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Old 03-13-2018, 08:30 AM   #11 (permalink)
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F150 is only going to see those numbers at low speeds. In a Prius, you can cruise at 100+ mpg at 25mph, but will see less than 40 with all the mods in the world if you're driving at 75+. The same applies.

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Old 03-13-2018, 10:39 AM   #12 (permalink)
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Originally Posted by mpg_numbers_guy View Post
If you look at the average MPG for each vehicle, they don't count the outliers.
I think they do if the individual car has enough fill ups so it doesn't look that far off. If that car only had a couple fill ups of 200mpg sure, but if that car has 100 fill ups and in there are 4 200 mpg tanks they don't throw out those in the average. They only throw out a whole car not individual tanks.
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Old 03-13-2018, 10:41 AM   #13 (permalink)
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I don't think any f150 owners are seeing 30 mpg. Some ecodiesel Dodge guys get high 20's without trying, I'm sure some of them get over 30 at times. Maybe when the new 3.0 diesel f150 comes out they too will have a 30mpg possible full size pickup.
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Old 03-14-2018, 03:12 AM   #14 (permalink)
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Its an interesting thought. Synopsis on ecoboost was it got advertised numbers when driving as normal, but under towing conditions the rich afr of the boosted models got worse mpg than the v8. When towing the 2.7 actually got the worst. ��
Also dont buy a direct injected motor. Ford even swapped back to port/direct injection since they couldnt keep the valves clean on the old 3.5s ��
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Old Yesterday, 07:36 AM   #15 (permalink)
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The new GM 2.8L Duramax full size van does quite well

I recently purchased a full size chevy 2500 van with the 2.8 Duramax and with about 7500 lbs or more regular weight, we are getting 17 to 18 in chicago city traffic and about 25 highway with no attempts to save fuel. It has about 2500 miles on it now. New and empty we saw about 27 highway on shorter 100 mile trips. It may have gotten around 30 on the longer trip when it was delivered from out of state. IMHO turbo 6's are a stupid idea for any truck that is doing real work. Diesels are inherently efficient at extremely heavy loads.... lots and lots of torque at low rpms. The 2.8 diesel produces about 360 ftlb of torque.... the same as the 6.0l gas v-8, but at much lower rpms. I bet much better city mileage could be gotten by changing the trans programming. It holds lower gears in city traffic than are necessary, probably for improved engine braking. Overall fuel usage is about 1/2 that of the gas vans we have. The extra cost of the diesel engine is returned by 20,000 miles. The gas savings along covers about a third of the car payment.

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