MPG on a 2005 Accord with 60k miles

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Buster, I'm getting great mpgs in my Civic Si with Havoline. 27-28/32-34. EPA figures are way lower.

We get 30-31 mpg always, sometimes almost 32, in our '04 V-6 Accord at 75-82ph. Early oil was GTX and got 29-30, then
Mobil1 1 30-31.8, and now Syntec gets about the same as Mobil 1...WORST was 29 with hills and winds...
 
I ran a little experiment with my 06 Mustang GT this week. It is only rated 17/23 but I have gotten good mileage compared to previous Mustangs. I read on the Mustang Source that 65mph was a "sweet spot" for hwy mileage. I ran a 60 mile test on I20 south of Dallas. Great conditions, cruise on, about 60 degrees. No air conditioning.Only had to nudge to cruise control once. Got 30.1 mpg by the onboard computer. It drops quite a bit at increased speed and doesn't do any better at 60.
 
teven, I didn't but I wish I had. I've run a lot of different oils in this car. No question the engine just feels better with a 20wt, as one would expect.

The Havoline DS 5w-20 is only 8.0 cSt. The Amsoil was 10.7 cSt. The Amsoil is good stuff, I just switched back due to shorter drain intervals/cost. I'm using a Eao filter also.

What I plan on trying next, is driving only 70 mph on one tank and see what I can get mpg wise. It's going to be tough. 80 mph is too slow for me. Honestly as many of you know, in the left hand lane 85mph is sometimes the norm. I can't tell you how many times I have state troopers push me out of the left hand lane while I'm doing 80 mph. Just going with the flow....

Also, once you're used to driving 80 mph on a daily basis for 70 miles a day, it's very hard to go any slower. Hard to go back. Like watching HDTV then going back to regular.
 
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Also, once you're used to driving 80 mph on a daily basis for 70 miles a day, it's very hard to go any slower. Hard to go back. Like watching HDTV then going back to regular.

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guess it depends on your priorities - do you need to get there in a BFH, or would you rather get better MPG?
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I'm a reformed 'me first' driver - and yes, it is very hard to do (I have a ~72 mile round trip commute to work).

I say try 60-65MPH for a month, maybe two. Keep a log of how long it takes you to get to work/home compared to what you're currently doing.
 
I just like to drive fast. I can't stand driving 60 mph. It's just too slow.
 
I'm the same. I get 33mpg going 70mph in my 2006 mazda6, but only get 32mpg going 75mph. I see the 1mpg sacrifice as worth it.
 
Well I hope my V6 starts getting up there with you other V6 owners. I'm averaging about 27.5 overall, and mine is 90% highway at 65-75 mph average. Of course it is the 5AT, not the 6MT.

I hope it improves as it continues to break in, because I certainly don't drive all that fast, and I don't do WOT's or even hardly any hard accelerations. Wonder if the change too PP will help any...probably not. I'll just keep watching and hoping.

Hey Buster, I just posted my first UOA...check it out!
 
As for constant cruising, there is a wide difference. It is an interesting thing to note, and given a set of cars with good modern engine design and similar aerodynamics, the situation should be roughly the same.

I find 71 MPH to be the optimal... I get 36 in mixed hills and flats in my 9-3. Above 75, MPG drops down to 32-33, which is below the EPA highway estimate of 34 MPG. After 85 MPH, I dont care to know, as Im sure its at 30 or below.

If I do 65, I average about 37, and at 55, I can just barely scrape 40. But thats going too slow for most of the roads that I do long-distance highway driving.

I also found no difference in MPG as the car broke in...

2004 Saab 9-3.

JMH
 
Buster, I have the same motor you have, but in a CR-V, hence more wind resistance. I just took a road trip a few days ago, clear of all interstates, just on back roads where the limit is 55. I had the cruise control set at 65 for a large majority of the time, and got 31-32 mpg. The trip included a little bit of stop-and-go on the way through some small towns. At 78 - 80+, I'd say you're doing very, very well.
 
My '95 Accord has a 2.2L I-4, a manual, and 191,000 miles on it. It used to be rated 25/31, new ratings are lower. I used to get 28-29 mpg doing pizza delivery, now my commute is almost all highway. 30 miles each way and I do either 80-85 or as close to that speed as I can get given traffic conditions. I've averaged 30-32 in the last two winters and 33-35 in the last two summers. High speeds don't reduce my older Accord's mileage by much.

I almost never use cruise control, when I do I see a big mileage hit.

Try running the throttle yourself and see what your mileage does. I noticed that my cruise likes to use either too much or too little throttle; it doesn't know how to drive efficiently. Maybe your much newer cruise is better though...just something to think about.
 
Palut has a good point. On that trip I mentioned, there were some fairly steep and curvy hills, on which the car downshifted and hit the gas hard to keep speed where I would have allowed the speed to drop just a little and prevented the AT from downshifting if I hadn't been using the cruise control. If you're on flat roads, though, it probably doesn't make such a big difference. When I have to brake a little bit I always accelerate gently before hitting 'resume' so that it doesn't take off like a jackrabbit.
 
Palut and Alcibiades, you two are assuming the person pushing the pedal is better than the cruise control! Believe me, that's not always true. I cannot believe how badly some people peddle the pedal...and either don't know or just don't care! I beat the cruise on hilly roads, but on dead flat, no difference, of course....
 
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Palut and Alcibiades, you two are assuming the person pushing the pedal is better than the cruise control! Believe me, that's not always true. I cannot believe how badly some people peddle the pedal...and either don't know or just don't care!

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You can say that again! I was once stuck behind a woman driving Kia for about several miles. She was leading the fast lane, noone in front of her. She would accelarate from 60-65 and then BRAKE from 65 back down to 60. She repeated this process about every 10 seconds for the whole time I was behind her. I was amazed that someone could drive like that. That someone like that can even get a license! It seems that very few people on the road know how to conserve momentum.

I'm assuming that since Buster is a BITOG regular and actually concerned about his car and his mileage that he knows how to properly conserve momentum.
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Yep. I imagine Buster knows! I also know for a fact he doesn't drive the same roads as I have been on lately. SWARMS of motorcycle troopers have been nailing people with regularity around here...and from what I can tell, you'd better not be going more than 8-9 mph over the posted limit. Different customs at different places!
 
Titan makes a good point; probably very few really care. But I was only assuming that those who care to pay close enough attention can do better than their cruise controls at improving mpg.
 
I've been a little disappointed in my mileage in the PT Cruiser. It must be the gearing of the 4-spd auto...(even though it has 'auto overdrive')

The 150hp/150ft-lb 2.4L DOHC is a great engine, but man, I keep track of my mileage very closely and I've been managing 21mpg on my commute lately. Best was 26.1mpg last summer at 65mph.

My sweet spot is 67mph, tach is pegged at 2500rpm. If I take it up to 72mph, I'm at 2850rpm, and my gas mileage drops by 2 mpg(a 10% drop!)...

Stupid 4-spd auto...my mom was the first owner of the car...otherwise I'd have gotten the stick...
 
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