• Nov 11th 2007 at 3:24PM
  • 22


In the video above, Jeremy Clarkson, host of Top Gear, says the Porsche 911 Turbo cleans the air in polluted cities like LA. While, I have seen concept cars that can clean the air, I seriously doubt any existing car, especially the Porsche 911 Turbo, emits exhaust that is cleaner than air, even air in the most polluted cities. Here is exactly what Clarkson says:

When you drive this car through a really polluted city; Los Angeles, Calcutta, Harrogate(?), something like that; the gas coming out of the exhaust pipe is less toxic than the air going into the engine. And I am not joking, that's true. This then is like a small, efficient, easy to use vacuum cleaner. They should have called it the Porsche Dyson.


So, here's the question for a Sunday afternoon. What do you think? Is he wrong or does he have a definition of toxic that I don't understand?

[Source: YouTube]


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    • 1 Second Ago
  • 22 Comments
      • 7 Years Ago
      Well, I know an easy way to settle it. Let's just hook up the tailpipe to a facemask, and let Jeremy Clarkson wear it for oh, say 20 to 30 miutes.

      If he is still alive, then yes, I will agree with his stupid statement. If he isn't, well then we have one less idiot in the world.
      • 7 Years Ago
      I could certainly see that for some emissions the conversion efficiency of the automotive catalysts could be so high as to remove existing contaminants.

      I know that there have been vehicles in the past with catalytic-coatings on their radiators to convert ground-level ozone, for example.

      Clarkson can be an ignorant blowhard at times, but he may not be completely wrong in this instance.
      • 7 Years Ago
      I can't wait until gas is $10+ a gallon. That will wipe the smug right off Clarkson and every other I.C.E.-lover's face.

      • 7 Years Ago
      Auto manufacturers have been intermittently making this claim since at least 1976 (Volvo, when they introduced the first production vehicle with an oxygen sensor). But even if one ignores the production of greenhouse gases, and focuses only on toxics, it's not true. Sorry.
      • 7 Years Ago
      Oh, and also the Tesla accelerates faster, and if it had a tailpipe, I would volunteer to try the tailpipe facemask test with it.
      • 7 Years Ago
      Phoenexius, That's pretty cool :D
      • 7 Years Ago
      Agree with cassio. some ppl are way of target.
      If you knew Clarkson or had a sense of humour you'd have a clue. Stop trawling the Net for quotes on emmissions and develop a personality
      • 7 Years Ago
      Considering that Clarkson has pistons for lungs and oil in his veins, the air coming out of the Porsche or any other vehicle probably IS cleaner ... to him.
      • 7 Years Ago
      obviously you guys don't know clarkson, don't know sarcasm, don't know british humor, and (some of you) don't know there's a big, and much nicer world, outside america
      • 7 Years Ago
      This man obviously knows very little.

      The Porsche 911 is given a 6 rating for emmisions from fueleconomy.gov

      Cars, like the Honda Civic NGV, are SUPPOSED to be so clean that the stuff coming out is cleaner than the stuff coming in. (I kind of doubt how true that is.) Anywho, the Civic NGV is given a 9 rating on emmisions. Therefore, there is no way on earth that what he is saying can be true.
      • 7 Years Ago
      The primary things that distinguish the emissions tier for light-duty vehicles are how fast the catalyst lights-off on a cold engine and the evaporative emissions. Once the three-way catalyst is lit-off on a newer model vehicle, the tailpipe emissions are very, very low. It is very possible that the tailpipe emissions of "toxic" compounds (other than CO2) are lower than the intake air. You could not live long breathing tailpipe gasses due to CO2.
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