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World's Cleanest Cars

electrictroyelectrictroy Posts: 564
edited March 2014 in Honda
Subject: 2005 - North America's Cleanest




CHANGES: The Insight used to be #1, but Honda upgraded their GX in 2004, so the GX now fills the top spot. Also new to the list is the Escape Hybrid & several Partial-Zero Emission Vehicles (PZEV).


GREEN SCORE = scale from 0 to 100, where 100 = no pollution




Alternate Fuels/Hybrids


57 Civic Natural-Gas GX cvt (SULEV-2/PZEV)

56 Insight cvt (SULEV-2)

53 Prius cvt (SULEV-2/PZEV)

51 Civic cvt (SULEV-2/PZEV)

40 Escape cvt (SULEV-2/PZEV)


Standard Cars


44 Corolla manual (ULEV-2)

43 Echo manual (LEV-2)

42 Sentra manual (SULEV-2/PZEV)

42 Civic Lean-Burn HX manual (ULEV-1)







51 2-seat EV1 (discontinued)

51 Rav4 (discontinued)

27 = average car







  • larsblarsb Posts: 8,204
    This falls into the "Amazing But True" bin.


    "If driven from California to Washington, DC, the Honda Civic GX natural-gas vehicle would emit fewer reactive hydrocarbons than that released by spilling a single teaspoon of gasoline."

  • azhahazhah Posts: 82
    Also on same site..


    Midsize Cars:


    Toyota Prius 53 PZEV

    Accord Hybrid 40 ULEV 2

    Kia Spectra 39 PZEV

    Toyota Camry 38 PZEV

    Accord I4 38 PZEV

    Hyundai Elantra 38 PZEV
  • mirthmirth Posts: 1,212 the Ford Focus PZEV?
  • larsblarsb Posts: 8,204
    Yes, it can be had in a PZEV model:
  • explorerx4explorerx4 Central CTPosts: 13,744
    regarding a pzev focus, as of 2004 there was one.
    for 2005, i don't think there is one available.
    ford went with a smaller engine which get's a bit better mileage.
    2017 Ford Fusion SE 2017 Ford F-150 Limited
  • xcelxcel Posts: 1,025
    Hi Explorerx4:

    The Focus 2.0 purchased in the clean states and running on their LS gasoline is a PZEV. The same HW based car is a Tier II-Bin3 throughout the rest of the country on HS garbage. Very clean and a PZEV none-the-less. This is if you purchase the right one. There are also 2 others. A Tier II-Bin5/LEV-II for the entire country and a stinking LEV available here in Chicago and a few other large cities. This includes Milwaukee and Racine, WI., Lake County IL., Chicago, IL. Gary, IN. Atlanta, GA., and Denver, CO. The EPA lists these areas as Clean Fuel Fleet areas yet Ford (they are not the only guilty manufacturer) and others use it to dump their worst emitters :-( I really wish Ford would get rid of these LEV’s as it stinks to live in some of the larger cities in the Midwest and south and have to purchase a LEV if you decide on a Focus or whatever. It was not that long ago that the Focus 2.3 (late 03/early 04) were all PZEV’s no matter where they were purchased. They did not give the non-clean fuel states the PZEV warranty of course but they were very clean none-the-less. If only they would have advertised the fact! The same problem arises with the 2.3 L Ford Escape HEV as well. A PZEV in the clean states but only a LEV in a few large cities in the Midwest and South :-( Why, I have no idea?

    Good Luck

    Wayne R. Gerdes
  • larsblarsb Posts: 8,204
    I guess a car running on compressed air would be the cleanest car in history?,1,2-276729- - .story?coll=la-news-state&ctrack=2&cset=true

    To get that url to work, take out the space after 276279- there is no space there, it should read 2-276729-.story

    Hosts, why have long urls stopped working? When I create a new message and post a long url, the url is wrong. This only started happening a couple of days ago.
  • SylviaSylvia Posts: 1,636
    Yes - we know. Fix will be in on 3/2.
  • explorerx4explorerx4 Central CTPosts: 13,744
    i feel fortunate to have gotten a 2.3 pzev focus.
    of course, i still lose the sibling rivalry to my sister who has a gen 2 prius. :)
    2017 Ford Fusion SE 2017 Ford F-150 Limited
  • xcelxcel Posts: 1,025
    Hi Explorerx4:

    The PZEV Ford Focus 2.3 is one of my favorites!

    Since you own the Focus and have hopefully spent some time in your sisters Prius II, what do you like and dislike between the two? Which trim of the Focus do you own? I was partial to the ZX5 Premium w/ leather and a stick :-D

    Both are actually as clean as one another (Tier II-Bin3) sans CO2 output with the Prius II’s FE taking it out front but not in the short term given the production emissions discussed in detail over 6 months ago. I have to assume you love the performance, handling, price, and larger overall interior room of the Ford vs. the FE, rear seat room, and luxurious amenities of the Toyota minus the Sunroof. Are there any other small details between the two you might be able to share?

    If I could find a used 05 2.0 L PZEV loaded to the nines with leather, side impacts, TC, ABS, and a sunroof but with a stick and for $5K less then new invoice … Well you know, we can always wish ;)

    In direct regards to this forums topic, besides the 2 - 05 DCC’s receiving 9.5’s on the EPA’s new scoring sheet, the 05 PZEV based HCH and Accord are two top picks with SULEV-II/Tier II-Bin2 CARB and FED ratings respectively while also receiving very high FE for their respective classes in the real world.

    Good Luck

    Wayne R. Gerdes
  • In 2006, Ford will introduce a new Focus that operates on diesel and gets >40 mpg! It will be ULEV-2 qualified.


    Why does Ford have three emissions zones?
    - California-compliant states
    - non-california 45-State version
    - Chicago & other midwest cities

    What's the deal with that?
  • xcelxcel Posts: 1,025
    Hi ElectricTroy:

    The advanced Focus diesel is just a test bed and it will not be ready for 06 sale. It just went on the dyno 3 weeks ago for the SCR and DPF fitments and testing. The Tech lead is shooting for far beyond ULEV as his design is shooting at the PZEV spec w/ the hybrid drivetrain on the Meta-One but ULEV seems plausible without given what he has planned. The problem with the SCR CAT is it uses a Bi-Fuel fill nozzle (Urea and Diesel from the same nozzle but 2 different ports) and the Oil companies have not decided it is in their best interest to bi-fuel as every station would need an upgrade.

    It is the Focus Diesel that was shown around the US to the car mags if that was what you had read but that diesel was nowhere near ULEV qual’ed. This is what Mr. Zafer Shaikh is working to overcome.

    Second question: $’s.

    Good Luck

    Wayne R. Gerdes
  • SCR?

    Last I heard, the urea canister was supposed to be refilled every ~50,000 miles at the dealer. No need to modify fuel stations.

  • xcelxcel Posts: 1,025
    Hi Electrictroy:

    Your source is incorrect. Ford is looking at alternatives but they have already designed the co-fuel system for use with the Meta-One. I do not think it is a practical solution given the oil companies involvement but it is one that works.

    Good Luck

    Wayne R. Gerdes
  • Perhaps.

    No one's mentioned the VW Lupo 3L. It uses a tiny 3-cylinder engine to achieve 70mpg city/88mpg highway!

    Also, it has the ability to turn-off the engine when stopped, like a hybrid.

  • yerth10yerth10 Posts: 431
    Are you sure it turns off the engine. Then it must be using a small motor for this purpose and hence its a MILD HYBRID.

    Is it a Diesel Vehicle. Hope this vehicle comes to USA.
  • Well, if you want to be technical, ALL cars use an electric motor (aka the starter). Does that make them hybrids?


  • joebeattjoebeatt Posts: 50
    I'm from Europe and I'm amazed to see the enthusiasm that seems to be building up for diesels in the USA. The VW Lupo TDI in a discussion on cleanest cars!!! Please don't follow the European example. Diesel is so amazingly dirty, it kills millions of people around the world every year. Read about it on and especially the latest part of the article:

    The small particles which come from diesel exhaust are particularly dangerous because they are coated with a mixture of chemicals such as polycyclic aromatic hydrocarbons, nitroaromatics, benzene, dioxins, and other toxicants. The particles act like a special delivery system which places these toxic chemicals deep within our bodies. Some asthma medications use the principle of delivering a beneficial drug in a fine inhaled aerosol. Diesel exhaust is like a perversion of a drug delivery system which delivers hazardous toxicants into our lungs. The particles are retained in the body along with the toxic chemical hitchhikers which would otherwise be quickly eliminated.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    I wish he would give some indication of the cost. The range is fine for me. The last I heard they were well over $100k to build. If the tanks are like CNG they are very delicate, and need federal inspection every couple years.
  • ""(I'm from Europe). Diesel is so amazingly dirty, it kills millions of people around the world every year. The small particles which come from diesel exhaust are particularly dangerous...""


    And yet for a European surrounded by HALF of your cars powered by diesel, you seem amazingly healthy.

    Your article about particulates was accurate, but omitted important information about *gasoline* particulates which also dangerous. (Or Carbon Monoxide which suffocates.)

    The article also omitted information about Ford's new particulate filters to clean up the exhaust & bring it to SULEV standards.

  • gagricegagrice Pahrump, NevadaPosts: 31,432
    And yet for a European surrounded by HALF of your cars powered by diesel, you seem amazingly healthy.

    I would say a lot more people in the USA and EU die from smoking and second hand smoke than from diesel car exhaust. CNN just announced that as much as 95% of ALL cancer is smoking related.
  • joebeattjoebeatt Posts: 50
    I am still amazingly healthy, but I am noticing more and more cases of lung cancer in my environment. Lately my brother in law was diagnosed with it. He never smoked in his life, but he spent a lot of time on the road.

    Gasoline particles do not compare to diesel particules. Diesels without filters produce more than 1000 times as much fine particles as gasoline cars and they are coated with toxic substances.

    I agree that particle filters MIGHT be a solution. I still would like to see proof that these filters are effective over 100,000 miles. Furthermore it is a mayor problem that these filters simply aren't there. None of the old cars and only a few of the newer cars have them. Does your diesel have a filter?
  • joebeattjoebeatt Posts: 50
    CNN just announced that as much as 95% of ALL cancer is smoking related.

    Of course, smoking is very bad for you, but I can choose not to smoke and to avoid rooms where many people are smoking. I cannot choose to avoid diesels.

    I wish it was true that 95% of all cancer is smoking related. Weren't they talking about lung cancer only? Indeed, in the past most lung cancers were smoke related. My brother in law is an example of a person who never smoked and still got lung cancer. According to his physician these cases are on the rise, as are diesel cars.

    By the way, diesel doesn't only cause lung cancer:
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    My question is with all this science condemning diesel use, why is it on the rise in the EU? It would seem that hybrids would be embraced there. From all I can tell hybrids are not in demand.

    I questioned the CNN source that said 95% of ALL cancers are smoking and second hand smoke related. I will do more research as that seems odd.
  • joebeattjoebeatt Posts: 50
    Diesel became popular in Europe because gas is far more expensive here, so the better MPG is more of an argument here than it is in the USA. Still till 10 years ago diesel couldn't compete with gasoline because diesel engines were too heavy and too slow. This has been solved with the modern turbo diesels. That's why diesels are on the rise lately.

    However, till a few years ago, nobody realized how dangerous the fine diesel particles are. Lately many studies have show the horrible negative effects, but now there is not turning back. Too much money has been invested in diesel and politicians don't like to impose rules that will hurt their own industry. Luckily it seems that a lot can be done with filters. The problem is that filters (and low sulfur fuel) need to be pushed by the public and/or the government. This takes (too much) time, however.

    Hybrids are also becoming popular here in Europe. The new Prius was voted European car of the year 2005. I think hybrids could be the future, also in Europe, but it will depend on how fast the "diesel maffia" can bring a reliable filter technology to the market. If they can, Europe might stay with diesel. If they can't diesel will loose, because more and more people are concerned about the negative health effects.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    Hybrids are also becoming popular here in Europe. The new Prius was voted European car of the year 2005.

    Do people really drive fast over there like you hear about? If so that would negate any mileage gain you would get with the Hybrids. I would be surprised if the Prius would go 100 mph for any real distance. That is another plus for the modern diesel cars that shine at higher speeds.
  • joebeattjoebeatt Posts: 50
    In most European countries there are speed limits of 120 or 130 km/h (75 to 80 mph). In practice most people do obey these limits as the fines can be quite heavy. Furthermore many European highways are congested, so real speeds are lower.

    The only exception is Germany where there is no general speed limit on the highways. However, many times you will encounter road signs that limit speed on certain stretches. And then again, the intensity of the traffic often doesn't allow you to go that fast.

    I agree that hybrid cars do not shine at high speeds. The Prius will not even be able to do more than 100 mph for a long time, especially if the highway is going up and down a little. But then again in practice 99% of the Europeans will never be able to practice these speeds for any period of time. So I think that even in Europe the hybrid approach is attractive.

    Yes, modern diesels can reach very high speeds. But that doesn't take away the fine particle problem. It is this problem that makes me a little bit of a "crusader" against diesels. It's only since a few years that fine particles show up in the public debate and many people still are not even aware of it. We all should be, it's a real problem.

    I assure you that, once you know about it, you will read about it everywhere. The diesel lobby sticks their head in the sand. We shouldn't, as it seems possible to solve the problem with filters. These filters should be perfected a.s.a.p. and it should not be allowed to sell a new diesel (any new diesel, also lorries, etc.) without an effective filter.
  • larsblarsb Posts: 8,204
    quote Gagrice-"Do people really drive fast over there like you hear about?"-end quote

    In Europe, mostly smaller countries, with the population well packed, they have smaller streets, fewer huge highways...MANY Europeans do most of their driving on small city streets or city streets of some kind.

    Most long distance travel is done by train. You rarely have families of seven loading up the ESSUVEE and hitting the road for a 3,000 mile trek.

    The Prius is NOT the best car for the AutoBahn, so if you commute on that road every day, don't buy a Prius.

    But if you are in the VAST MAJORITY of European cities you use a smaller car for commuting, and Prius will SHINE for you !! PERFECT FOR YOU !! Cleaner too !!
  • mirthmirth Posts: 1,212
    True. The little smart cars would have no place on the Autobahn, yet I saw tons of them in Paris.
This discussion has been closed.