Toyota Prius MPG: Fuel Efficient or Not?

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Toyota Prius 2009When it comes to hybrid cars, one of the most important, if not the most important metric, are the mpg’s (miles per gallon). So how many miles per gallon does your Prius hybrid get? When I accompanied my fiance to buy one last year, we were greeted with an EPA mpg on the sticker touting a city mpg of 60, and a highway mpg of 50.

60mpg city? Really?

Having owned the car for nearly a year now, with about 5,000 miles on it, and having driven various routes including two different work routes on a regular basis, we can say that we have never gotten close to achieving the 60 mpg advertised on the sticker.

Higher mpg in the city than on the highway?

What’s really confusing is the fact that the mpg epa advertised on the car suggested that we would get more miles per gallon in the city than on the highway. We thought, okay, that’s the opposite of what we’re used to (since the starting and stopping of gasoline-based engines in the city is more taxing on fuel economy than is cruising at a constant speed on the highway). But we considered the fact that this is a hybrid car that also runs off its electrical battery, so we thought maybe the car runs more off the battery at slower speeds and therefore achieves a higher fuel economy. In our experience, and everyone else we’ve talked to – not so!

High 30’s in the city, mid to high 40’s on the highway

We get in the high 30’s on average in the city and in the mid to high 40’s on average on the highway. Our Toyota Prius model is from 2008. While these aren’t bad numbers, and are definitely 15 mpg’s or so higher than what we got in our Honda Civic (non-hybrid), they are not even close to the mpg epa that was advertised at the dealer.

How many mpg’s does your Prius get?

Are you a Prius owner? Chime in below and let us know know how many mpg’s you’re getting. Even if you’re not a Prius owner, but own a hybrid or another vehicle that gets high mpg’s, feel free to share your story.

Priuses Galore

On a recent visit to San Francisco I was amazed at the number of Toyota Priuses on the road.  I don’t think at any one time I could look in any direction on the highway or on city streets and not see one.  It’s no wonder that the American auto market has been eclipsed by foreign auto makers, not the least of which is Toyota, riding the success wave of their gas-electric hybrid, the Prius.

What differentiates the Prius?

The Toyota Prius, unlike other hybrid cars, is only available in a hybrid version.  So when you spot a Prius on the road, you automatically think hybrid and “that person cares about the environment.”  This is in contrast to other, traditionally gas-powered cars that also offer hybrid versions.  An example would be the Honda Civic.  A great hyrbid car, but the only thing giving away the fact that it’s a hybrid is a little icon on the back.

California gives credit to Hybrid owners

Always the clean-air and environmental pioneer, at least amongst U.S. states, California paves the way again by giving people additional incentives beyond those offered by the federal government (tax rebates).  In particular, hybrid cars are allowed to use the carpool lane.  All hybrid cars?  Nope, only those that actually live up to their billing.

Hybrids allowed in carpool lane in California?

Yes, but only those that achieve 45mpg or higher.  That would include the Toyota Prius, Honda Civic Hybrid, and Honda Insight, according to epa mpg estimates. It’s a good thing the carpool figures are based on the epa figures, otherwise we wouldn’t be getting to ride in the carpool lane during traffic!  Interestingly enough, American manufactured hybrids achieve a mere fraction of the fuel economy gain that their Asian counterparts do, which is the reason this legislation was put in place. Nice.

Michelle is passionate about living a healthy life. She shops farmers markets, cooks organic, and eats vegetarian. Juicing and smoothies are a part of everyday life in her home. So are recycling, composting, and gardening. I guess you could say Michelle has a green thumb. Even when a plant doesn't make it under her care, she is still dedicated to making the earth a greener place for future generations.

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62 Comments on "Toyota Prius MPG: Fuel Efficient or Not?"

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Anony Auris Hybrid
i have recently purchased a Toyota Auris / Corolla Hybrid 2015/16 facelift model.
Not sure whether this is lighter than the Prius but by easing off the gas and using a lighter foot i have been able to average between late 60s to 80 mpg on average.
I wore my heavier shoes one day and found i was averaging more towards 50 mpg.
I wanted to get an idea of how accurate or how much can you right of the MPG calculator.

Unfortunately i can’t work out exactly how much the MPG the car does as i share it with my wife and she has a much heavier foot than me – costing me fuel 🙁

Joe Hatch
I bought my first Prius, a 2008 used car, about two months ago (May 4, 2017). It had 156,000 miles on it, yet it runs great, and the cumulative average fuel economy, as calculated by the car’s computer, is 53.3 MPG. I’ve logged about 3,000 miles in the nearly two months that I’ve had the Prius, and I can say with confidence that the computer is very accurate. I proved that by doing the actual calculation when purchasing gas at refueling stops. I can very easily go 533 miles on ten gallons of gas. I am a fairly conservative driver, and employ a good deal of anticipation concerning stop signs and red lights, but I don’t baby the accelerator pedal too much because that keeps the instantaneous gas mileage so low for too long. It’s better to just speed up and get it over with, and then keep the momentum steady. I do plenty of city driving but it’s balanced by a fairly equal amount of driving on country roads, at speeds from 40 to 55 mph, but I do very little expressway driving over 55 mph. Speeds over 55 mph seem to diminish overall gas mileage in my Prius. The car’s engine oil was apparently newly changed before I bought it, but when I do change the oil, I’m going to use Mobil One synthetic oil, and that may even boost the gas mileage a tad. I don’t know why some other Prius drivers get such lower gas mileage.

I’m finally getting really comfortable with owning a Prius, and I wish I had bought one earlier! The only problem I’ve had is with the 12 volt battery in the back of the car. The car would fail to start up and say “Ready,” and I would get the “Red Triangle of Death.” So I bought a “Yellow Top” Optima battery and that ended the trouble. I was surprised by the price of the 12 volt battery, and I found that it’s a special battery, so Prius owners are stuck paying a premium for one. But then I learned that the Advance Auto website offers, from time to time, online discount coupons, that will save up to $50.00 on purchases over $100. I ended up paying $142.00 plus tax for the battery, after returning the old one (core). The “Check Engine” light came on a few weeks ago, so I had the code checked and it indicated a bad catalytic converter, but then the light went out again. The quotes I got for replacement of the catalytic converter were all around $2,000.00 so I hope the light stays off. Overall, I’m very happy with my new (used) Prius!

Robin
I have a 2012 Prius (with 15″ eco savings tires), and I usually get 60mpg (no or light A/C, 20°c/25°c outside), to 44mpg (A/C on full power, 33°c outside), all around town, no highway.

I optimized few things :
– Michelin Eco tires, the best for fuel economy,
– tire pressure 40 front, 39 rear
– 0w16 oil, the thinnest available.
– always ECO mode to manage very precisely the engine behavior.
– the most important : A LOT of anticipation.

engine has 30k miles.

I just started a new refuel right now, and I’m at 80 mpg on 40 miles, doing all techniques to save fuel, without being a snail for other drivers too. But it requires a bit of training, I admit that it took 1 year to fully manage the hybrid system to get the lowest fuel usage.

Sandy
I just upgraded from a 2006 to a 2014 and have been disappointed that the mpg is still right around 40. Highway and city. Doesn’t make sense as I drive the same way I did with the 2006. Feeling like I made a big mistake to “upgrade!” Advice?
Mario Gonzales
Hello Fellow Prius Peeps… My wife and I bought the “redesigned” 2016 Prius in Feb 2016, and have put on over 27k mi. Now… I have NOT double checked the ACTUAL MPG against the car computer (But I will now), but for now here at my stats… Average mpg for 27k is 44.7mpg. I will also add that I have a heavy foot (by nature) and YES we did maintain an ave. of 52-50mpgs but that was because I was “actively trying” to ease up on my heavy foot, but after driving it for over a year and putting on 27k + mi/yr (which is actual real life scenario), who drives an ave. of 15K mi/yr?!?!? We love to travel and did commute approx 80mi/day for a few months for work. Anyway, back to stats… I noticed that mpgs dramatically dwindled with HWY travel and that is why we are at 44.7 ave now. I am lucky if I can maintain an ave. of 46+mpgs on HWY. However, I did say I have a heavy foot… I normally drive ave. 75-80mph on hwy. I thought my ‘REAL” world experience could help someone when making a decision to buy a prius. Now, for my opinion… Buying the Prius is probably one of the best decisions we could have made, wish we would have bought it sooner. We had a Yaris and averaged 34mpgs which was not bad, but it was a basic Yaris, with manual crank windows (BASIC)! We decided on the Prius Three Touring, LOVE IT!!! The drive is Lexus-Like, seriously, Ive driven many Lexii and I know it’s not a Lexus, I said Lexus-Like! The interior has a Luxury feel and look, very spacious and the easy drop down back seats give you tons of cargo room. The drive is fun, the motor(s) (gas & electric) make it pretty peppy, the redesigned rear suspension and added Touring suspension give it a Lexus-Like drive. The electric mode makes us feel environmentally friendly when cruising through a National Park. I’ve always liked the redesigned body and tail lights, trust me, it turns heads and I cant forget about the headlights (AMAZING) The Bi-LED Headlights are BRIGHT, people often flash their highs on me bc obviously they think my highs are on, who cares, the point is that the road is well lit when my wife and I drive at night and with the highs… OMG!!!
I didn’t think I would write this much, I don’t know if there is a word limit I apologize if this is “wordy.” I just wanted to give readers a perspective from someone who loves to drive fast and also owns a lifted Tundra (Yes we are Toyota Loyal), by no means am I paid to write this… I am a regular Joe Shmoe… just giving back, because I’ve read many posts from Prius owners and told myself I would write a review someday after a year of ownership! Now… I wish we would have waited for the Prius Prime… but… We are instead looking at buying the 2017/18 Hybrid RAV4, because it comes standard with AWD and well… IT’S A HYBRID!!! So if anyone was experiences they’d like to share about the New Hybrid RAV4… all are welcome! PS… I think the Toyota Safety Sense package is Awesome… Adaptive cruise control… where have you been all my life!!!
Daniel
I get 50 mpg in my 2004 Prius on long highway trips. Less in the city, though I have not measured recently enough to remember the exact number. I suspect that 60 mpg city in my Prius would require ideal driving conditions. Cold weather kills the mileage, as do shorter trips as the car burns more gas for the first 5 miles to warm up to achieve its SULEV rating.
Jack Zeiger
We own two “Prii” – a 2011 and a 2013 (both red). We get close to 50 mpg with the 2011, and a little over 50 (about 52) with the 2013. We have also found that we do get better mileage around town. You must be driving these pretty hard to get down in the 30s. If you brake gently, you get maximum benefit from the regenerative braking. Hard braking uses regular brakes and just wastes the energy.
Rick James
In my 2012 prius that I recently purchased, I average around 57-60 MPG for my trips according to the computer. It is possible that the computer is in error, so I will be checking with my own calculations on the next fill up. I use the eco mode mainly and on some of my routes I’m able to drive solely on electricity for up to 1.5 miles or so before battery depletes. I try to accelerate efficiently from a red light to reach the speed limit and then either go into EV mode to maintain speed or if there isn’t enough battery, I keep the car running at the most fuel efficient RPM. I don’t accelerate like a snail if there is traffic around me, that is honestly what gives Prius drivers a bad reputation. Speed up a bit right before a hill and let the cars momentum assist you in reaching the top. Learning to brake is also very important with the Prius, start braking from as far from a red light as you can to recharge the battery as much as possible. It’s possible to get great fuel economy and keep up with traffic if you follow some common sense and good driving habits.
Neal G. Alldritt
I have a running average of 46.7 m.p.g. since I got the 2014 Prius new. I don’t go by the electronic m.p.g., I go by actual miles divided by gallons on a fill up to fill up: total miles, 15934 divided by gals.,341.249 or 46.7 m.p.g. average. I check my tires often and put 2 pounds over the recommended. I live in Sarasota, FL which is flat, no hills. I coast asmuch as I can to a stop. I don’t accelerate fast. I talked to a Toyota Service Manager and
he claims nothing can be done. I said can’t you tweak the computer or something and he says they can’t do a thing. I told him a couple of car manufacturers have gotten into trouble overstating the E.P.A. miles per gallon. So caviat emptor, let the buyer beware! Neal Alldritt
Ray M.
My 2015 Prius has an 11.9 gallon tank. I’ve gone 440 miles on this tank with 30 miles to go until empty. 470 miles on a tank of combination city/highway driving at 39.5 mpg is very disappointing. My trip meter indicates over 52 mpg on this tank (NOT).

The trip meter is consistently off by 10% (better) when checked against actual gas used. Plus the odometer reads 1 to 1.5 mph higher when checked using GPS and road sign checks. Very disappointed!

An Owner of 2013 from new
Ray M.

Prius run the empty gas light flash with about 25 mile to go but it still can go 50 mile when car said you can go

Bethann
2013 Prius…43 MPG mostly highway miles. When on a long highway trip can go up to 46. Frankly not impressed.
I have a 2013 Prius III. Had it for 18 months and just over 10K miles. I have averaged 43 MPG with mostly city driving in the PNW. Best single mileage was 48 MPG on a trip that was about 90% HWY. Have “re-learned” how to drive a hybrid (coasting, pulsing, etc) based on all the blogs. Happy that the mileage beats most other cars; pretty sad that it is a lot lower than EPA results.
Bethann
Agree 100%!
Getting around 30-31 MPG from Prius (in temperatures of 10-11 degrees Celsius). Very disappointed with Prius. Do use EV mode a lot for a smooth drive. Only satisfaction is low tax.
Sadie Cornelius
DK, sorry to hear you have been disappointed in the Prius but at least you are getting the tax benefit and hopefully helping the earth a little with a higher MPG than other cars. Thanks for sharing and reading!
Copper Head
I own a late 2013 Prius. For 7,596 miles it has averaged 42.41 MPG, a long way from the advertised (EPA Estimated) MPG. I am an automotive engineering professional and I drive for economy. The Environmental Protection Agency (EPA) specifies, monitors, and certifies, with the force of law, a rigidly controlled test regimen by which the window placed mileage
numbers for each class of vehicle are determined. They determine the driving schedule, ambient temperatures, loads, and everything else they can think of. With this process they can make the numbers pretty much what they want them to be. It appears they want us to buy hybrids so they invent test parameters to make hybrids look good. The car companies are required, by law, to post those EPA generated numbers on the window of new cars. Of course they, the companies, are not disappointed if the numbers are favorable. The EPA can also make the numbers look bad for vehicles they want to discourage.
Hugo Rodrigues
My wife and I just purchased a brand new 2015 Prius (IV) and have driven about 800 miles so far. We have yet to break a 44MPG. I am a very smooth and careful driver. We don’t cary a lot of passengers or cargo, and we make judicial usage of the climate controls inside the vehicle. So, I can’t figure out why we are not getting 50MPG as advertised on the sticker?? I will be contacting our Toyota dealership to see if they can shed some light on this. After all, people generally purchase Prius’ for the gas savings. At 44MPG, I could have purchased an all-gas vehicle for half the amount we purchased for the 2015 Prius (IV).
Getta Wright
I am glad for your review. I purchased mine (2015) on mother’s day and had to fill up the take already at 345 miles. This isn’t making sense to me especially when the selling point was how you would go close to 600 miles before filling up. I thought once a month, hey why not? I will be calling Toyota tomorrow as well.
John
I heard the new Prius 4 which need least 8,000 miles before it gets over 52 mpg. I think the new engine needs get broken in first!
Kathy Faust
I, too, would have been skeptical of a car that claimed it got better gas mileage in the city than on the highway. However, I would have been extremely irritated to find out that my car was getting much, much less MPG than stated. A lot of people currently make vehicle choices based on MPG and with good reason. With gas prices double, sometimes triple, what they were a decade ago, it pays to find a car that has great gas mileage. To find out that a car you’ve bought gets over 20 miles less per gallon than stated is unacceptable.

I can’t say that I would ever buy a Toyota in the first place. After the incident a few years back with the sticking gas peddle, I would never buy a Toyota. The company cared more about saving themselves than saving lives and that’s just sick. To find out that they’re also lying about the performance of their vehicles just throws gasoline on the flames – pun intended.

I would be interested to learn if more hybrids are closer in the numbers than the Toyota Prius claims to be or if they’re all overstating the performance. For now, I’ll stay away from hybrids until all the kinks are worked out.

Adam Bynum
I bought a 2015 Prius 3 and it has just over 6000 miles. The computer says I average 47 mpg but I reset the trip odometer at each fill up and I barely get 350 miles from a full tank. The computer says I get 47 but I really get 35 mpg or less. Something tells me that those of you claiming 50+ mpg are reading what the computer displays and not actually calculating it for yourselves.
Kathy Faust
I have to say that I would be less than happy to find out that the Prius I purchased had poorer gas mileage than stated. I know that these numbers are usually beefed up a bit, but that is ridiculous. After all, it’s not like people are buying the Prius for looks. The main selling feature is the supposed better gas mileage. I really hope the government steps in and requires that these numbers be changed to correctly state the mileage. I actually wonder how many other people have noticed that the numbers aren’t as good as stated.

Personally, I want a hybrid that is American made. The only exception would be a Honda. Honda made many green strides long before any other company even considered it. However, I prefer American made, especially when it comes to a large purchase. Not only do I care about craftsmanship, but I also care about supporting our country. I’m happy to be a Ford owner because they are also one of the few companies who turned down government assistance. That’s saying a lot.

I currently own a 2010 Ford Focus and while the mileage isn’t perfect, it still gets around 35 MPG on the highway. The numbers may actually be bit a bit better since I installed a K&N air filter.

Anonymous
My friend bought a hybrid Toyota Prius around the same time I bought my highly-efficient but still traditionally powered Hyundai Elantra. The cars are both 2009 models and on both or our parts we are generally very satisfied with the way each of these vehicles have worked for us over the past few years.

However, I would be lying to you if I did not say that I am envious of the fuel economy that my friend achieves with her Prius. I get somewhere around thirty miles to the gallon in my Hyundai and that is certainly not a gas guzzling number to achieve. With my usage, that generally means I have to fill my tank about every other week. My friend gets nearly twice that though and her visits to the pump are somewhere around every month and a half!

Granted, her car was quite a bit more expensive than mine and certainly was in higher demand, but I think over the years, it is making up for the extra cost by saving her so many dollars in fuel.

Jonathan baker
I own a 03 Prius and first and foremost you have to know how to drive a hybrid – there’s is a huge difference. It has to do with learning how to control the engines, gas and electric. Once you get the hang of that, you’re set!! I get 55 mpg highway and 75 to a 100 mpg in the city. The sweet spot is from 25 to 40 mph. I will never ever own a regular or non-hybrid vehicle again. I love buying gas only twice a month, sweet!!!!!

John
I used to owned 2008 Prius which got 55 mph but my new 2015 Prius 4 only gets 45 mpg.
Kathy Faust
Why are companies allowed to blatantly lie about the MPG of their vehicles? It really doesn’t surprise me that Toyota would do this. If they’re willing to lie about cars leading to several deaths, why not lie about mileage. It’s just another reason I choose to buy American-made cars.

Throw in the fact that the government is more than happy to throw out tax credits to hybrid owners and it’s just another reason to be upset about the lies. People were able to purchase Prius vehicles and get the tax credit, even though the numbers were not as good as stated. Where’s my tax credit for my Ford Focus that gets 35 MPG? If the Toyota Prius owners got the credit, I want one, too.

I can’t imagine buying a Prius and finding out that the numbers weren’t that good. Not only do you end up stuck with an ugly, low-powered car, but you’ve still got crappy gas mileage. Who wants that? The one thing Prius had going for it was the mileage. Of course, I actually wonder how many Prius owners realize that their mileage is so bad. Most people just accept the numbers as fact and never question why they’re still going to the gas station as often as before.

Toby
American car companies don’t lie? What about Firestone and Ford with all the deaths of the Explorers with faulty tires they continued to sell? And while Toyotas and Hondas got such great mileage for so many years, the American car companies continued to make their gas guzzlers and overweight crap until they absolutely had to get better mpg to survive. Did they survive? Aren’t most American cars made in Mexico anyway; home of the president’s biggest enemies? Something tells me you also think the president doesn’t lie either.
I’m looking into getting a Prius, and am sad that Toyota, a company I thought I could love and trust, would not live up to the mileage on the sticker. But I may just get one anyway. My Scion xB gets pretty good mileage for a car that can hold five people so comfortably (about 27 mpg), but I am looking to save more with a Prius when I get more cash.
Another sad fact is that my local Toyota dealer (St. Louis city) was charging too much in extra processing fees. After they lost the case and I feel got off too easy in fines, I got a $50 service certificate (only from this same shady dealer) or a $100 off a new purchase certificate. So I now had to try to trust the same dealer to do more work when they ripped me off in the past. Do I blame Toyota or the shady dealer? I will not buy from them again or give them more money for any service. I try to think Toyota is not so bad, and that this is the shady American auto dealer at work who has been swindling many for so long.
I try not to talk it up too much, because they are far too busy due to being so good and trustworthy; the place to go in St. Louis in the city for Toyota repairs is Jamco.
Eye on the consumption
Not sure if it’s living in a colder location, but my Prius doesn’t average the mileage it used to get. I was able to average about 47 mpg, and I’m now getting an average of 43. I noticed I got closer to 50 mpg in the summer. Also, since I retired, I do more stop and go travel and less highway travel. This makes a considerable difference in the mpg. Too bad that many drivers are fixated on high speed, just to get to a location 10 minutes earlier. Keeping the speed as consistent as possible, gliding in to stop, and gradual acceleration all contribute to optimizing mileage. Wish I could afford a newer model, but don’t have the “extra” $10,000 to get a more efficient model.

Stephen Beckett
We’re getting 39.2 mpg calculated from Gas Stubs, after driving 11,000 miles. Mileage in town is worse (38 mpg) than on trips (45 mpg). In town we pretty much only have short trips of 5 to 10 min – so all the CC warm up is wasted. We don’t baby the car and or all obsessed about mileage. We drive it like any other car. Run the heat and AC as needed. These efficiencies are better that the average car and no where near what is advertised.

Remi Parent
I just test drove a 2006 Prius 2 weeks ago that only had 53,000 km on it. I did mostly highway (about 85%) and some city driving (total trip was 188 KM). Set to cruise control at 100 km/h (62 MPG) to go there and 105 KM/H (65 MPH) to come back. I averaged 48 MPG for the total trip. The outside temp was between 1 and 4 degrees Celsius and I was alone in the car (I’m a small guy). Although that is very good, I would have really liked to go 50+ MPG due to my very conservative driving. I get 36 MPG with my Pontiac Vibe driving the same way. Going up hills was no problems at all (some seem to think that the under powered car will have a hard time going up hills).

Overall I liked the car, I didn’t notice the handling issue too much like some talk about, but I didn’t “race” the car either nor do I do it with my vibe. I have to agree to a certain point though that if you would need to make a quick turn to avoid an object it doesn’t seem as responsive and quick to act. Only once I can remember in the last 10 years of driving where I really needed to apply very quick maneuver to avoid a bad driver. It was an extremely close call and I will admit that if I would have had the Prius I’m not so sure I would have missed the other car (I may have briefly touched it that’s all, compared to my vibe). Mind you the vibe is not exactly a sports car either so who knows, maybe the Prius would have handled the same way too.

As far as cargo room goes there is nothing to complain about here. With my Pontiac Vibe I find I have lots of cargo room and its one of the reason why I bought it (MPG and cargo room combined with excellent reliability). And the Prius interest me for all the same reasons (cargo room, MPG and excellent reliability).

I find I have just a little more cargo room with the vibe, the trunk is about the same size but deeper. The Prius has the battery underneath hence the not so deep trunk. Overall I really liked the Prius and the big seller of course would have to be with the MPG, most of my driving is highway and I was hesitant because I kept hearing how the hybrid was doing better in city driving but according to most reviews it does better on highway. I’m happy that I have been able to test drive one and although I very much like my Pontiac Vibe but I am looking at a used Prius for the better MPG.

Roland
I own both a Pruis and Altima Hybrid. The Pruis has less that 5k miles and is currently getting 39.5 MPG (very disappointing). But I do live in a cold climate and purchase gasoline with ethanol. So I expected to get less that the 51 MPG advertised but not 20% less. My cars are garaged so, I do not fell a need to start the car and warm it up before driving. Within 2 miles of driving the cars are warmed up. The Altima driving the same roads gets 35.9 mpg. The Altima is advertised to get 35 mpg city. So, bottom line both cars get the same fuel and drive the same roads. The Pruis does not get the advertised mpg but, the Altima exceeds the mpg. So, Toyota what is wrong with your advertised MPG! I would rather know that your vehicle gets 40 MPG up front than be lied too!!

Anonymous
It always amazes me a little bit when large quantities of automobiles or any other vehicle for that matter, get recalled due to some design defect or problem that was missed in the testing phases. It would seem that the technology has gotten so great and is so advanced that there is literally no scenario that could not be predicted under real-world conditions.

However, nearly every year that is proven to not be the case as we deal with all kinds of issues that the real world throws at these cars and they subsequently cannot handle. For that reason, it does not surprise me that the early numbers released regarding the economics of a hybrid car, namely the Prius, were not reflective of the real world results.

There are a lot of environmental things that can affect the efficiency of the car. One thing is the drivers themselves. The way a car is driven will vastly impact the end result of fuel efficiency. Another is the temperature of the air and the quality of the fuel. There are many others, and it all adds up to a wide range of results.

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