Also a 95 Avalon. 216,000 miles.

26 MPG on the highway (almost constant 80mph) with mid-grade.
29.5 MPG on the highway (almost constant 80mph) with premium
32MPG on the highway (mothers driving 65-70) with premium

Those numbers were achieved at around the 200,000 mile mark with the origional denso iridium plugs.

 

about 31mpg on the highway back and forthe to work around 60mph, regular gas

 

Also a 95 Avalon. 216,000 miles.

26 MPG on the highway (almost constant 80mph) with mid-grade.
29.5 MPG on the highway (almost constant 80mph) with premium
32MPG on the highway (mothers driving 65-70) with premium

Those numbers were achieved at around the 200,000 mile mark with the origional denso iridium plugs.

I was under the impression that the Avalon came with Nickel Spark Plugs (either from NGK or Denso, depending on supplies). Did your Avalon come with Iridium spark plugs or did you switch the spark plugs to the Denso Iridium Spark Plugs after you brought it?

 

my '00 will get 28 driving 80-85..... 30 to 31 driving 70 usually plus gas.

 

On my dad's 2004 Avalon XLS it typically puts out 8-9L/100km overall average on the highway.

 

For anyone who is curious what 8-9 liters / 100 km is in miles per gallon, I did the calculations to convert it:

(1 / (9 * 0.264172051)) * 100 * 0.621371192 = 26.1349538

That states that 9 liters per 100 km is approximately equal to 26 mpg.

(1 / (8 * 0.264172051)) * 100 * 0.621371192 = 29.4018231

That states that 8 liters per 100 km is approximately equal to 29.4 mpg.

 

'99. About 28 at 75-80, depends on the wind. I have gotten over 30 and as little as 24.

 

2007 limited

reg. best 31.5 worst 24 wind makes a difference and hills also. dave p

 

I was under the impression that the Avalon came with Nickel Spark Plugs (either from NGK or Denso, depending on supplies). Did your Avalon come with Iridium spark plugs or did you switch the spark plugs to the Denso Iridium Spark Plugs after you brought it?

We bought the car at 144,000 miles from a doctor and his wife and have their complete set of maintenence records (they only took it to the dealer) and the plugs (or a tune up) were never listed as being done. Only one timing belt change and oil/oil filter changes were done. I remember my Dad pulling the plugs when we got the car and saying that they were old, but were not worn. They still wern't worn when they were replaced at a little over 205,000 miles.

Maybe they changed the type of plugs when they slightly redesigned the engine?

 

I get 21 city and 27 highway on an 02 w80k.

 

We bought the car at 144,000 miles from a doctor and his wife and have their complete set of maintenence records (they only took it to the dealer) and the plugs (or a tune up) were never listed as being done. Only one timing belt change and oil/oil filter changes were done. I remember my Dad pulling the plugs when we got the car and saying that they were old, but were not worn. They still wern't worn when they were replaced at a little over 205,000 miles.

Maybe they changed the type of plugs when they slightly redesigned the engine?

Are you sure that the spark plugs that you removed from the car were IK-20 Denso Iridium Spark Plugs?

If you are, then I fear that I paid $12.99 plus taxes per spark plug for 6 spark plugs and an additional $180 for the labor to install them at 77,000 miles when I already had 6 still good NGK Iridium Spark Plugs.

 

Are you sure that the spark plugs that you removed from the car were IK-20 Denso Iridium Spark Plugs?

If you are, then I fear that I paid $12.99 plus taxes per spark plug for 6 spark plugs and an additional $180 for the labor to install them at 77,000 miles when I already had 6 still good NGK Iridium Spark Plugs.

They were indeed. In fact, they are in a plastic bag hanging in the garage because they were still in such good condition that we wern't about to throw them out.

 

'06 Touring

31-34 Hwy

20-22 City

 

05 XLS

30-32 Hwy

20-22 City

Avg usually around 25mpg

 

05 Limited

I average out.
27-30 Hwy

19-22 City

Depending how I step on it, or if you have patience, I got 34.7mpg on Hwy.

 

'00 Avalon mileage

My 2000 is getting around 24 MPG on the highway. I drive around 75 MPH, so based on what the rest of you are saying, I think it may need a tune up. It has 162K miles on it. I just bought this one because at 260K miles, my '96 Avalon was still going strong when I sold it!

What are the best plugs/gap to get the best fuel mileage/performance out of my 2000?

Thanks!

 

if anyone wants me to change their sparkplugs (avalon 95-99) for them, pm me, ill only charge 120 instead of 180.

i am in the san francisco area

 

My 2000 is getting around 24 MPG on the highway. I drive around 75 MPH, so based on what the rest of you are saying, I think it may need a tune up. It has 162K miles on it. I just bought this one because at 260K miles, my '96 Avalon was still going strong when I sold it!

What are the best plugs/gap to get the best fuel mileage/performance out of my 2000?

Thanks!

You will want to install Iridium Spark plugs from either NGK or Denso. You will also want to replace the air filter, fuel filter and pcv valve as well as checking the various fluids in the vehicle.

 

Will do. Thanks!

 

I was under the impression that the Avalon came with Nickel Spark Plugs (either from NGK or Denso, depending on supplies). Did your Avalon come with Iridium spark plugs or did you switch the spark plugs to the Denso Iridium Spark Plugs after you brought it?

Avalons come with Denso 3253 (dual ground platinums @ about $7.50 each), which are very good plugs, but not Iridiums. If it's running Iridiums someone else put them in.

 

'06 Limited

Just came back from 1500 mile trip in northern Arizona both freeway and 2lane. 80+ mph and much higher during passing maneuvers. Altitudes to 8000+. I got 28 - 32mpg on regular. Tried premium - 91 Octane - for a couple tanks - did not seem to make any difference.

 

Unbelievably good mileage

My Avalon is an 06 XL, and from the beginning (I had to finish its breakin on a highway trip, doing the alternating speed thing) it has gotten unbelievably good mileage:

32-33 at 75 mph

This is the best I've EVER gotten from a car, from VW bug to Saab 99 to Maverick, Mustang, Cutlass wagon, Chevelle (ugh), Neon, Voyager, and 01 Camry. And it's easily the biggest (except for maybe the Cutlass).

And it's using regular unleaded. The dealer said that a better grade of gas would get better mileage, but after very careful testing under highway conditions, tank to tank, gallon to gallon there is I have found there to be no difference at all.

Bill

 

I have a 98 Avalon and get around 18 miles mixed highway and local driving. A couple of years ago I went into Valvoline drive in oil change. They have a machine where they clean out the pistons. This brought me back to 22 miles per gallon. I am thinking of doing it again this winter.

 

I have a 98 Avalon and get around 18 miles mixed highway and local driving. A couple of years ago I went into Valvoline drive in oil change. They have a machine where they clean out the pistons. This brought me back to 22 miles per gallon. I am thinking of doing it again this winter.

Have you ever considered using fuel injector cleaner?

 

I have a 98 Avalon and get around 18 miles mixed highway and local driving. A couple of years ago I went into Valvoline drive in oil change. They have a machine where they clean out the pistons. This brought me back to 22 miles per gallon. I am thinking of doing it again this winter.

Pay Toyota to check it out. With the potential increase in miles to the gallon that you SHOULD be averaging you could really recoup the money -- unless you bad milage comes from the way you drive.