Last post on Jan 31, 2013 at 10:16 AM
You are in the Toyota Prius
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Toyota Prius, Fuel System, Hatchback, Sedan
#34 of 114 First Gas Fill-Up
Apr 30, 2008 (9:11 am)
First, let me say that the input I have read here is most valuable information and it's groups like this that keep us, the consumers, well informed.
IToday I saw that my gas tank was at half full. Last Friday, I picked the new car up from the dealer (Prius 2008) and they had the tank filled upon delivery. Ok, so we are at 1/2 of a tank of gas and the total miles to date is 117. My first concern in that if a half of a tank is approximately 5-6 gallons, and I went only 117 miles, the gas mileage realized was close to 20 MPG. HOWEVER, the consumption meter shows an average of 44 MPG. Ok, I have read that I need to give this time, etc., which I am willing to do.
However, today, on 1/2 of a tank, I decided to fill it up. I started filling it in the usual way, and the gas cut off at under 3 gallons. I had read the above posts last night, so I was sort of expecting this problem to occur. I repeated this several time, trying to fill the tank, but it kept clicking off. I then proceeded to fillit ever so slowly, guessing that I had better stop at approximately 5 gallons. I was very concerned of a back-flow, and didn't want to have a mess of gas on the ground.
I drove right to the service section of the Toyota place where I purchased this car last Friday, and the service Mgr. told me to bring it right in when I get down to 1/2 to 1/4 of a tank, and they would see if their attempt to fill up would be a problem as well. While I was waiting for the Mgr, I asked a fellow who had purchased the same car a few months ago. I asked him if he had the same problem and he said he did not. There is an obvious problem here. I don't think one should "guess" at how much fuel to put into the car. I love the car but I am starting to pray that this is not a lemon situation. I would appreciate any input. Thank you
#35 of 114 Re: First Gas Fill-Up [rolin]
May 01, 2008 (7:50 am)
When I bought my car April 07, I never had a problem filling it up. The most I put in was 10 gallons and that was with 1 bar still showing. My mpg started out at 37-40 and has gradually gotten better. I am now consistent at at least 45 or better. Mileage will improve as the car gets broke in. I did not have any problem till the end of Oct into Nov. As it got colder, the amount of gas I put in went down to 8-9 gallons but my mpg was consistent with the amount of gas I put in the car. That changed in December. I was getting 400-450 miles per tank an I went to under 300 per tank. If you look in your owners manual at the gas tank specs, it will say an 11.9 gal tank with a shrinkage of the interior liner of the tank up to 1.3 gal in temps 14 degrees or below. Needless to say, mine shrank a whole lot more than that. The most I can put in now is 7 gallons and it is 80 degrees here. Do not let them tell you this is normal, it is not. I know this cannot occur on every Prius out there or nobody would be happy. Maybe you have one with the same problem as mine, but I hope not. The benefits of this car still far outweigh the drawbacks. I am replacing it with the same car again and hope I do not have this problem again. If so, we'll just go another round this winter. If I had bought the car used, I would have lived with it. Like you, I bought a new car and expect it to perform like a new car should.
When you said you put gas in it, did it take 5 gallons to fill it up or only 3 that you put in? There is a problem with the flap in the tank as you are filling up, it cuts off. I haven't had this problem. If that is the case, then your consumption screen with the mpg could be reading wrong. Any way you look at it, something is not right.
Hope this helps you. Let me know what they tell you. Thanks.
#36 of 114 Re: First Gas Fill-Up [sherry9]
May 01, 2008 (2:12 pm)
Thanks for the quick response, it is appreciated. To answer your question, the 5 gallons were put in after the gauge displayed 1/2 of a tank. However, the gas pump stopped as I was fueling, only allowing 2 plus gallons. I then slowly added more, and finished at 5 gallons. The gas gauge then went to the full, with all the bars lit.
After filling the tank, I set the trip odometer to 0 to see track my mileage. Since I have filled up, I have traveled 89 miles, and the gas meter gauge, still displays all the bars, indicating that I have a full tank. The consumption meter is showing an average of 42 MPG. Is this possible that the gas gauge bars have not decreased yet? I am getting sick at heart thinking that between the gas filling up problem and now the gas gauge still appearing full after almost 90 miles, that I have made a big mistake. I hope that there are people here, that know more than I, that can help to ease these fears.
Thank you again for your answer.
#37 of 114 Re: First Gas Fill-Up [rolin]
May 02, 2008 (7:15 am)
It sounds to me like you have a problem with the flap when you fill up. Your gas gauge is reading correctly because 1/2 a tank should be about 5 gallons. When mine was working properly I could go 100 or more miles before it dropped off full and then about 40-50 miles for each bar after that. If you read back through the other messages, you will see where other people have had that problem. It's not a big problem so much as it is frustrating. Definitely take it back like they said to have it checked. You really haven't made a big mistake by buying the car, it just takes some getting used to. It did for me, anyway. But really, it is a great car. Good luck with it.
When I first started having problems, I asked everyone I saw driving one of these cars if they had had these problems too. When you see people, ask them about it and if they like their cars or are having any problems. This will also help ease your fears.
#38 of 114 Re: First Gas Fill-Up [sherry9]
May 02, 2008 (2:38 pm)
Thank you, again, Sherry
If this is the worst I have to deal with, it's definately worth learning how to fuel-up the car. I must say that I Love this car, and today, I saw my average MPG at 48.6!
I will bring it to the dealers service people when it needs a fill-up as they requested me to do. I will also keep in mind the "flap" that you mention.. Great Point! My only complaint, is that the "bladder" type of fuel tank is left to us to discover on our own, and worry, perhaps needlessly.
Many thanks again
#39 of 114 Re: Bladder issue really worth getting upset over? [sherry9]
May 05, 2008 (7:37 am)
I agree completely with the last post. A car that will not accept the total fuel capacity is malfunctioning. I am now in the process of purchasing my new Prius so have not yet experienced this. I hope I don't. My commute is 450 miles per week and I expect to have to fill up the car just once per week.
#40 of 114 Re: Bladder issue really worth getting upset over? [railroadjames]
May 07, 2008 (9:38 pm)
I agree. After 30 months and 75000 miles I always drive til the last bar blinks then I know that I have 100 miles at max to go. Unfortunately, and not smartly, I have tested this limit of the envelope.
When I do as you and fill up immediately at the first station after the bar starts blinking I always put in 9.5 to 10.3 gal. All my records are posted at GreenHybrid, every tankful since day one.
My 'trigger' is the correlation between the miles driven that tank and the average estimate on the MFD. When the miles driven are 10x the average then I know that I have to put in about 10 gal.....then suddenly the light starts blinking .... and I end up putting in about 10 gal, week after week, month after month, year after year.
2005 Seaside 74,890 mile and 47.8 mpg lifetime average
#41 of 114 Re: Bladder issue really worth getting upset over? [scubadog]
May 07, 2008 (9:42 pm)
Depending on where you live and drive and how you drive your 450 mi estimate is pretty good.
But IMO here is why the bladder issue is somewhat of a tempest in a teapot. It is annoying when it occurs. When you can only add 8 gal when you know you should be putting in 10 gal. But this doesn't affect the fuel economy one bit. It just means a slightly more frequent stop at the pump. One would be getting 45-52 mpg on 8 gal iso 10 gal.
#42 of 114 Re: Bladder issue really worth getting upset over? [kdhspyder]
May 08, 2008 (3:09 am)
I had this issue come up for the first time this winter, since 2004. I was pissed because the meter showed about half full, I couldn't get any more gas into the tank and I didn't know which was incorrect. I think the gauge was under reading and the tank was close to full although it could have been the other way around. I drive very little in the winter, so I waited until I racked up 250 miles, and the gauge was near empty, (by that time it had warmed up outside) and then filled up with 6.5 gallons and the gauge showing full. Had I gone on a long trip, I would have put a 5 gallon gas can in the back just to be sure. It has been a few months with no problem. We're doing a 1,250 mile drive to Chicago in a few weeks and I don't anticipate any problem other than the Mississippi flooding. I will take a full size spare with me since I had a flat in the middle of nowhere last year (on the original tires with about 20,000 miles on them). I had to buy one tire and rim to finish that trip since I already had a set of four new tires that I should have put on before leaving home.
I do love the car itself and the great mileage. My neighbor has a Lexus. Last night I showed him how to check the mpg. It was 13.9 on the screen since his last fill up.
#43 of 114 Re: Bladder issue really worth getting upset over? [stevegold]
May 08, 2008 (7:42 am)
I have the same problem with the tires on mine. I have almost 22,000 miles on it and my tires are shot. Still, I love this car. My new one is on a ship now and I will have it by the end of the month. Hopefully I won't have the same problem with the gas tank again.