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Bmw 520d beats Toyota Prius in fuel economy test

Posted on by 32

You may wonder if this is a joke...well it isn’t! It is true! The 2.0 liter diesel engine of the Bmw showed better fuel economy than the well-known eco-friendly Toyota Prius. Some of you may see this camparison between the two cars ridiculous but if we look at the CO2 emissions of the two vehicles we see that there are almost equal: the Bmw delivers 41.9 mpg while the Prius, with almost 250 kg lighter, delivers 40.1 mpg.

The test between the two cars was made on the London-to-Geneva route. The Bmw equipped with a series of energy-saving features like the battery recharge when braking, good aerodynamics, low rolling resistance in a word the so-called EfficientDynamics showed no problems on the road and by the end of it also remained with a third of its tank in reserve.

Toyota Prius

The Prius ran out of gas but this happened only due to smaller tank and because the car is made for urban live. The advantage if hybrids can’t be seen on highway where the car is pushing through the wind, this can easily be seen in urban driving where the stop-and-go recaptures the car’s energy.

Now if we make a conclusion we can say that Bmw showed every one that its 5-series can beat also the eco-friendly Prius but what if the test would have been made inside a town...Would the Bmw be the winner?




32 comments:

"Nope, wrong again. It was the newspaper that instigated the test. I think they were just trying to prove a point and

did a darned good job of it."

Oops sorry. No urban driving, no fair comparison. No mention of urban driving was written here on this link.

"hybrid drivetrain in the in-town setting in which it works best. (But even with this "advantage" the Prius still ran out of

gas."

Read this? "The Prius ran out of gas but this happened only due to smaller tank and because the car is made for urban live."

"50cal: "Now, now, AK. Don’t be waffling on me now. I thought you were for the green cars and not the guzzlers??"

Ah yes, it seems that most of my comments have been about saving the world, going green and gushing over hybrids and condemning those blasted SUVs and performance cars.

Bottomline is, a Prius with a gas engine gives around the same mileage as a higher density diesel engine and considering thats one of its biggest market is America, I don’t think diesels will jeopardise its sales. Besides, most places in America actually have higher prices on diesels so it comes back to the same thing, the better mileage you might get in a diesel is offset by the lower price of gas.

"your surprise and outcry would have been even larger."

Uh, Iam not the one writing 5000 word comments. Seems like you are the one surprised that someone wasn’t gushing over a BMW.

This could go on but I just read something about an electric R8. Iam gonna go check that one out, being a guy who loves hybrids and all that, ya know.

A quick trip to the BMW site shows they have 24 models that achieve 25 mpg or more. This doesn’t include any diesels. All this talk about gas-guzzling, I expected to find they were just getting 5 or 10 mpg. I see that the BMW 750i sedan sports a 4.4L V-8 that achieves more than 20 mpg. Not bad for a small V-8 four-door sedan.

You mentioned somewhere in so many words that BMW wasn’t Green enough.

See this topspeed article: Bmw 118d receives 2008 World Green Car Award

They don’t give out these awards Willy-Nilly. Whoever gets an award like this has to jump through some gigantic hoops. I know you will want to review this article, even though Prius wasn’t mentioned. Now don’t tell me BMW gave the award to themselves??

See also this topspeed article: Prius Overhyped? BMW 5 Series Diesel Gets Better Mileage, Posted on 03.17.2008 09:47 by

Ralph Kalal

"Here’s the test which The Times put the two through:

Both cars were driven from London to Geneva, “using motorways and town driving.” That’s a direct route of 460 miles, but the

newspaper added an additional 100 miles of urban driving, specifically to give the Prius an advantage through use of its

hybrid drivetrain in the in-town setting in which it works best. (But even with this "advantage" the Prius still ran out of

gas. Sorry, I couldn’t resist. 50cal)

Results?

50.3 mpg for the FULL-SIZE BMW equipped with a four cylinder diesel.

48.1 mpg for the (compact) Prius.

Bottom line: drive a Prius if you’re looking to make a politically correct statement, but don’t presume to believe that you’

ve found the only true way to save fuel or reduce emissions – or even the best way."

Now, AK47, I know you’ve seen this article about 16 months ago. I saw your post there, so I know you must realize that the

BMW/Prius economy test drive included over 17% driving in an urban environment to quiet the whining from those Prius weenies.

And you and I know who some of them are, don’t we? 8-)

Here is your post from that site on this article: "AK 47 (6755) - Posted on 03.17.2008
While diesel is more enviromentally friendly, it is not completely safe. I agree with Dan and Kingtiger- the price factor

also has to be taken into account. And BMW, stop trying to show people that you are concerned about about the enviroment,

because BMW cars have the highest fuel guzzling rates, what with their large engine capacity(in litres), but they still have

crappy performances. The only people who actually seem to have the enviroment in mind are(whether you like it or not) the

Japanese and Audi, who are also developing high performance diesel racing cars."

I don’t blame you for considering the price. I’d do the same but the fact remains that the snobbish BMW beat out the Prius. Did

you see the comparison between the Prius and the VW Jetta? Check it out on u-tube. Look for "Jetta Takes on Prius: Toyota

Prius vs. VW Jetta TDI Diesel"

AK47 (805), Posted on 07.30.2009

"There are a number of things I would like to point out but I am a little pressed for time."

50cal "I get that way too but this is important. Right?"

AK47: "One, trucks use diesel engines because diesels have massive amounts of low end torque that no gas engine will ever

have."

50cal: "Electric motors and steam engines also have massive amounts of torque at low speed. The real reason that large

trucks, ships, locomotives, etc. use diesel as a fuel is that it is more economical than gasoline. A Prius uses gasoline, a

diesel does not. I might add here that a locomotive is really a hybrid. It uses a large diesel engine to turn a generator or

alternator to charge batteries which power electric motors which make it go. Why not a Prius with a bit more quality, better

handling, less complication, and a diesel engine. Then I would be happy with it. OTW I would probably opt for a Jetta/Golf."

AK47: "Two, check out the price of a Prius versus a BMW. And check the reliability also."

50cal: "No doubt, Toyota has good quality control but BMW must be doing something right, unless all the buyers are simply

snobs. Besides if we go to the quality thing I suspect we can’t compare a $50,000 car with a $23,000 car and expect the same

quality."

AK47: "Three, (and you lost all credibility with this one) fair and square test? A test that didn’t include urban driving and

was in all probability carried out by BMW itself."

50cal: "Nope, wrong again. It was the newspaper that instigated the test. I think they were just trying to prove a point and

did a darned good job of it. A more fair test might have been a VW Jetta vs. the Prius on the same road trip since the two

cost about the same and have similar quality. In fact the Jetta is actually lower cost. See the u-tube video. Besides, now I

know you’re just trying to get my goat. You already knew about the urban segment as I’ve stated above."

AK47: "And no, I wouldn’t take a snobby BMW or a Prius on a long haul. I’d find the biggest gas guzzler I could find and

drive that."

50cal: "Now, now, AK. Don’t be waffling on me now. I thought you were for the green cars and not the guzzlers??"

There are a number of things I would like to point out but I am a little pressed for time.

One, trucks use diesel engines because diesels have massive amounts of low end torque that no gas engine will ever have.

Two, check out the price of a Prius versus a BMW. And check the reliability also.

Three, (and you lost all credibility with this one) fair and square test? A test that didn’t include urban driving and was in all probability carried out by BMW itself.

And no, I wouldn’t take a snobby BMW or a Prius on a long haul. I’d find the biggest gas guzzler I could find and drive that.

First of all, the World is in no danger of running out of fossil fuels in the near future. So rest easy. We may be nearing the end of the cheap fossil fuel era but, trust me, we have plenty more fossil fuel. When we finally use that last drop of petroleum, which won’t happen in our lifetimes, we will still have oil shale and coal, enough to last for many, many years. Oil shale and coal can yield fuel for our Toyotas and BMWs. Just because we have plenty of fossil fuel left doesn’t mean we should squander it like we’ve done for so many years, and that’s the reason many knowledgeable engineers are designing more efficient and cleaner burning diesel engines. Diesel engines offer the most efficient method of burning fossil fuels, as well as some renewable non-fossil fuels. As you know, most diesel fuel is just as much of a fossil fuel as gasoline is. I can’t find where I stated that diesel was not a fossil fuel as you suggested but, since you brought the subject up, there are some renewable, aka non-fossil fuels, that can be used by diesel engines. You may want to help save the Planet by driving a diesel powered automobile that can burn renewable, bio-diesel made from recycled fry oil, for instance, or algal derived bio-diesel, both non-fossil fuels, which cannot be used in gasoline engines but work quite nicely in properly designed diesel engines.

You said this, “Hybrids by the way are made so that companies are one step closer to making cars that run without fossil fuel.” One step closer?? Didn’t we have electric cars in the 1920’s? Why do you think we weren’t still driving them in the 1930’s? My point being that electric cars are not a new idea. Neither are diesel powered cars and trucks.

You also said this, “How much use do you think a diesel will be when you run out of fossil fuels?”

Well, if we were about to run out of fossil fuels, which we aren’t, I think I would burn some renewable bio-diesel fuel in my diesel engine. What would you burn in your gasoline engine? Perhaps ethanol? Not a very efficient fuel but it would get you around as long as the winos leave you alone. The diesel would still perform about the same, or better, in that distant future time as it does now.

And, you said this, “Hybrids by the way get better mileage in city driving so using your theory that the TDI getting lower mileage in city driving, how will it get better mileage than a car that recharges between stops and conserves energy when the diesel will just be burning gas even at idle?”

Any engine that is sitting still while running gets exactly zero mpg, even if it is only to recharge your batteries. The trick is to not sit still while the engine is running and vice-versa, don’t let the engine run while the car is standing still. We already have diesel powered cars that can exceed 100 mpg in normal driving. To increase their efficiency they automatically shut down when stopped in city traffic and restart automatically when you push down on the accelerator. These cars are not yet in wide production because there is no great demand for them and because the general public is not yet aware of how efficiently a car can be built if necessary. So, those, such as yourself, who see for the first time a car that is diesel powered beat out a Toyota Prius in an efficiency test are naturally surprised. I’m sure that if the BMW 520 had this simple modification it would have added several more mpg to its efficiency rating and your surprise and outcry would have been even larger.

Did you ever wonder why all long-haul trucks are powered by diesels? Why all trains are basically diesel powered? Why all large ships, excepting for the nuclear powered ones and “The African Queen”, burn diesel fuel? Its because diesel engines are much more efficient than gasoline engines. So, you shouldn’t be surprised and dismayed that a diesel powered BMW beat out a Hybrid Prius in a fair and square economy test.

The truth of the matter is that until we can power our cars with flux capacitors and di-lithium crystals we are going to have to make the wisest use of the fuels we have at our disposal. At this point it seems more wise to be driving a BMW 520d than a Prius. Please don’t tell me the answer lies in a Prius, when a slightly modified BMW can beat its mileage. Even if you could recharge your Prius at home you would, in most cases, still be using fossil fuels to produce the electricity just like you do when you are running the Prius with its gasoline engine.

In all seriousness, wouldn’t you really rather take a long trip from London to Geneva in a nice comfortable BMW than in a tinny, plasticized little rice burner that weighs 250kg less? I would, especially if the BMW actually gets better mileage than the highly touted Prius. Don’t believe me, however. Go check out the Prius for yourself and then compare its quality with that of the BMW. On the Prius be sure and check out the plastic seat rails, etc.

What are you talking about? Diesel is also fossil fuel. Recharge? Its a bloody hybrid, thats why you have the gasoline engine. When the battery runs out of power, the engine kicks in charging the battery at the same time. Hybrids by the way are made so that companies are one step closer to making cars that run without fossil fuel. How much use do you think a diesel will be when you run out of fossil fuels?

Hybrids by the way get better mileage in city driving so using your theory that the TDI getting lower mileage in city driving, how will it get better mileage than a car that recharges between stops and conserves energy when the diesel will just be burning gas even at idle?

And sorry but Toyotas have higher quality and reliability than BMWs.

Yeah, I used to think the Prius was the answer too, until I found out it still uses a fossil fuel engine and can go just a short distance before a recharge. It makes more sense to use a more efficient diesel engine than the gasoline one furnished with the Prius which only gets around 38 mpg on the highway. The VW Beetle diesel TDI has been getting 43-56 mpg on the highway for years and not much less than that in city driving. Tell me what a ’fair competition’ would be between the Prius and the BMW 520D or between the Prius and the VW TDI? I suspect the 520D would also do well in city driving (like the VW TDI does) since a diesel engine naturally runs leaner at low rpm. The 520D isn’t your grandfather’s diesel. Diesels are much cleaner than they used to be, squeeze more energy from each gallon of fuel, and use less energy to refine their fuels, as compared to gasoline. In a plug-in hybrid, which is all the rage these days in hybrid circles, a fair comparison must also take into account the fuel (coal, nuclear, heavy oil) used to produce electricity to charge hybrid batteries. After about 5 years you can throw your hybrid batteries into the recycle heap, if they haven’t blown up first. Oh, haven’t you heard about those? This is equivalent in cost to changing the engine in your car about every 5 years. These last few things seem to be forgotten in any comparison between hybrids and other vehicles. BTW, the BMWs really are much higher quality than the Prius.

Who the f*ck gave anyone the idea that the 5 series will give a better gas mileage than the Prius?
First this isn’t even a fair competition. Why?- because in order to get the full capabilties of the Prius, it would have to be driven around in urban areas to get its full potential in order for the batteries to recharge. Since the BMW runs directly on diesel, the people who testing the cars would not have been afraid to test it against the Prius in real driving situations.

Second, BMWs are known for their gas guzzling qualities and to think that the 5 series with their 5L engines will beat the Prius in gas economy is about as ridiculous as it gets. This BMW has a 2L diesel engine, to say that the 5 series with their gasoline engines can achieve the mileage of the Prius is absurd to the point of lunacy.

BMW is 10000 times better looking, faster, nicer to drive, and as it got proven, more eco-friendly either!!!

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