Toyota - Prius :: Slow Acceleration / Gas Mileage Down
Mar 17, 2013
My 2010 Prius since new, during cold Central IL weather, when I pull out onto the city street, it accelerates VERY SLOWLY no matter how I work the accelerator for 1-2 blocks. Then it takes off normally. When I forget to allow the extra time, it can be scary to have a car coming up fast and not be able to accelerate. I have left it at the dealership for 3 overnights now over 3 years. They went from "couldn't duplicate" to "there is a slight hesitation" that they attribute to normal shift from electric to gasoline. The next morning it took 2 blocks before it kicked in. My gas mileage has only been 35 this winter; I don't believe it has ever been consistently that low.
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2007 Sonata GLS - I4; 55kmiles ... I plan to sea foam on my Sonata as it continues to have slow acceleration and poor mileage. Looking for a picture of the Brake Booster or Vacuum line? I want to make sure I am pouring it in the right place.
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I have Toyota Camry 2011 4-dr LE. While I was on a road trip recently, the car did something very odd. The vehicle started to cut out and it then stopped. I have to note that it was at a high altitude (somewhere in the Colorado Mountains). After the incident I was able to start up again and the vehicle operated as expected. This is not the problem I wanted to ask about, however I thought I would mention it in case you think it might be related.
Here is the problem I have: When coming to a slow stop or driving in the slow traffic, sometimes the vehicle seems to accelerate when the break is released, as if I have pressed the gas pedal. I would expect that once slowed down the Camry will maintain its speed. Other times while my foot is still on the brake pedal (lightly pressing it during a slow down) I would feel as if I have released the brake for a second and the car accelerates (at which time my reflexes kick in and I press the pedal harder). In addition, the transmission seems to hesitate on up shift. I have noticed multiple times that the transmission does not shift on-time and I could feel it when I drive slower.
So here is my question: Could the problem with acceleration during braking be also related to transmission down/up shift problems? Since the problem with brake malfunctioning and engine acceleration is very infrequent, when I took the car to the dealer they could not find anything wrong.
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I'm a new 2007 Prius owner, and I know that the Prius is no sports car, but this acceleration is very slow. When I'm speeding up to get on the highway, it really sounds like the gasoline engine is working hard to get up to that speed. I've had cars in the past where the emergency brake gets stuck, can that be a probable cause, or is this type of slow, strenuous acceleration normal for the little Prius?
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It's a hot 110 degree day in my 08, we have 5 in the family. Parked for three hours and on return starts up normally. Noticed low torque and slow acceleration on take off. Got on the freeway and slowly got up to 65MPH with obviously only the ICE working.
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I have a 2010 Prius Pkg 5 with around 71xxx miles. I usually drive it like a regular car on eco mode and get around 38mpg average but recently I've changed my style of driving where I accelerate to the desired speed limit, let go of the gas, then reapply and keep the mpg meter in between the middle eco line and before the pwr band. I've been able to average 44mpg this way, which is great!
However, what I've begin to notice now is that say if I'm traveling at say around 45mph and let go of the gas and re-apply, the engine starts to shudder as if it's not getting enough gas. Why this is happening? I also need new tires (215/45/17) but that doesn't have anything to do with this. I've owned this car since 30xxx miles and haven't done anything other than put gas and change the oil at the dealerships. Could putting 87 octane gas with up to10% ethanol have any effect on this?
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My prius 2010 (III) accelerate much slower than before. I started noticing this after I picking up my car from the airport. Parked the car there for a week. I have the dealer checked the computer but no error codes found. My car has almost 250k KM on it. I have not replaced the spark plugs the last three years. Could it be the spark plugs?
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I bought a 2012 Prius new and averaged just under 53 miles per gallon for the first 15,000 miles regularly. I have a long commute so my driving mix of city/highway is pretty consistent. When starting the car one morning there was a fairly loud series of clicking sounds from the engine compartment, which then stopped. From that point forward the mileage has dropped to just under 50 mpg. Same driving habits. I am bringing the car if for it's 20,000 mile check up shortly. Any ideas if something happened to the battery I should ask about? It is still under warranty.
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I have a 2005 Prius with 110,000 mi. Sometimes when I accelerate the ICE (gas engine) simply spins (as if the clutch was slipping in a convention car) and there is little acceleration and the gas engine doesn't shut off when coasting or braking as it always has in the past. The battery screen shows it is not charging when this happens and is at 1 bar (purple). then sometimes the hybrid battery gauge will go from 1 bar to fully charged (green) in under a minute or 2 and then show discharging just as fast which isn't possible. It goes away after a restart sometimes but then happens again soon. Is it the TP sensor, Hybrid battery computer or ? I have gotten all kinds of codes including P0a93, P0a80, P1400, P040a.
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The prius stock battery is weak compared to my wifes Mercury Mariner battery. The Mariner acceleration on battery alone is excellent - she can get up to 30 mph in no time on just the battery. In my prius it has very slow acceleration at a dead stop while running only on battery. Is it possible to buy aftermarket (stronger) batteries for the prius so I can at least driver the car up to 30 mph only on battery?
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I have a 2005 with 165K on it. Just within the last 2 weeks, at start up, no matter what level the charge shows on the display, the HV battery will almost fully discharge and then come back up to full charge within a mile of driving. I just replaced the 12V battery thinking this could have been an issue, but it didn't change anything. The car never acted like this since I bought it in 05. When it drops to the discharge level, It running on ICE only, with the typical slower acceleration. What could be going on?
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I just replaced the head on a 1997 Saturn SL2 due to it running rough and low compression on one of the cylinders. It idles very smooth now and has at least 160 PSI on all 4 pistons. The problem is that it surges as you are accelerating slowly, gets poor gas mileage and it seems that the oil level is raising on the dip stick. I'm guessing that gas is some how getting into the oil.
I checked the spark plugs for carbon build-up which would indicate a rich gas mixture but they're clean (lite tan color). I also replace some of the vacuum lines where I found cracks, but I may have missed a few. Overall the car seems to run pretty good. The problem is that this is my daughter's car who lives 10 hours drive away and I don't want to stick her with any problems. I don't want to take it to a dealership where they'll charge me a lot of money but my mechanic that I normally deal with doesn't know what to do with it since there aren't any fault codes on the computer.
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Toyota says the code is P0420 and the Catalytic Converter is rattling under heavy acceleration showing the Catalytic converter is bad and should be replaced. Toyota wants 2,334.00 which seems very high to me. Is it the Catalytic converter? The car is a 2004 Toyota Prius.
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I bought a used 2008 Sonata GLS with 65K miles 2 years ago. It's been a great car so far. For the first 25K miles that I drove it, it had good pickup and got ~30 MPG for my highway driving. In the last ~5K miles, the fuel mileage has dropped to 25MPG highway and it has some hesitation when accelerating, especially on lower RPM's. I changed the spark plugs with NGK Iridium, but it is still having the issue. What to check?
Some possibilities: ignition coils, sensors, timing belt, etc?
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I own a '90 Honda Accord and it constantly shakes, has poor acceleration and seems to use too much gas. I thought it was the catalytic converter and I installed a high flow cat. The fuel pump went out so I had that replaced. It shakes less since replacing the cat but I still see the gas gauge go down too low when I press on the gas and the car will stall and stop as I get to "E" when normally I was able to drive many miles past "E". Any guesses? I'm wondering if I need to replace the fuel pressure regulator.
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We bought a 2015 Corolla LE Plus this past weekend. The tank went from full to ¾ full after 38 miles of city driving. The onboard MPG calculator said it was getting 16 MPG (it’s rated 29 city/38 highway. When we took it back to the dealer the sales consultant said that’s normal – that it would improve after it got “broken in”. The car mechanic who I have taken all my Toyotas to and who has only worked on Toyota for the last 30 years says plus or minus a couple MPGs would be reasonable but not minus 13 MPG.
We drove it another 400 miles to “break it in” and during this breakin period it did get close to 38 MPG when we drove on the highway. Then I topped off the tank with gas, recorded the odometer mileage, zeroed out the onboard trip mileage recorder and the MPG calculator and my wife drove 61 city mileage. The onboard MPG calculator said it was getting 16.8 MPG and 61 miles divided by th3 3.854 that it took to top it off again = 15.8 MPG. Either way I don’t think the mileage should be this bad.
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I just bought a 2003 Tacoma 2.4l engine and it has terrible gas mileage.I haven't checked the numbers yet, drive for but it cost medrive for 2 hours. Where do I start looking? The air filter is clean, the tires have plenty of air.
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I'm looking at an extremely low mileage Truck. Original owned it for 3yrs drove it 200 miles. Sold at auction and now has almost 300 miles on it. It is a 2007.
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I am all of a sudden getting really bad gas mileage on my truck and have no power. The "check engine" light was on and I changed the O2 sensor, and the light went off, but am still getting about 15 miles/gallon as opposed to the 22 I was getting. Changed my spark plugs about 1 year ago.
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I recently picked up a 2012 Passat. I love it. Comfortable ride compared to my Volvo, looks amazing from the outside and, well, its a VW - always loved them.
So, my only question is about the acceleration. It tends to be a bit slow on takeoff. Its hard to explain, really, but it creeps a bit and then I find that I need to push relatively hard to get the RPMs up to get the car to accelerate. Ive never had this type of issue in a car before so I thought I would ask to see if this is normal. At first I thought it was maybe a gas saving feature. When I use Sport Mode or Sports Shift it accelerates fine with no issue.
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I recently bought a 2002 VW Passat 2 weeks ago. I love the car and the drive, but the acceleration is excellent at times, and very slow at times. Also the car gives me a stutter step every once in a while while at low speeds....I bought the car in Mass so I have 13 days left for the dealer warranty. What it is?
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