Prius (Gen 2) Fuel :: MPG Decrease And Coasting Not At 99.9
Dec 2, 2010
I had my 2006 Prius (108k miles) shipped (on the back of a flatbed) from Los Angeles to Seattle in mid-October, and I noticed a drop of MPG pretty quickly. I went from 46mpg to now 34mpg over the last month, over 3 tanks of gas.
I have Goodyear tires, but I don't know the make of them (I remember they were 'High Efficiency' or something, meant for fuel economy) and I checked the PSI and it was 36 front, 34 rear. At first I thought it must be the tires but they seemed fine.
Then I thought it was the cold weather, but really the change in temperature wasn't very dramatic (until last week) as I was on the beach in LA where it was typically 65 and the past month in Seattle it would be typically 50-55 (this past week notwithstanding!).
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Recently returned from trip from Austin Tx to Monroe LA. Gas mileage decreased from about 43.3 MPG to 38.5 MPG. A little annoyed by this but I guess I can attribute this to the increased weight in the vehicle. Still taking care in for other thing. Maintenance needed light came on & I assume it may be for a 15,000 mi checkup since it is nearing that mark.
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Since I got Prius I've noticed that driving at 50mph returns 80+mpg , 90+mpg if I let it gently glide at -1mph per 1 mile. As it gradually slows down, the mileage starts to decrease. By the time I get down to 45 mph the mileage shows around 70mpg,
I get down to 40mph, I'm only getting 50mpg. When I keep my speed between 40 and 45 I get about 52-55 mpg for the day. If I keep my speed between 45 and 50, I get 55-60mpg for the day.
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I don't have a lot of data yet, but the last couple of times we had temps over 80F, my mileage took a significant hit - about as bad as when temps are below 20F (more than 10%)... Shutting off the A/C doesn't change things much...
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When I go out to do errands around town (I live right in town) I get horrendous gas mileage. Now, I understand gas mileage is high at the beginning of a trip, but for this long and this high and under these circumstances? I'm getting ABOVE 10l/100km when I have 80% charge available (for americans, that's disgustingly high MPG like, pick-up truck high), AND my foot is completely off the gas. Literally, coasting, or braking, and I'm still sucking up gas. What the heck?
Is this just because it takes a certain amount of time for the engine to run no matter what or something? I still don't see any reason for me to be eating up all that gas when my foot isn't even on the gas AND most importantly, I have charge available. Feels pointless for me to use my car for what I use it for 70% of the time, which is for quick errands around town at low speeds. Thought the prius was suppose to be a superstar for this kind of thing.
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I am suddenly getting 8 mpg decrease both long and short trips. Rotated tires, checked psi and did an alignment but couldn't find cause. I remember my old car had an engine thermostat and when that was stuck open or close the mpg decreased a lot too.
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The stock 265/75/16 tires need to be replaced and I was considering swapping 285's on the stock wheels. Will I notice an increase in fuel consumption? I realize that calculating mpg will need to be adjusted due to larger tires since the speedometer will be slightly off.
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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 was driving my 2010 Prius on the Highway (less than 2 miles) and the engine check light came on.... shortly after the ! (triangle with exclamation light came on and then started flashing). I exited the highway and was going back home. On the way home, I noticed a decrease in acceleration and then a message 'Hybrid...'
I was able to coast into an apartment complex and then got a ride home.
After about a couple of hours, I went back to the Apartment Complex. I reviewed the manual and one of the options was to check the gas cap. I filled the tank up last weekend and haven't driven it since today.
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2004 Prius and I have lots of static in the AM radio. Some days it is worse than others mostly I am unable to listen to it. If the car is in accessory, the static in the AM radio is not there. As I drive the car the static will increase or decrease based on the proximity to the overhead wires. There are days however where the static will be hardly noticeable. I've owned the car since 2006 and have always had this issue.
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I am a new Prius 2010 owner - One question - I read in the manual you should not carry your remote control near your cell phone since it could cause decrease battery life. Does it matter if cell phone is off? I always carried by Camry remote control in my purse with my off cell phone. Camry is 7 years old and battery still works.
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I noticed yesterday that sometimes when I'm driving down a street which is slightly downhill and the ICE is off and I'm coasting that the EV light is sometimes off even when my foot
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I have noticed something about my 2010 Prius. Lately when I am driving the car for about an hour, the engine slowly reduces RPMs (based on sound) when I take my foot off the gas. The MPG indicator slowly goes from near zero to 100. Like VERY slowly. And that is just street driving below 45 mph. The car has almost 60k miles. Tires are correct and in very good shape.
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I got a brand new 2014 prius c(one) about two weeks ago now and it feels like it "hard shifts" when coasting from 43mph-40mph. The dealership says its normal, they said that it is just the engine switching.
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My 2008 Prius had a front quarter panel replaced after my wife back in to a fire hydrant.The body work looks fine , no issue there, but now when the car is coasting with the gas engine off you can hear a humming sound that was not there before the repair.Also it does,nt seem to be recharging the hybrid battery at the same rate.My thought is maybe the body shop caused some damage to MG1 by spinning the front tires on a emision testing machine or rollers.Does special precautions would have to be used when testing wheel clearances after a quarter panel replacement on a hybrid? Would a body shop need to do this ?
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Yesterday when driving at high elevation and extremely cold temperature I heard and felt a pulsing from rear of my car when coasting or idling.
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I just had an oil change done on our 2010. Also of note, I've just switched the winter tires over to summer tires - done myself. So here's the issue. When coasting, particularly at low speeds, a rubbing noise can be heard issuing from the front right somewhere. The noise goes as the rpms go and seems to go away when either braking or accelerating. I'm not sure if it's present at high speeds due to road noise which would overwhelm it.
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Symptom: A vibration that feels somewhat like a bouncing tire
Cause: Coasting in Drive (Applying the gas at all stops the vibration, putting the car in Neutral also stops the vibration)
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Noticed the barely audible (with good ears) high-pitched sound that emanates from the car when you let off the throttle enough to prevent any charge or discharge bar from showing? It goes away if you completely release the throttle or if you press the throttle a tad bit more.
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So our car has performed flawlessly since 2005/135K miles. Still getting 55 mpg in the display in the summer, 45 mpg in the winter. Only issue is traction battery SOC quickly goes to full green when coasting downhill, and 1 or 2 purple bars when climbing. In Colorado, this happens a lot. Within a mile or so coasting downhill the SOC is full green. Question is: should I replace the traction battery? Is there any harm to continuing to experience this behavior? When full green, I realize I am using friction braking over regen braking, have actually felt the crossover from regen to the pads, as the SOC goes full green.
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I've been having some issues with my FM radio for a while, I had really bad static when using the rear defogger but they have since replaced my back window under warranty and that has fixed it. Though, I'm still getting static or fuzz when my foot is off the gas and I'm either coasting and/or braking. When the signal is weaker it's really bad.
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