I have a 2005 Highlander V6 4x4. Not a limited Gas mileage for 1st 7500 miles is combined 18.55 mpg. The best I have ever gotten is 21.5 mpg on a 375 mile trip on the interstate traveling at between 70-75. I have never gotten over 20mpg on any other tank fulls. I run air conditioning all of the time since May. I have just ordered a K & N air filter for $36 and hope to get another 1 mpg. I have been running 89 octane (10% ethonol in it) mostly, but run 87 octane (pure blend) when i find it cheap enough (less than 8 Cents difference). My dealer said I would get better mileage running 91 Octane (20 Cents per gallon more which is about 8% higher cost) but I don't believe him, and i certainly dont think it will improve gas mileage by 8%. He told me Toyota is training dealers to tell people to use 91 octane. I have alwayws been told that higher octane give better performance, but it also burns faster, hence fewer MPG. Now Toyota is saying differently???? Typical gas price in my area is as follows:
I generally use 89 octane (Mobil), and get approx. 21.5 mpg on average. As silly as it sounds, I make it a point to every other day to dust the vehicle, as a smooth surface means less wind resistance. The tires are generally kept at 32psi (checked every 5000 miles when the oil is changed). I also use lucas oil additive for easier startups and less engine friction. I'm using a K&N air filter, but never noticed any real difference. I think I'd have to change the stock intake out for a cold air intake - but don't want the increased sound. (Well I would like it, but my wife wouldn't and this is mainly her vehicle )
BradT
02, Highlander, V6
Last edited by bradt; 08-11-2005 at 11:05 AM.
Reason: clarification
I generally use 89 octane (Mobil), and get approx. 21.5 mpg on average. As silly as it sounds, I make it a point to every other day to dust the vehicle, as a smooth surface means less wind resistance. The tires are generally kept at 32psi (checked every 5000 miles when the oil is changed). I also use lucas oil additive for easier startups and less engine friction. I'm using a K&N air filter, but never noticed any real difference. I think I'd have to change the stock intake out for a cold air intake - but don't want the increased sound. (Well I would like it, but my wife wouldn't and this is mainly her vehicle )
BradT
02, Highlander, V6
so far ive got 967 miles on my highlander and have an estimated 19.1 mpg. Mixed City/highway driving. running 87 octane from 76 since it's what the dealer put in mine to begin with.
I don't believe using a higher octane saves gas and gives u better milliage. It burns a bit more cleaner and prevents engine misfires. It's nice to put some 91 octane in it every now and then to clean things out, but fuel additives do the same. Usually 87 or 89 octane is good for the car. I do reccommend if you can afford it to use 89 though.
does anyone know if shell gasoline is bad for the car/environment etc? My camry stinks, and i think its cos of the gasoline.
I had a 2002 Highlander V6 4X4 and always used 87 octane with 10% ethanol (Sunoco). The best I got was about 32 miles per Imperial gallon. An Imperial gallon is approximately 1.2 US gallons. That mileage was achieved over about a 15 mile trip, split evenly between 60 mph and 50 mph. I have been told that when you get over 60 mph, your gas mileage drops off substantially. Other than that, I would say that the 02 Highlander was dead on with the estimated figures of 29 hwy and 22 city, but NOT in winter!
I now have a 06 Highlander Limited and am waiting to see what it does. I have only 1000 kilometers (622 miles) on it so the figures now may not be a good as they will get after a bit more driving.
The dealer advise that I'd be wasting money using any higher octane than 87.
I have a 2001 Limited. It currently has just under 69,000 miles. I've really only tracked my gas mileage on long trips, on which I seem to average around 23-24 MPG. I have always used regular gas, whatever the octane is, from whatever source is closest when fill-up time comes.
I'll have to check my next tank full of local driving.
We just bought an 06 Highlander V6 2WD. We only have 750 miles on the car so far, but just filled it up, and we are averaging about 20-21 MPG. Not great, but not too bad since our driving is a 60:40 mix of city/highway with a fair amount of stop and go on the city part. Drove 210 miles on the highway at 75-80 MPH and used almost exactly 10 gallons of gas. It's about what I expected, but I am hoping we can get 23-24 mpg on the highway out of it once it's broken in.
I am thinking of switching to a K&N filter (not doing the whole intake, though) and also switching to full synthetic oil at around 10,000 miles.
So far we really like this car--it's our first Highlander.
In our 2001 4x4 Limited V6, we get about 19 average. It actually does make a big difference if you have the AC on, so when we can we leave it off. On a highway trip, not through the mountains, we will get about 24 or 25.
The octane rating of the gas has nothing to do with the milage, only how smoothly the engine runs. The most important factors of MPG is how you drive, and where you drive. Try to keep it below 3000rpm and you will notice a difference.
I have an 03 FWD V6. I get 15-19 In the city and 25-27 on purely highway driving although car is rated for 23MPG highway. I did fill the tires with a little more air... Mixed city and highway I get 17-18 from the 3.0 V6. I use regular gas although manual states to use middle grade of premium for better performance but I tried all 3 and power is the same so stick with regular and get the cheapest you can get.
Last edited by SILVERROLLA; 11-18-2005 at 09:14 PM.
I have a 2005 Highlander V6 4x4. Not a limited Gas mileage for 1st 7500 miles is combined 18.55 mpg. The best I have ever gotten is 21.5 mpg on a 375 mile trip on the interstate traveling at between 70-75. I have never gotten over 20mpg on any other tank fulls. I run air conditioning all of the time since May. I have just ordered a K & N air filter for $36 and hope to get another 1 mpg. I have been running 89 octane (10% ethonol in it) mostly, but run 87 octane (pure blend) when i find it cheap enough (less than 8 Cents difference). My dealer said I would get better mileage running 91 Octane (20 Cents per gallon more which is about 8% higher cost) but I don't believe him, and i certainly dont think it will improve gas mileage by 8%. He told me Toyota is training dealers to tell people to use 91 octane. I have alwayws been told that higher octane give better performance, but it also burns faster, hence fewer MPG. Now Toyota is saying differently???? Typical gas price in my area is as follows:
Please post your Highlander mpg and anything that you think can be done to increase this mileage i am running my tires at about 31psi.
You need to run what your manual says. I bet it says 87 octane. It will run better than on the 91 octane. Your dealer is wrong. Go with the 87 octane it will burn cleaner and better.
Run the 87 octane. It will run better and cleaner. Most people don't know that the lower the octane the better it burns. Go to google and type in gasoline octane and it will have a lot of places that will tell you about gasoline.
18.7 in town....26.3 on highway....installed kn filter and 2 (yes 2) has 2 air intakes...tornado adapters in air intake im happy with that with 87 octane
Between 19 and 20...combination highway and city driving just about every day. I am using 87 octane, sometimes 93 by mistake (the hose is on the end instead of the middle and I am not paying attention). I heard that on long road trips to use the 97 b/c that is where it makes a difference, the higher getting better gas mileage. In my own very unscientific experiment I found little to no difference in MPG. The 97 lasted a bit longer but not enough to make up for the difference in price per gallon.
At 18,000 miles my most recent MPG on combine driving has been 16.70.
while using 91 oct gas. This seems much lower then that of others in this form.
The local dealer at 15,000 miles did adjust the vehicle so the transmission would not
have so much hesitation upon leaving a stop light. Could this be a reason for such
low MPG?
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