Honda Insight Forum banner

1 - 20 of 39 Posts

·
Registered
Joined
·
21 Posts
Discussion Starter #1
On my 18th birthday I got a car loan and flew one way from PA to North Carolina. I bought the car and drove it 8.5 hours to PA. This was on Saturday. Now it is Monday and over all my average MPG is only around 45MPG. I don't speed nor do I have a lead foot. I have checked the tire pressure when I bought it and all tires were 30 and under. I pumped them up to 38 in the front and 35 in the back. This didn't change anything. I do not have the bridgestone tires on it. It has sumimoto tires. The insight is an automatic with 100,000 miles on it. I am a sensitive driver and have tried numerously to achieve lean burn mode. Is there a video tutorial explaining it? Is there something wrong with my car? It is great exterior and interior condition. Please help...?
 

·
Moderator
Joined
·
6,916 Posts
First, get rid of the non-OEM tires and if you can't do that right away, pump them up to at least ~45PSI. When you do get the Bridgestones, run them as high as you feel comfortable, 45PSI minimum IMO. Many people run 50-60PSI. I run mine at 50PSI.

Second.. I hate to be a harbinger of bad news, but the automatic Insight does not have lean burn. That's why the manual transmission versions are both more desirable and capable of getting higher fuel economy.

Are you using the A/C? That will cost you 5-8MPG+.

It sounds like the tires are probably the biggest problem, assuming the car is mechanically sound. No error codes?

What speeds were you traveling?
 

·
Moderator
Joined
·
3,641 Posts
Hi and congrats on your purchase.

Did you buy the one in Wilmington?

Unfortunately, the CVT model does not have the lean-burn capability. Your car is however a SULEV, which pollutes even less than the 5 speed.

The non-OEM tires will account for some MPG degradation for sure. And with the CVT, you will not be getting 70 or 80 MPGs consistently like some of the experienced drivers in a 5 speed model may. I do have a 5 speed and I average 57-67 MPG (for the year). Better in summer, and on the lower end in the cold weather. I keep my tires at 50 psi.

Ensure you have the under body panels in place. Absence of these will hurt MPG.

Also be sure you have the 0W20 oil in your crank case and only 2.5 quarts of it. Do a search on CVT Trans fluid change, and consider doing that as well.

Recommend you read the "Encyclopedia" and "Knowledge Base" sections. Links are on home page. You will learn a great deal more about your special car.

All the best, and congrats again!
 

·
Registered
Joined
·
21 Posts
Discussion Starter #4
Reply

Thank you both for your quick response. I'm afraid that pumping my tires to that high of a PSI will run me at risk for blowing a tire. When I check my oil, I have much more than I should. If I were to purchase the OEM tires, how much of difference can you predict it will make? The tires that are on it are pretty much new. There are no signs of use really at all. Will OEM tires be expensive? Thanks!
 

·
Moderator
Joined
·
6,916 Posts
Do whatever you feel comfortable with of course, but be aware that max sidewall on the Bridgestone tires is 45PSI. That's the minimum you should run, IMO. Like I said, many people run 50 and as high as 60PSI.

Ugh........ Freaking idiots! This is why I do all my own work. Get the excess oil out of there immediately, and make sure the proper oil and quantity is put in. How far over the Full line is it? If it's only a couple of millimeters, don't feel rushed. If it's way over the line, do not drive it like that as you risk blown seals.

The bridgestone tires can make a profound difference. It's difficult to say, but you could see up to +10MPG with them depending on how crappy your current tires are. Does it have the OEM wheels?

A new set of bridgestones will run you around 500 bucks.

What kind of MPG are you expecting from the car? Also, you never answered - were you using your A/C on the drive home, and how fast were you traveling?
 

·
Registered
Joined
·
21 Posts
Discussion Starter #6 (Edited)
I was traveling around 70MPH as an average because some of the speed limits went up to 75 and as low as 55. I used the A/C the entire time. I bought the car from Raleigh, NC. ;-)

I'm expecting around 65MPG..
 

·
Moderator
Joined
·
6,916 Posts
That explains everything.

70MPH, A/C and wrong, underinflated tires = 45MPG in a CVT. :)

Slow down to 55MPH, turn the A/C off and get the proper tires(at least inflate to 40psi....), and that number will likely come up to ~60-70MPG.

It is about a 1/2 inch over...
Ugh, yeah, don't drive it like that. At the very least drain some of that out, but it would be better to put 0W-20 in it so you know whats in it.
 

·
Moderator
Joined
·
3,641 Posts
Concur with Eli.

I would think 10% improvement of MPG with OEM tires.

There have been blow-outs with sidewall failures of the Potenza tires. (there are some pics on IC) Like I said, I run 50 psi.

New Potenza RE92s run about $85 a piece, plus shipping. Local tire shop may be able to get it installed for you for $100 a piece.

Read the owner's manual and be sure you understand the climate control functions.

Good luck.
 

·
Moderator
Joined
·
6,916 Posts
Are you going to be changing the oil yourself, or using a place like Jiffy Lube? They're likely the reason your oil is overfilled in the first place.

I went to Jiffy Lube ONCE because I was in a rush, about to drive 1400 miles and wanted to change my oil before the trip.

They overfilled my car by at least a quart(which thankfully I checked before I left), AND they stripped the threads in my oil pan(which unfortunately I didn't realize until the next oil change). I was so furious, and vowed never to use any such place again, ever.

Be careful, the world out there is extremely unfamiliar with our cars. That includes Honda dealerships.
 

·
Registered
Joined
·
21 Posts
Discussion Starter #11
Thank you so much guys! The lifetime MPG on it was 53.1MPG. I will have an oil change and pump up my tires to around 45. Should it be 45PSI all around? I can't afford a new set of potenzas yet. I have some money left over but I'm waiting for a bill in the mail to pay taxes on the car in PA because I didn't pay for them in NC. I will have deal with the tires I have for right now until I know where I stand with this car loan I took out. lol I just could not wait for this car. I was researching the car for months and fell in love with it.
 

·
Registered
Joined
·
21 Posts
Discussion Starter #12
Are you going to be changing the oil yourself, or using a place like Jiffy Lube? They're likely the reason your oil is overfilled in the first place.

I went to Jiffy Lube ONCE because I was in a rush, about to drive 1400 miles and wanted to change my oil before the trip.

They overfilled my car by at least a quart(which thankfully I checked before I left), AND they stripped the threads in my oil pan(which unfortunately I didn't realize until the next oil change). I was so furious, and vowed never to use any such place again, ever.

Be careful, the world out there is extremely unfamiliar with our cars. That includes Honda dealerships.
Lucking my father is a mechanic and owns his own garage. I will have him take a look at this thread and he and I will go to work..lol
 

·
Moderator
Joined
·
6,916 Posts
I hope you're not too disappointed that your car doesn't have lean burn mode. It sounds like you really wanted a manual transmission overall, the way you describe being a careful driver and such.

Having access to a garage like that is a definite plus.

I was going to ask what the LMPG is, and 53.1MPG is fairly reasonable for a CVT. I wonder if they just replaced the Bridgestone tires with what you have on it?

But yeah, you're going to have to slow down and/or not use the A/C to get it back up into the 50s most likely.

It's actually a big problem.. New users like you come along and see peoples 80, 90 and even 100MPG tanks and think "Wow, this will be great!"

It isn't the whole story, though. It takes practice and technique to get those numbers, along with sacrificing speed and amenities like A/C.

Here's a recent thread I posted about a road trip in my 445k mile car:

http://www.insightcentral.net/forums/honda-insight-forum-1st-gen-discussion/20065-insight-444-000-miles-first-roadtrip.html

It's a manual so not really comparable, but just kinda take a look at the trip statistics. My maximum speed was like 75MPH to be able to pull those type of numbers. :) lol

These are amazing automobiles, congrats on your purchase.
 

·
Registered
Joined
·
2,425 Posts
I'm afraid that pumping my tires to that high of a PSI will run me at risk for blowing a tire.
The burst strength is something like 200+ psi.

The "MAX INFLATION PRESSURE" is embossed on the sides of the tires. The tire manufacturers consider that to be the max and min tire pressure to have properly inflated tires. Most tires are rated at 44psi
 

·
Registered
Joined
·
21 Posts
Discussion Starter #15 (Edited)
modified mildly

Alright, so I pumped up the tires to 45PSI all around. I changed oil filter and oil with 0w-20 synthetic. I also kept the windows open with no AC on. I was able to achieve an avg of 70MPG on my way to work today. I drive about 8.5 miles to work each way. Can you imagine if I put the Bridgestone Potenza's on. I suppose 8.5 miles isn't too accurate because it isn't too long. My trip to work includes a major interstate highway with speed limit around 55MPH. Then, a city with speed limits 25-35. So excited!

http://s62.photobucket.com/albums/h103/50sgreaseman/?action=view&current=IMG_20110802_160001.jpg
 

·
Moderator
Joined
·
6,916 Posts
There you go! :)

Now you're starting to think like a hypermiler. ;)
 

·
Premium Member
Joined
·
1,658 Posts
On the plus side you are still only 18! Enjoy it while you can...never turn down an opportunity...

and you have a great car.
 

·
Registered
Joined
·
303 Posts
My 2006 CTV has a lifetime average (230,000) of 60.5 MPG 99% [email protected] 60MPH 45PSI on OEM tires AC on in the daytime summer. Rain will lower mileage into the 40's Headwinds are killers as well (18 years old "well there's the problem") :)
 

·
Registered
Joined
·
12 Posts
I am LOVING these Bridgestone Potenza RE92's!!!!

Long story short: I bought my 2000 Honda Insight about 2 months ago. It's a 5 speed with 34,000 miles on it -- practically new. However I kept running at 46-49 MPG. Found out I had on Cooper Tires 175/65 R14.

Finally took everyone's advice seriously. Went to Costco and bought my Potenza's. CostCo is running a sale right now. $70 off a set of four tires, plus $30 off installation fee. That's $100 off! The total came out to be $320.09. The sale goes through August 4 so you better hurry. They didn't have them in stock so I had to wait until they were ordered. But you can still buy them now and receive the special deal.

I told the crew to inflate it up to 44 PSI, because they will not inflate it above what the max PSI is on the tire, for liability reasons. Still, I was excited to see what improvement I had on gas mileage.

I drove home on a 12 mile stretch of highway. I had the windows rolled up, the A/C off. I got 71.2 MPG! Awesomeness!! Thanks everyone for the tips.
 
1 - 20 of 39 Posts
About this Discussion
38 Replies
10 Participants
Eli
Honda Insight Forum
We’re the ultimate Honda Insight forum to talk about Honda’s hybrid car and its fuel economy and specs!
Full Forum Listing
Top