Anyone get 20 mpg with 4.0L V6 ?

Not sure what I'm doing wrong but...13-14MPG. 20+ MPG sounds like a dream

 

I'm right there in the 18.2-18.7 range, but I doubt I'll ever see 20.

 

Summer gas is rolling in ...

I'll break 20 (for the first time) on this tank but only because I've done far more highway driving in the past week than I would really care to.

 

Clean your MAF

 

Got 19-20 mpg for each tank on a 1700 mi trip on I-70 last week (summertime gas helped ???). Used mid-grade all the way.

I travel at apx 7mph above the posted speed limit - so between 72 and 82 mph with cruise on and AC on a lot.

 

FIFY

13.2 last tank. Just re-geared, I'm interested to see how it affects it.

 

Been averaging between 16-17.5 with some light trailer work mixed in , all stock including tires . Not bad , but considering my fukn 1977 FJ40 will pull 16 on the highway is a bit aggravating ...
Sarge

 

2005 Toyota Tacoma Access Cab PreRunner V6: MPG = Highway, easily 24 to 25; Street only: 16 to 18 easily. Again, this is based on the following adjustments/changes:

1. Changed the air intake: Installed Toyota Cold Air Intake: PTR0335090. 2. Oil Catch Can: Installed to recycle the residue/left over from PCV valve. 3. Tire Air Pressure: Maintain correct/safe tire air pressure. 4. Fuel: 87 Octane (The cheapest @ pump here in Los Angeles, CA). 5.) Engine Oil: Full Synthetic.

NOTES: 1. Toyota Cold Air Intake: PTR0335090: Please check prices online; your local dealer's prices are higher than online prices; especial here in southern California. I bought from a Toyota Dealer away from my local area. Actually, I bought from a toyota dealer from Ohio state (California Dealers charge about $100 to $250 for this item.) 2. Oil Catch Can: Residue/Oil, water, fuel mixture is collected and prevents from return to the air/fuel mixture. Prevents this bad residue from returning to the engine. 3. Tire Air Pressure: (My tires: BF Goodrich Rugged Terrain T/A P265/70R16 111T). I follow the maximum air pressured allowed based on the tire walls, not the recommended air pressure on the stock tires based on the door tag. During the summer, from the maximum allowed, I lower the pressure a bit, about 2 to 3 PSI to compensate for the high high temperatures/high heat in southern California. I heard that high temperatures increase the air pressure in the tire and make the tire more prone to blow outs/flat tires. Follow safe air pressure: Under-pressured tires create rolling resistance. When the right time arrived to change the (Original tires from the dealer) worn out tires, I replaced them with BF Goodrich AT (Please correct me if I am giving your the wrong tire name here. The safe, correct air pressure applies to all tires regardless of the brand of choice. I do my best in having my tires close to the maximum allowed air pressure. The less rolling resistance, the higher MPG (Sorry everyone, just mentioning it, I know most of us know this). Time and degradation: Time to get a new set of tires and a new spare: On the 5th year, a tire needs replacement whether they have been driven to their maximum thread wear or not since the rubber degrades over time. https://www.edmunds.com/car-maintenance/how-old-and-dangerous-are-your-tires.html NOTE: I have also provided a graph with my MPG for a few days: The graph shows the MPG for both city and highway/freeway driving. Unfortunately, the software/app I use with my OBDII device does not breakdown or separate the city and highway MPGs. The MPG under 20 MPG is for city driving only with consistent stop and go. The MPG with higher than 20 MPGs is for combined city and highway driving for that day. I have observed in the past when I tracked my highway/freeway driving that my MPGs increaged from 24.5 to over 25 for highway-only driving. Unfortunately, my software/app does not isolate/sort out city and highway driving. I am confident that my highway MPG is very high. Room for improvement: I need to do my online research on the apps/software for my OBDII device to track my MPG or possibly get a newer OBDII device with a better app/software to track separate city and highway MPGs within the same day. I hope my fellow readers find the information above help. These are my personal modifications to my 2005 Toyota Tacoma Access Cab V6 Prerunner. Cheers every one !!!

 

Thanks for sharing, and nice to atleast have some evidence of your mileage claims. I think some members have posted data that was either miscalculated, or taken from short, unrepresentative snapshots.
It will be interesting to see if your fuel saving costs will offset your tire wear costs. You will wear the center of your tire tread rapidly running higher than the Toyota recommended pressure.
The COI I find interesting. I monitor the intake air temperature via scangauge and find it to be at least 10 degrees F or more higher than ambient temperatures even on highways, idling can be much higher. Does your monitoring system allow you to measure that? Does the coi use the same airfilter as the standard stock?

 

I do but I also don’t have a lead foot and I run pure gas in the truck.

 

I easily average 20-21mpg in my stock 4.0 with stock tires. At least according to my ODBII reader.

 

dang i wish i could hit in near the 20's lol i get 15-16 constant every tank! but i have straight highway to and from work! and having to run 70! i just took the secondary air filter out and had to bypass the air induction valves so we will see this week how gas goes! seems to be somewhat better!!

 

Averaged 17.8 mpg over the life of my truck with 89k miles logged. ONLY times i have ever gotten above 20mpg is cruising at 65mph or less, with little to no elevation gain with no wind on stock tires.... IE perfect conditions.

Also this is with a 4x4. 2wd 6 lug trucks easily get better mpgs.

 

On the highway yes. Mixed city driving probably 12-14mpg.

 

I get mid teens on the freeway, but that's usually due to a half/full value headwind and 80mph speed limits.

I can consistently get 20+ in the city going to work though. My record is 27mpg. Don't @ me.

 

My best has been 23.5mpg on a 200 mile trip. Summer 10% ethanol gas, max 70 mph, with the aero tonneau cover https://www.tacomaworld.com/threads...ynamic-bed-cage-tonnaue-cover-version.582736/

 

2007 Access Cab with fiberglass tonneau. All stock otherwise. 89,000 miles.
I consistently get 21 mpg. 30 mile one way to work, 12 miles of it turnpike.
A/C doesn't work right now, but historically I've seen no difference between running A/C or windows open.

 

My average mix has been around 18.5 consistently. More or less depending on fuel seasonal mix. I travel about 500 miles round trip twice a month and get over 20+ on the highway but that's being gentle on the gas pedal (around 65-70mph). I'm also 4x4 auto with 265/75R16 Duratracs and sliders.

Since I've had multiple 1st and 2nd gens, I know that just changing out tires, height, wheels, the mileage changes. I had a completely stock 2009 4x4 manual and was getting 400 miles per tank (about 21-22 mpg) on a 1700 mile roundtrip.

3rd Gen 4x4 auto completely stock was yielding 24-26 mpg hwy with 19 mix.

Pre-Runner, that's a different story. Easily tops the 4x4 numbers.

 

My dad gets about 20 in his '10 DC. His work commute is like 40 miles all highway though.

I get 16.5-17.5 in my '06 AC in regular driving to and from work and around town.

 

My mileage can vary between 13-23 mpg depending. I "USUALLY get 15-17 mpg with normal everyday driving. That is a mix of rural 2 lane and some city driving. Not much true stop and go city driving. When towing that could be a lot less and throw in some off road 4X4 driving and it could be close to single digits. On the open road I get 19-20 mpg.

The most accurate long term test was a trip from GA to the Grand Canyon and back in 2016. I was right at 20 mpg on every tank going west at 70-75 mph. In some of the rural mountain 2 lane roads where 65 was about as fast as possible and there were long downhill stretches where I could coast I got 22-23 on a couple of tanks. On the trip home I hit a strong headwind from Denver to Kansas City where mileage dropped to 16-17 for a couple of tanks. The overall average for about 4500 miles was exactly 20.0.

Truck is a 2007 4X4 DCSB with E rated 265/75/16 tires.