
Sky14FFH Report post Posted June 27, 2021 (edited) Might be one of those sweet spots, downhill or a tailwind. His average is 46.2. Bottom line is does this translate to real world once at the pump. Was in a body shop less than 10 years ago once and was reading a Forbes magazine. There was an article in there by a self professed experienced "car guy" who insisted that it violated the laws of physics for any car to get over 35mpg and meet the CAFE standards. Had zero respect for Forbes magazine after that. Edited June 27, 2021 by Sky14FFH Quote Share this post Link to post Share on other sites
Sky14FFH Report post Posted July 16, 2021 What year do you have? I wish I could get an update on the computer so that I can view the telemetry on the right. Anyone know how that can be done without having to pay too much for it? I'm out of warranty. Quote Share this post Link to post Share on other sites
MeeLee Report post Posted July 28, 2021 On 6/27/2021 at 2:52 PM, Sky14FFH said: Might be one of those sweet spots, downhill or a tailwind. His average is 46.2. Bottom line is does this translate to real world once at the pump. Was in a body shop less than 10 years ago once and was reading a Forbes magazine. There was an article in there by a self professed experienced "car guy" who insisted that it violated the laws of physics for any car to get over 35mpg and meet the CAFE standards. Had zero respect for Forbes magazine after that. It is theoretically possible for a ffh to get ~50mpg on gasoline alone, using a 3 cylinder, 1 liter engine. The 35mpg probably has to do with keeping the 20% incline in the calculation. From early on, GM created their cars to be able to tow an additional car their weight up a 20% incline. With modern advances in technology, and increased performance and efficiency, this is no longer a requirement. And few cars, like the ffh, use their cvt to choose a gear ratio where the engine is barely able to keep the car rolling at cruising speed, in order to maximize mpg. Quote Share this post Link to post Share on other sites
Sky14FFH Report post Posted July 28, 2021 (edited) MeeLee: Not sure what you're talking about. I used to get 50-53mpg all the time with the FFH before I got the new tires. Many of the members of this board still do. There is no FFH with a 3 cylinder 1 liter engine I've heard of. Never heard of the towing thing either. Edited July 28, 2021 by Sky14FFH Quote Share this post Link to post Share on other sites
MeeLee Report post Posted July 29, 2021 MPG drops quickly once hitting the highway, and try to run on the ICE only (>65MPH). I do a lot of mixed city/suburbs/highway. Perhaps 15/45/30 ratio. Quote Share this post Link to post Share on other sites
ptjones Report post Posted July 29, 2021 I got the perfect deal 30 to 40 mph tail wind going across NM and Texas for about 400 miles averaging 62 mpg which would include 3,500 ft drop in elevation.☺️ Had similar experience get 60 mpg on I-10 from El Paso east going 80 mph strong tail wind and drafting semi, the wind was so strong that drafting didn't make much of a difference. It is bad when you have to go the opposite way. ? Paul Quote Share this post Link to post Share on other sites
Waldo Report post Posted July 29, 2021 On 6/27/2021 at 2:52 PM, Sky14FFH said: Might be one of those sweet spots, downhill or a tailwind. His average is 46.2. Bottom line is does this translate to real world once at the pump. Was in a body shop less than 10 years ago once and was reading a Forbes magazine. There was an article in there by a self professed experienced "car guy" who insisted that it violated the laws of physics for any car to get over 35mpg and meet the CAFE standards. Had zero respect for Forbes magazine after that. So if I've found the right article, the exact quote is "But there's just no way anyone subject to the laws of physics and automobile engineering can get a 5,000-pound pickup, or any mass-produced, reasonably priced sport utility near that weight, up to 35mpg. " https://www.forbes.com/forbes/2008/0128/048/?sh=2de3e8247ff9 The difference between claiming "any car" and "a 5,000-pound pickup" is pretty substantial. If fact 13 years later, the article is spot-on, even the new F150 hybrid doesn't get close to 30mpg, let alone 35. The automakers have come to the same conclusion, they just can't get to an affordable 35mpg fleet average using combustion powered vehicles and thus have pivoted and are going all-in on BEVs. Sure you could make an F150 out of carbon fiber and with all kinds of other fancy technology you could likely physically get it to 35mpg, but it really isn't practical or a sustainable business. Quote Share this post Link to post Share on other sites
mwr Report post Posted July 29, 2021 19 hours ago, Sky14FFH said: I used to get 50-53mpg all the time with the FFH before I got the new tires. Many of the members of this board still do. The only way I get 50-53 mpg with my 2015 FFH (not counting downhill or a strong tailwind) is driving ~45 mph on "back roads" which doesn't happen often. Quote Share this post Link to post Share on other sites
Sky14FFH Report post Posted July 29, 2021 (edited) 5 hours ago, ptjones said: and drafting semi Wouldn't that cause rock chips? I used to do that when I was young but read it could be illegal and the semi drivers don't like it especially if they cannot see you in their rear views. Yeah if you're going to get a tailwind going down hill you're going to get 62mpg. Down hill in my old car I can even get 46mpg but its the return trip that kills the average. It's a stick shift. 1 hour ago, mwr said: is driving ~45 mph on "back roads" which doesn't happen often Or 48-53 or so with some hills to play hypermiling with. That's how I used to get it with the Energy Saver tires on. Once stretched out about 3 miles on the battery alone. Edited July 29, 2021 by Sky14FFH 1 ptjones reacted to this Quote Share this post Link to post Share on other sites
ptjones Report post Posted July 29, 2021 It is possible to get over 50 mpg on the HWY and I have been averaging 52.8 mpg for the last 6 years with 78% HWY, 206k mi. Couldn't find any drafting Laws, but you're suppose to leave enough room in front of you to allow for someone to over take you and pull in. I usually try for 100 feet and it cuts down on the chipping. As you have noticed tires make a big difference. Paul Quote Share this post Link to post Share on other sites
MeeLee Report post Posted August 17, 2021 (edited) Let me correct what I said, I meant to say "50+ MPG on the ICE alone". Once I drop below 70mph, the electric motor kicks in, and reaching above 50mpg is easy. This car isn't the only one. The Sonata 2.0 Hybrid gets those same numbers (plus an mpg or two). The Lincoln MKZ Hybrid (I believe it was), is also based on the same platform.. And the Hyundai Elantra 2.0 with atkinson engine, should get the same numbers, but it's been a long time since I've driven one (approx 7 years ago). Edited August 17, 2021 by MeeLee Quote Share this post Link to post Share on other sites
