Honda Ridgeline Owners Club Forums banner
1 - 20 of 22 Posts

· Registered
Joined
·
42 Posts
Discussion Starter · #1 · (Edited)
I wanted to hear some suggestions that others have tried to increase their MPG. I have done a good amount of research but I still feel I am missing something as far as improving gas mileage.

I understand this has probably been covered a million times, and it's a truck, you don't buy a truck for good MPG. Which I wasn't expecting good gas mileage anyhow. Just curious really.

Right now I average about 13-15 MPG maybe closer to 16 on highway. Only hit 17 once. Here is a bit of info on the truck & what I've tried:

2006 Honda Ridgeline RTL
I am NOT the original owner, I bought it at 127k
133,xxx Miles currently.

Oil change @ 128k. (Mobile 1 synthetic 5W-30, Honda OEM filter)
Transmission Fluid changed @ 128k. (OEM Honda Fluid)
NGK IZFR5K-11 spark plugs 3 weeks ago.
K&N 33-2323 Air Filter 3 weeks ago.
Tires at 36-38 PSI at all times.
87 Octane regular gas.

Minimal weight inside of the truck other than me, my girlfriend occasionally, spare tire, and maybe 60 lbs in some spare tools, etc.

I have tried both driving slowly, trying to keep the trans to shift at or before 2500 rpms, or driving heavy and to be honest I don't really see much of a crazy difference, maybe .5-1 mpg difference. I live in the northeast corner of PA, so hills are not uncommon but it's not a daily occurrence.

I'm just looking for suggestions that I could try next. The bad gas mileage really don't bother me too much, I didn't buy this truck for good gas mileage, i bought it to haul my quad, reliable in all weathers, and tow my civic back & forth to the track.

But I do drive it daily, so a few extra miles wouldn't hurt! So with that being said, lets hear your suggestions that I could try next!

Thanks mucho~:act035:
I'll leave yall with some pics!


 

· Registered
2014 Sport
Joined
·
4,393 Posts
Just for comparison, I have never gotten particularly good mileage out of my 06. I get around 15 in mostly city (REAL CITY, Washington DC BS traffic!) with a small amount of beltway (hit or miss for traffic). On pure highway the best I have gotten is around 19. In the winter, these numbers drop an MPG or two.

Some of those who are claiming much higher mpgs are are probably using the trip computer rather than doing actual calcs. That said, some people do seem to honestly get well over 20 on the highway and around 18 mixed.

The 2009 and later vehicles seem to inherently do a bit better with the newest ones being the most efficient. Honda made a bunch of small changes in 2009 and improved the areodynamics a bit on the newest ridges.

Stop and go traffic will kill your mileage as will short trips.

If you are so inclined, you could try doing a pure highway run and refilling with the same technique at the same station and same pump. Keep it under 60 and on the flats / use the cruise control. If you can't get 20ish MPG in this scenario then you might have something wrong with your truck.

Ideas:
Turn off the AC (I believe the AC is always on in the Auto mode)
Get rid of the roof rack if you have one. (I see from you pic that you don't have one)
Get low rolling resistance tires that are the correct stock size
Align the truck
Get rid of a lift kit if you have one (Doesn't look like you have one)
Replace your O2 sensors.
Adjust your valves
Get rid of unneeded weight
Use the correct 5-20 or 0-20 engine oil
Make sure the plastic under engine / wheel well covers aren't flapping in the breeze
 

· Registered
Joined
·
547 Posts
I drive mostly highway in my 2012, and routinely get over 23 MPG - and yes, the trip computer reads about 1/2 MPG high, and I am accounting for that. Some tips:

1) switch to 0W20 Mobil 1.
2) do not use the cruise control, or try to maintain a steady speed. Instead, maintain a steady throttle level - let the speed drop off a bit on uphills, and run high a little going down. The goal is to avoid downshifting.
3) optimum highway goal speed is 68 where I drive - keeps you from downshifting as much compared to holding right at 65. Or you could drive way slower, but that's annoying.
4) check tire pressure often, and when your tires are cold.
5) lose the K&N - it's doing nothing for you.
6) change your cabin air filter - better airflow keeps you from having to turn the AC on as much.
 

· Registered
2018 RTL-E
Joined
·
679 Posts
Unplug your battery to do a throttle logic reset. This will clear the old "habits" and let the truck learn your driving style. There are some threads if you search and I might have the wrong term. But that's the gist of it.
 

· Registered
Joined
·
2,647 Posts
How long are the trips that you have used to compute highway efficiency? The reason for asking is that, if the engine isn't fully warmed up, you should expect no better than city mileage even when on the highway.

It can take up to 10 minutes on the road to be fully warmed up. Thus, only much longer trips should be considered "highway", where that warm-up time becomes insignificant.
 

· Registered
Joined
·
42 Posts
Discussion Starter · #8 ·
Ideas:
Turn off the AC (I believe the AC is always on in the Auto mode)
Get rid of the roof rack if you have one. (I see from you pic that you don't have one)
Get low rolling resistance tires that are the correct stock size
Align the truck
Get rid of a lift kit if you have one (Doesn't look like you have one)
Replace your O2 sensors.
Adjust your valves
Get rid of unneeded weight
Use the correct 5-20 or 0-20 engine oil
Make sure the plastic under engine / wheel well covers aren't flapping in the breeze
Thank you for your suggestions!
No roof rack.
I'll look into tires when I'm ready to replace these!
Just got an alignment done within the last 3 months.
No lift.
I will look into the o2 sensors!
I will look into a valve adjustment!
I believe I used 5w20, I might have made a mistake when I made the post. I will double check when I am home.
I do have to replace the passenger front cover, it is broken.

PS:Make sure your KN isn't over oiled.
This is a brand new K&N Filter, I'll assume it's correct. Didn't seem over oiled when I put it in.

1) switch to 0W20 Mobil 1.
2) do not use the cruise control, or try to maintain a steady speed. Instead, maintain a steady throttle level - let the speed drop off a bit on uphills, and run high a little going down. The goal is to avoid downshifting.
3) optimum highway goal speed is 68 where I drive - keeps you from downshifting as much compared to holding right at 65. Or you could drive way slower, but that's annoying.
4) check tire pressure often, and when your tires are cold.
5) lose the K&N - it's doing nothing for you.
6) change your cabin air filter - better airflow keeps you from having to turn the AC on as much.
Thank you for your suggestions!
I often use cruise control on most highways.
I will be more consistent with my tire PSI in the mornings.
The next step after this K&N filter will be an aftermarket intake.
I just replaced the cabin air filter, definitely needed it!

Unplug your battery to do a throttle logic reset. This will clear the old "habits" and let the truck learn your driving style. There are some threads if you search and I might have the wrong term. But that's the gist of it.
I have never looked into this, I did however replace the battery shortly after I purchased the truck. I would assume replacing the battery would have cleared the throttle logic?

How long are the trips that you have used to compute highway efficiency? The reason for asking is that, if the engine isn't fully warmed up, you should expect no better than city mileage even when on the highway.

It can take up to 10 minutes on the road to be fully warmed up. Thus, only much longer trips should be considered "highway", where that warm-up time becomes insignificant.
Most of my highway trips are easily 2-4 hours. I don't count anything less than 15 minutes as a highway as I take a "highway" to work but i'm only on it for 7-10 minutes.

I found that going downhill consistently helps my mpg.

I've tracked mine now for over 175,000 miles. You can see Fuelly doesn't lie.
I enjoy your sarcasm, the ride home is all downhill so that helps!
 

· Registered
Joined
·
4,633 Posts
We use to get 20 out of our 06, but we are perfectly flat here, near sea level and rarely below 30*. Speed was mostly under 70.

Now with the 2011 we are getting 21.2, or whatever fuelly says. I have the entire fuel life logged in fuelly. I get better mileage with the AC off. The trip computer does not change when we have the bed loaded with feed bags but does drastically when the trailer is behind it empty or loaded.
Tire are set at 32, 5w20 and 0w20 have made no difference. No lift, running boards, roof rack or bed cover. I use cruise every where and I do take off quickly getting up to speed. I have put the tach near the top a few times. I think the best mileage was 24+ coming from Atlanta to Savannah in the early spring time.
 

· Registered
Joined
·
4,633 Posts
It is my daily driver and has been for the last year and half. My commute is 15 miles each way with 5 red lights, 2 stop signs and 2 railroad crossing each way. The last 4.5 miles in the morning are city, as is the first in the evening.
 

· Registered
Joined
·
479 Posts
Mine is a 2012, 52K miles with the majority being a mix of about 75% highway 25% urban traffic. Lifetime average is 18.9 mpg, all hand calculated. For highway driving with no stop and go traffic, average is 20.5 with typical speeds of 75+ mph on Texas interstates. Best I have seen is 23 mpg on a few trips where I was on roads with lower speed limits (65 max).

Observations:
- My truck's computer display of average mpg is consistently too optimistic (4% higher than the real number). The more stop-and-go involved, the worse the computer accuracy gets. On long highway trips where speed is pretty consistent the computer will be very accurate, same as hand calculated.

- Check tire pressure, I try to keep mine around 35 psi. I still have the stock Michelins, they haven't worn much at all and still look pretty much brand new.

- I always drive with the tailgate up.

- Stop and go traffic and idling lower the mileage VERY quickly.

- For my truck at least, "babying" it and trying to drive soft for higher mileage does not work at all. Taking it easy results in a consistent 2 mpg penalty, have never figured out why. Driving it with spirit gives the best results, I have my foot in the VTEC just about every day.

- One thing I do which I had not noticed until a friend pointed it out, is that when I am approaching a red light or turn from a distance, I often use the D3 button to slow down. I am manual transmission guy and have spent most of my life driving stick shifts, and I guess habit led me to use D3 that way. I experimented several tanks, and surprisingly mileage is consistently 1-2 mpg worse if I do not use D3 that way.

- I use cruise occasionally, don't see much difference in mpg.

- Mileage is worse in cold weather

- Mileage is worse in very hot weather when the A/C is working hard

- I use premium gas because I like the extra 10 hp, experiments with lower octane show about a 1 mpg improvement from the higher octane. Doesn't make sense to use it $$ wise, but I drive my truck with spirit and figure it is a cheap performance boost. Works for me.

- Truck is all stock, no cold air intakes or anything. All maintenance done by the Honda dealer with the specified fluids and lubes.
 

· Registered
Joined
·
42 Posts
Discussion Starter · #17 ·
Since this post, I haven't changed anything and believe it or not I've been able to get 2 tanks of fuel. (1 was strictly highway) at 17.0-17.5 MPG!

I'm pretty excited, I don't know if it has to do with the weather changing and it being colder so more horses. None the less, the only thing I changed was I drove like normal, not beating on the throttle but not taking it easy either.

I will continue logging MPG, and trying little things until I find the best mixture. I do appreciate all of the suggestions though!
 

· Registered
Joined
·
4,633 Posts
Since this post, I haven't changed anything and believe it or not I've been able to get 2 tanks of fuel. (1 was strictly highway) at 17.0-17.5 MPG!

I'm pretty excited, I don't know if it has to do with the weather changing and it being colder so more horses. None the less, the only thing I changed was I drove like normal, not beating on the throttle but not taking it easy either.

I will continue logging MPG, and trying little things until I find the best mixture. I do appreciate all of the suggestions though!
If you are going to log information, trying joining fuelly and log it there and you can see your mileage trends at look at your good and bad.
 

· Registered
Joined
·
1 Posts
Hi. I'm new to this forum. Have a 2010 and get in the 20 mpg range. Just curious, does your regular gas contain ethanol? If so that will result in poorer mileage than gas without ethanol (i.e., premium), as there is less energy in the ethanol-containing fuels. Love my truck!
 

· Premium Member
Joined
·
11,332 Posts
- For my truck at least, "babying" it and trying to drive soft for higher mileage does not work at all. Taking it easy results in a consistent 2 mpg penalty, have never figured out why. Driving it with spirit gives the best results, I have my foot in the VTEC just about every day.
.
I think there is something to that. It seems to favor getting up to the next higher gear sooner, within reason.
May have to do with the lackluster torque when starting out, drag it out too long and you are just staying in gear longer and not covering much ground.
Driving it more spirited seems to help as long as I don't drive like I am going to a fire.

I generally start off quick from a start based on where other cars are in relation to me. Seems like that's too fast, but it feels right so I don't think much about it.
 
1 - 20 of 22 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top