Subaru - Forester :: 2004 - Gas Mileage Sudden Drop
I have a 2004 Subaru Forrester with a 2.5L engine (non-turbo) and about 137,000 miles. I usually get just a bit more than 300 miles on a tank of gas. About 3 weeks ago, I took the car for a major tune up (and they also replaced a valve cover around the spark plugs area). After the tune up, the car was running great and I was still getting about 300 miles to the tank. Within the last 10 days, I noticed that the gas mileage on the car has decreased - I am now getting closer to 250 miles per tank. The mechanic rechecked the fuel lines and test drove the car two days ago but did not see any signs of leaks. The weather was near freezing for about a week but has warmed up again to the 40's. My driving habits have not changed and I am driving the car the same way as before. I am stumped as to why the gas mileage would drop that much. What might be happening?
View 8 RepliesPrius (2010-12) Fuel :: Sudden Drop In Gas Mileage
I commuted to LA 2-3x a week. The mileage on my car is now at 90k. I have had an average of 40 mpg since new, but suddenly it began to drop. We took it to our local Toyota dealer and was told it was most likely a cable that needed to be cleaned. That was $160. It didn't work.
View 10 RepliesPrius Plug-in 2012-15 :: EV Mileage Sudden Drop
I was driving up a hill today at about 30 mph with .9 miles remaining showing on my EV battery meter when all of a sudden it drops to 0 EV miles remaining and shows only 2 of the battery level bars (which is very very low), and the engine of course turns on. What happened?
I promise I did not push the EV power bar over its threshold. I monitor that like a hawk. I also know for a fact that it jumped from .9 to 0, because I watch that part like a hawk. This part of the trip is near the end of my drive home and I've done it about 50 times so far with no issues. With .9 miles left at that point on the hill I have always been able to make it to my driveway with .4 or .5 remaining, so this is very odd.
Prius (2010-12) Fuel :: Sudden Drop In Mileage
I am using a 2012 Prius and I was running around 23KMpL average. For sometime I am seeing my mileage around 17 - 18 KMpL. What could be the reasons for this ?
The only change happened in between is that I had a accident which I had to replace the front buffer.
Passat (B6) :: Sudden Drop In Gas Mileage?
I have an 08 2.0T and it just suddenly had a huge drop in gas mileage. I recently had new tires put on and an oil change (about 35k miles). getting closer to 40k miles now and wondering what could be causing this. Usually I get about 30-33 mpg easy on the highway. Now I'm getting 24-26 mpg. Already checked the tire pressures. they're to spec. no gas leaks from what i can see.
View 6 RepliesSanta FE SM (2001-06) :: 2003 - Sudden Drop In Gas Mileage
My 03 (129k miles, 2.7 AWD) is up to date on all maint (this summer saw new timing belt etc., transmission service) and oil is current. Spark plugs are due at 131k. Air filter is new, tire pressure maintained at 30-32psi.
MPG has consistently been ~20, slightly more on trips. October 27 to November 26 was 19.8 mpg. Putting on brand new snows (General Altimax Arctic) knocked it down to 17.5 mpg for the next ~250 miles. However, since early December it's dropped again to 13 mpg!
Mechanic just checked for brake drag (none - rotating one wheel turns all 3 others easily); no pulling, rolls well in Neutral. No engine symptoms (missing, bucking) or CEL lights. Power seems a little diminished (for instance, it takes longer to shift during acceleration sequence).
I will add my Lucas Oil gas treatment just in case it may be injectors. My mechanic says he has seen MPG suffer from certain gas brands (and I do wonder if the tank fillup after which the MPG dropped had something to do with it).
Hyundai - Elantra :: 2012 - Sudden Drop In Gas Mileage
Why all of a sudden the mileage indicator on my 2012 suddenly dropped about 5 miles/gallon, both highway and around town? The car has only 9000 miles on it. Has there been a service bulletin regarding the "Eco'" mode? Having the "Eco" mode on or off doesn't seem to make a difference.
View 8 RepliesElantra XD (2001-06) :: Sudden Drop In Mileage And Hard Shifting
All of a sudden my fuel consumption dropped from 28mpg as read from the computer display in the dash, to 21mpg. This was not a gradual drop, it was at 28mpg one day and 21mpg the next day. There is no service light on, do these cars produce codes that don't trigger the service light?
A few months ago the vehicle was getting stuck in various gears and lunging, this was from battery corrosion dripping down and eating away at the transaxle range sensor. I cleaned up the battery and replaced the range sensor and the vehicle was driveable again. It re-learned the shift timing and seemed to be ok, then about a month ago it seemed to be forgetting the learned shift positions after sitting over night, I replaced the battery, thinking it was in a marginal state where it would forget the program while sitting. The shifting is still hard sometimes but this seems to have worked but, now my mileage is horrible.
I thought I'd just change out the oxygen and air flow sensors but, then looked at how much they cost now, and realized this would be some costly trial and error. Is there a methodical way to troubleshoot this issue, any way to pull the sensors and measure them?
Prius (2004-09) :: 2007 - Sudden Drop In MPG?
Our 2007 Prius had previously been averaging high 40s MPG but the past few weeks has dropped to around 38 and won't move much higher... we are using the A/C a little more than the past few months but not on full constantly or anything like that... first time I've seen MPG this low since we've owned the car (20 months).
View 19 RepliesPrius (2004-09) :: Gas Mileage Drop After New 12v Battery
I replaced my 12V battery yesterday with the Optima yellow top. immediately after, my gas mileage dropped to about 16 mpg.
View 9 RepliesPrius (2004-09) Fuel :: Unexpected Gas Mileage Drop
I've had my 2007 Driftwood Pearl Package 2 Touring a little more than a year now. I had been getting 42-46 MPG every tank until I filled up my gas tank today.
View 19 RepliesPrius (2004-09) :: Battery Is Dying / Huge Drop In Gas Mileage
Well I work overnight security and I'm able to watch movies in my car or be on my laptop at work but I ruined my battery( didn't have the car engine on) and now that my battery is dying I noticed huge drop in gas mileage .
View 18 RepliesPrius (2004-09) Fuel :: 2008 - Sudden Drop In Fuel Economy - Water Leak?
I have a 2008 prius. Usually it gets me around 52-55mpg, I've had it since January. Since a couple of days ago its not giving me anything above 49. I know thats a normal number, but considering the fact that its usually quite a bit higher I'm wondering what the cause of the drop is. Also around the same time, when I pull out of my driveway I notice what appears to be a bit of water leakage. Its under the vehicle in the front center, and it only happens when I start the car for the day and pull out of my driveway (its on an incline).
View 4 RepliesPrius (Gen 3) Fuel :: Sudden MPG Drop From 54 To 41
So yesterday, I reset my trip meter when I put on gas. I did a 7 mile drive home (no highways) MPG was around 54. This morning, my husband pulls the car from the garage to the driveway to install my name plates. When I start the car, I noticed MPG was 41. What could have caused the sudden overnight shift from 54 to 41. I only drove 3 miles to work since then so it is hovering around 42. Could the cold morning start to back up from garage did something? Could he have left the power switch on (and it shut off automatically).
View 6 RepliesLexus RX 2004-09 :: Sudden Drop In MPG On 2007 RX350
I have a 2007 RX350, now at 110K miles, bought at 80K miles. I recently notice a sudden drop in mpg about 5K miles back (it might happen before that but I did not notice). Previously, the car gets around 25MPG on average, now it can only get 21 - 21.5 mpg, my range of a full tank drops around 60 miles. My route of driving everyday is pretty much the same. I have tried to change gas branch, using fuel system cleaner (Chevron Techron), check tire pressure but no luck.
What might be happening with the car that makes this significant drop in mpg?
I changed power steering rack and pinion at a dealer also about 5k miles back and at that point I had a dispute with a service consultant there. He made me drive back and forth a couple times without telling me that the part hadn't arrived yet (the car was on extended warranty). I then emailed directly to his boss. After that he treated me really well: gave me a most recent model loaner car for a week and did not charge for gas, and waived the deductible. Now I notice the MPG drop so I kind of link with this event and put him in doubt . Well, I'm not sure if he could do anything to the car since he's not the technician but still ... Can a guy put something to a car to reduce its fuel efficiency?
Ford F-150 (2004-2008) :: Getting A Big Drop In Gas Mileage?
Drive a 2004 Ford F150 4.6L V8 EXT CAB. It has 71,000 miles on it. Truck runs great, doesn't stall or miss and idles good but my gas mileage lately has been very bad. Oil, air filter and fuel filter have been changed. What could cause this?
View 14 RepliesPrius (Gen 3) Fuel :: Mileage Drop (0.8 Mpg) While Not Moving
I turned on the car, CONS showed 56.0mpg,
backed out of the garage (about 20 feet) 55.8 mpg,
waited for the garage door to close 55.0 mpg (ICE started),
got to the end of the street (about 200 feet) 54.0 mpg
outside temp was 51F, humid, cloudy
had about 90 miles on new tank of fuel
I know you get big swings in fuel economy when you reset the trip on fill ups but I just thought it was funny that the mpg would drop 0.8 mpg while not moving.
Prius (2010-12) Fuel :: Gas Mileage Drop - Averaging Between 41 And 43 MPG?
I bought a 2010 Prius II (150,000 miles on it) about two weeks ago. In that time the car has been averaging between 41 and 43 MPG according to the computer, and I calculated 41.3 MPG at my last fill up. I am concerned about the MPGs. I bought a brand new Prius in 2012, it was a III model and '12 year. That car always got 48 highway, and 50 in the city. From what I understand, the 2010 and 2012 models have the same engine and transmission set up and the only difference may be the software.
So my questions are; why am I getting 7 to 9 MPG less than my old (newer) 2012 Prius? What to do to get better mileage, but what actually worked? My checklist of repairs include; check 12v battery, change out spark plugs, just changed air filter, check brakes, oil change (using Mobil 1 full synthetic 0w-20), what else should I check/replace/update,
Prius (2010-12) Fuel :: Why Does Mileage Drop At Least 2 Mpg When Raining
It seems that my mpg gauge always drops by at least 2 mpg when it's raining, even if one goes slower because of the rain. Why is this?
View 19 Replies